These General Terms and Conditions (hereinafter "GTC") of Fastic GmbH, Pappelallee 78/79, 10437 Berlin, Germany (hereinafter "Provider" or "Fastic"), govern the use of the services provided via the website www.fastic.com (hereinafter "Website" or "Fastic Website") or the mobile application (hereinafter "App" or "Fastic App"). The GTC apply regardless of whether the use of Fastic services is free or paid.
These GTC form the basis of contracts concluded with us based on our offers on the website or in the app.
Fastic offers its users a program (hereinafter also "Services") that covers topics such as healthy weight gain and loss, intermittent fasting, muscle building, and healthy nutrition. These services are provided via the Fastic App and the website www.fastic.com and offer users various opportunities to become familiar with these topics.
The terms "Consumer" and "Entrepreneur" are used in accordance with the legal definitions in §§ 13, 14 BGB. A consumer is a natural person who enters into a legal transaction for purposes that cannot be attributed primarily to their commercial or independent professional activity. An "Entrepreneur" is any natural or legal person or legally competent partnership that acts in the exercise of its commercial or independent professional activity when concluding a legal transaction.
Customers within the meaning of these terms and conditions are both consumers and entrepreneurs.
We therefore only sell to adults who are fully legally competent natural persons or legal entities. The data required for the order, such as name, address, etc., must be provided completely and truthfully.
"Distribution platform" refers to the online stores (stores) of platform operators such as Google ("Google Play") and Apple ("App Store"), through which users can select and download the Fastic App or make in-app purchases.
Fastic services can be used both free and paid, especially through the Fastic App. The mere installation of the app via a distribution platform or the use of the website is always free. Additionally, there is the option to book paid services (e.g., Fastic Plus).
The Fastic App can be installed and used on all platforms and devices supported by Fastic, such as mobile phones, smartwatches, tablets, and other mobile devices.
By using the website or installing the app, the user agrees to these GTC. If the app is downloaded via a third-party distribution platform, the terms and conditions of use of the respective platform also apply. In the event of any conflicts, these GTC take precedence.
The user confirms that all information provided is truthful, up-to-date, and complete. The user is obliged to regularly update their personal information.
The user is responsible for protecting their account from unauthorized access and misuse. Any suspicions or violations must be reported to the provider immediately. Refunds for unauthorized payments will only be granted after a successful report of misuse.
The provider has the right to close a user's account if abusive behavior is detected.
The use of the app is only permitted for persons aged 18 and over. Minors may only use the app with the consent of a parent or guardian. If Fastic becomes aware that personal data of minors has been collected without this consent, Fastic will take all necessary steps to delete such data immediately.
Fastic is not a medical organization, and the content and recommendations provided through Fastic services do not constitute medical advice. The use of Fastic services is at the user's own risk. In particular, users who are already undergoing medical treatment or taking prescription medication are advised to consult a doctor before using Fastic services. This also applies to users with conditions such as diabetes, cardiovascular problems, lung or respiratory diseases (including asthma), neuromuscular disorders, or those recovering from surgery. Pregnant and breastfeeding women are also advised to seek medical advice before using Fastic services.
The recommendations provided by the provider do not replace medical examinations or treatments. Fastic recommends that users seek medical supervision while using the services and attend regular check-ups. The provider assumes no liability for the actions or decisions of users.
By agreeing to these GTC, the user confirms that they are solely responsible for their health.
The provider recommends that users maintain their weight within the healthy weight guidelines set by the World Health Organization (WHO), which correspond to a Body Mass Index (BMI) between 18.5 and 25. The BMI can be calculated using the following formula: body weight (in kg) divided by height (in m) squared.
Fastic encourages users to maintain a healthy weight in accordance with WHO guidelines. A healthy Body Mass Index (BMI) is between 18.5 and 25. The BMI can be calculated using the following formula: body weight (in kg) divided by height (in m) squared.
The exercises and recommendations provided within Fastic services are designed for generally healthy individuals who are physically and mentally resilient. If you feel unwell after using Fastic services, please consult a doctor. Minors may only use the services in consultation with and under the supervision of their parents.
The Fastic App can be used with or without a personalized user account. To create a personalized user account, the user must provide their email address or phone number and set a password. The user may convert an existing anonymous account into a personalized account at any time by linking their email address or phone number to the user account.
Alternatively, a Fastic user account can be created by linking it with the profile of a platform operator, e.g., via “Continue with Apple”, “Google”, or similar options.
If the Fastic services are used free of charge, the usage contract can be terminated by either Fastic or the user with a notice period of 14 days via email to info@fastic.com or to the email address provided by the user. The user also has the option to delete their account independently via the app settings.
Fastic offers subscriptions with various fixed terms, which are tied to a corresponding usage fee. This fee must generally be paid in advance in order to receive unrestricted access to all services (hereinafter “Fastic Plus” or “Plus features”). Alternatively, for certain subscriptions, Fastic may offer installment payments; in this case, the usage fee must be paid in the agreed partial amounts and on the agreed due dates. Access to Fastic Plus is granted subject to timely payment of the respective installment.
If the user wishes to use the Plus features of the Fastic App, they may purchase them via the Fastic Website, unlock them via an “in-app purchase” through a distribution platform, or obtain them by purchasing a prevention course (if offered).
To purchase the Plus features via the Website or the App, the user can view the available subscriptions on the respective product page and complete the purchase. Depending on the design, the purchase may be completed with or without prior registration.
To use the Plus features, a user account must be created. If a subscription was purchased without a prior user account, the Plus features will be available after a user account has been created and the subscription has been assigned to it.
When purchasing a PLUS subscription via a distribution platform, the process is governed by the terms and conditions of the respective platform operator. The purchase contract is concluded in accordance with the provisions of the respective distribution platform, which also regulate whether the contract is concluded between the user and the distribution platform or between the user and the Provider.
Users who purchase a prevention course receive a Fastic Plus subscription free of charge for 12 months. This Fastic Plus subscription is not sold as a regular subscription, but is granted as part of the prevention course. Since the Fastic Plus subscription is not sold as a regular subscription, it ends automatically after 12 months and does not require termination.
Prevention courses may be conducted either by Fastic itself or by a cooperation partner named in the offer. The indicated provider is responsible for the professional implementation, the content, the procedure, and compliance with the requirements of the Central Prevention Certification Body (Zentrale Prüfstelle Prävention, “ZPP”).
The prevention courses offered are certified by the “Zentrale Prüfstelle Prävention”. Reimbursement or participation in the costs of the prevention courses by a statutory health insurance fund pursuant to Section 20(5) SGB V is generally possible. However, actual reimbursement depends on further requirements over which Fastic has no influence (e.g., full participation and completion of the course, not exhausting the maximum annual reimbursement amount through other courses). Fastic also has no influence on the application for the subsidy, the processing procedure, the assessment by the health insurance fund, or the payout process. For private insurance, reimbursement depends on the respective tariff conditions. The user must contact their health insurance fund directly for this purpose. Fastic recommends that users obtain information from their health insurance fund in advance about the prerequisites and the reimbursement process.
Users who participate in and successfully complete the Fastic Rewards Program receive a Fastic Plus subscription free of charge for 12 months. This Fastic Plus subscription is not sold as a regular subscription but is granted as part of the Fastic Rewards Program. The Fastic Plus subscription ends automatically after 12 months and is not automatically renewed. Participation in the Fastic Rewards Program is additionally governed by the participation terms of the Fastic Rewards Program.
Our promotional offers are non-binding unless they become part of a contractual agreement. Before submitting your order, you have the opportunity to review and correct the information you have entered. By submitting your order, you make a binding contract declaration. Immediately after receiving your order, you will receive an automatically sent order confirmation via email.
A binding contract is formed when we accept your order. This acceptance can occur in the following ways:
Fastic may offer time-limited trial subscriptions that allow users to test the Plus features free of charge before concluding a paid subscription. The trial subscription begins upon conclusion of the contract and is free of charge during the trial period. The duration of the trial period is communicated to the user in the respective offer. During the trial period, no fee is due; however, Fastic may require the user to provide payment details when concluding the trial subscription. If the trial subscription is converted into a paid subscription after the end of the trial period, this will occur only after prior information and the user’s express consent. Fastic reserves the right to change the scope of services of the trial subscription or to no longer offer trial subscriptions in the future.
Fastic may offer paid subscriptions in which no fee is charged for a limited initial period (e.g., “first month free”). In these cases, the paid subscription contract is already concluded upon conclusion of the contract; the free period does not constitute a trial phase. The statutory withdrawal period remains unaffected and is 14 days from conclusion of the contract, irrespective of the duration of any free period. After the free period ends, the usage fee stated in the offer becomes due.
The paid subscription runs at least for the term selected by the user, plus any trial period determined by Fastic.
The user has the right to terminate the PLUS membership ordinarily at the end of the initial term. Ordinary termination of the PLUS membership only becomes effective at the end of the agreed initial term (and is not refundable as such). Despite termination, any payment obligations (either from the PLUS membership or in relation to the prevention or rewards program) remain in place.
If the customer concluded their PLUS membership via a third-party provider, the termination of the contractual relationship is governed by the rules prescribed by the third-party provider, which the customer accepts via the third party’s terms of use and over which Fastic has no influence. If the customer wishes to end their PLUS membership purchased in-app, it is necessary to do so via the customer’s account with the third-party provider by logging in there and following the third party’s instructions for ending it. Details on ending a PLUS membership concluded via a third-party provider can be found in the terms of the respective provider as well as in the settings of the third-party provider’s user account (e.g., Apple or Google). Ordinary termination of the paid membership via third parties does not automatically terminate the basic membership either. For this, Section 6 must also be followed.
For Fastic Plus subscriptions (access to the “Plus features”) concluded directly with Fastic, the term is determined by the contract duration selected in the ordering process. The user may terminate the subscription by the end of the respective term in accordance with the termination conditions applicable at the time of contract conclusion.
If no timely termination is made, the subscription may be extended for an indefinite period in accordance with the conditions shown in the ordering process. After an extension for an indefinite period, the subscription may be terminated by either party with the applicable notice period. Any refunds are governed by the applicable statutory provisions and the conditions applicable to the respective contractual relationship.
If the PLUS membership is concluded via a third-party provider, the conditions of any automatic renewal result from the respective offer, the rules in the third party’s account, and the order confirmation received by the customer upon contract conclusion.
Termination may be carried out via the App or by email to info@fastic.com. A termination option is also available on the Website. In the event of termination by the Provider, the termination will be sent to the email address stored by the user. If the subscription was concluded via a distribution platform, termination is carried out in accordance with the processes described in the respective app stores.
The right to extraordinary termination for good cause remains unaffected. Good cause for Fastic exists in particular if the user violates applicable law or essential contractual obligations. The provisions in Section 10 also remain unaffected.
For orders via our Website and/or in the Fastic App, the prices stated in the offer at the time of the order apply. The prices stated are total prices, i.e., they include the applicable German statutory VAT and other price components.
Depending on the chosen distribution channel, payment may be made in particular by SEPA direct debit, credit card, PayPal, Google Pay, Apple Pay, other online payment services, or as an in-app purchase via the respective distribution platform. For in-app purchases, the payment terms of the respective platform operator apply additionally.
If the user chooses SEPA direct debit (if offered) as the payment method, they will be informed before each debit of the due amount and the time of the debit (pre-notification). Fastic is entitled to shorten the statutory pre-notification period. In this case, the pre-notification will be provided at the latest with the order confirmation or before the respective debit.
The user is obliged to bear all costs arising from a payment not being collected due to insufficient funds, incorrect details, or withdrawal of a payment authorization. If due fees are not paid despite being due or are charged back, Fastic is entitled to block access to individual or all services until full payment has been received.
If the user fails to meet their payment obligations, the following rules apply:
8.5.1 For one-time advance payment (e.g., annual subscription): If the agreed total amount is not paid by the due date, the user is in default with the entire fee. Fastic is entitled to declare the full amount immediately due and to block access to the Plus features until full payment has been received. Further statutory claims remain unaffected.
8.5.2 For periodic payment (e.g., monthly, quarterly, semi-annually): If the user is in default with one or more due payments, Fastic is entitled to temporarily block access to the Plus features. If the user is more than 28 days in default with one or more due payments, all outstanding payment claims up to the next possible termination date—regardless of the chosen payment method—become immediately due (acceleration). Fastic requests payment after default occurs and informs the user of the date on which acceleration will occur if payment is not made. Further statutory claims due to default remain unaffected.
When purchasing a prevention course, the user is obliged to make payment within 28 days. Payment may be made by bank transfer, SEPA direct debit, or via an online payment service. If payment is not made in time, Fastic reserves the right to refuse access to the Plus features and the issuance of the participation certificate until full payment has been received, and to initiate further legal steps to enforce the claim.
Participation in the Fastic Rewards Program is governed by the separate and additional participation terms and conditions of the Fastic Rewards Program.
The provider reserves the right to change the usage fees for subscription options. However, price adjustments will only take effect after the current subscription term ends or when the next subscription renewal payment is due. In the event of upcoming price increases, the provider will inform the user at least 30 days before the planned fee adjustment. If the notification is provided less than 30 days in advance, the price adjustment will only take effect at the following payment date.
From time to time, Fastic may offer a referral program (hereinafter the “Program”) under which users may receive rewards for referring new users. Unless otherwise stated, eligible participants are persons aged 18 or older with a valid Fastic user account. Fastic may exclude certain groups of persons (e.g., Fastic employees and their relatives) from participation.
If a program is offered, the eligible user typically receives a personal referral link or code. A referral is considered successful if the requirements stated in the program information are met (e.g., first-time registration by the referred person and a qualifying purchase that is not cancelled or refunded). If a trial period is provided, a referral may only be considered successful after conversion into a paid subscription, to the extent specified in the program information.
The type, scope, and requirements of rewards (e.g., free months, discounts, or payouts) may vary depending on campaign, region, and time period and will be displayed as part of the respective program in the App or on the Website. If payouts are offered, additional information and requirements may be necessary (e.g., address or payment data, minimum amounts, processing times), which are also stated in the program information.
Fastic is entitled to exclude participants from participation in the event of suspected misuse or other violations of the program terms and conditions, and to reject, withhold, or cancel rewards. Misuse includes in particular the use of fake accounts, self-referrals, fraudulent activities, manipulations, or other circumventions of the program logic.
Fastic may change, suspend, or discontinue a program at any time. Properly earned rewards remain unaffected, provided they were not obtained through a breach of the program terms and conditions.
Fastic is entitled to store phone numbers provided by the user during registration or use of the service and to use them for the performance of the contractual relationship. This includes, in particular, the use of the phone number for transactional messages (e.g., confirmations, security-related notices, payment information, and contract changes). Such messages may be sent via SMS, WhatsApp, or comparable services.
In addition, Fastic may use the phone number for marketing communications (e.g., information on new features, offers, or promotions), provided that the user has given prior explicit consent or another legal basis permits such use.
The user has the right to object to the use of their phone number for marketing purposes at any time (“opt-out”). The opt-out can be exercised at any time, free of charge, and in text form via the unsubscribe options indicated in the communications, in the settings of the Fastic app, or by notifying customer support. In the event of an opt-out, the phone number will continue to be used exclusively for transactional purposes.
Fastic will store phone numbers only for as long as necessary to perform the contractual relationship or to comply with statutory retention obligations. Disclosure to third parties will only take place where required by law or where service providers act on behalf of Fastic.
The provider reserves the right to change, temporarily interrupt, or permanently discontinue the Fastic services at any time, including free services and time-limited subscriptions.
The user has the right to terminate their subscription extraordinarily if a change, interruption, or discontinuation of the services significantly impairs the purpose of the contract. If the user exercises their right of termination, they may be entitled to a prorated refund for the unused portion of their canceled subscription. The provider is only responsible for refunds granted under these terms.
The subscription automatically ends if the provider or the respective distribution platform through which the services are provided completely discontinues the service or business operations.
These GTC also apply to modified services.
If a contract is concluded between the provider and the user, the provider is liable for defects in the app according to statutory provisions, particularly under §§ 434 ff. BGB. In the event of performance defects, the customer has a statutory warranty right.
The provider endeavors to ensure a continuously complete and error-free availability of the Fastic App but does not guarantee or warrant its uninterrupted availability.
The user's claims for damages are excluded. Exceptions include claims for damages by the user due to injury to life, body, or health, or due to the violation of essential contractual obligations (cardinal obligations), as well as claims for other damages based on intentional or grossly negligent breaches of duty by the provider, its legal representatives, or agents. Essential contractual obligations are those whose fulfillment is necessary to achieve the purpose of the contract.
In the event of a breach of essential contractual obligations, the provider is only liable for foreseeable damages typical for the contract, provided that these were caused by simple negligence. This does not apply to claims for damages by the user resulting from injury to life, body, or health.
The liability limitations in paragraphs 1 and 2 also apply in favor of the provider's legal representatives and agents if claims are asserted directly against them.
Below, you will find information about the conditions and consequences of the statutory right of withdrawal for service orders. No contractual rights beyond the statutory provisions are granted. In particular, the statutory right of withdrawal does not apply to business customers.
You have the right to withdraw from this contract within fourteen days without providing any reason. The withdrawal period is fourteen days from the day of contract conclusion. To exercise your right of withdrawal, you must inform us (Fastic GmbH, Pappelallee 78/79, 10437 Berlin, Germany, Email: info@fastic.com, Phone: +49 30 41735147) by means of a clear statement (e.g., a letter sent by post or an email) about your decision to withdraw from this contract. You may use the attached sample withdrawal form for this purpose, but it is not mandatory. To comply with the withdrawal deadline, it is sufficient that you send the notification of exercising the right of withdrawal before the withdrawal period expires.
If you withdraw from this contract, we will refund all payments received from you, including delivery costs (except for additional costs resulting from you selecting a delivery method other than the least expensive standard delivery offered by us), without undue delay and no later than fourteen days from the day we receive notice of your withdrawal from this contract. For this repayment, we will use the same payment method that you used in the original transaction, unless explicitly agreed otherwise with you; in no case will you be charged fees for this repayment.
If you have requested that the services begin during the withdrawal period, you must pay us an appropriate amount corresponding to the proportion of services already provided up to the point at which you informed us of your withdrawal from this contract, relative to the total scope of the services provided for in the contract.
(If you want to withdraw from the contract, please fill out this form and return it.)
— To: Fastic GmbH, Pappelallee 78/79, 10437 Berlin, Germany, info@fastic.com
— I/we () hereby withdraw from the contract concluded by me/us () regarding the purchase of the following goods ()/the provision of the following service ()
— Ordered on ()/received on ()
— Name of the consumer(s)
— Address of the consumer(s)
— Signature of the consumer(s) (only required for notification in paper form)
— Date
(*) Delete as appropriate
We are neither willing nor obligated to participate in a dispute resolution procedure before a consumer arbitration board.
All legal transactions or other legal relationships with us are governed by the laws of the Federal Republic of Germany. The United Nations Convention on Contracts for the International Sale of Goods (CISG) and any other intergovernmental agreements, even after their incorporation into German law, shall not apply. This choice of law does not affect the consumer protection rights granted to customers with habitual residence in an EU country or Switzerland under mandatory provisions of the respective national law.
In business transactions with merchants and legal entities under public law, our registered office shall be the exclusive place of jurisdiction for all disputes arising from these terms and conditions and the individual contracts concluded under their application, including claims involving checks and bills of exchange. In such cases, we are also entitled to take legal action at any other legally permissible place of jurisdiction. Any mandatory exclusive place of jurisdiction remains unaffected by this provision.
If individual provisions of these general terms and conditions are or become invalid, this shall not affect the validity of the remaining provisions. In place of the invalid provisions, the statutory provisions shall apply. The same applies if these general terms and conditions contain an unforeseen gap.
Fastic provides these general terms and conditions in multiple languages. However, only the German-language version shall be legally binding in the event of disputes, misunderstandings, or inconsistencies with translated versions.
Fastic is entitled to engage third parties to provide the agreed services, either in whole or in part. The provider may also transfer its rights and obligations to one or more third parties.
The provider reserves the right to amend these GTC at any time with future effect if objective reasons such as changes in legislation, supreme court rulings, economic developments, technological advancements, or changes in market conditions necessitate such amendments and the user is not unreasonably disadvantaged as a result. Changes to the GTC will be communicated to the user in a timely manner, at least 14 days before they take effect, via an appropriate channel or by email. Each user has the right to object to the new GTC.
Fastic's privacy policy is available at www.fastic.com/en/privacy.
Effective as of January 30, 2026.