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Terms of Service

Conditions of use for the BellyBuddy app · Last updated: 28 August 2026

1. Scope and Provider

  1. These Terms of Service (“Terms”) govern the use of the mobile application “BellyBuddy” (hereinafter the “App”) for iOS and Android and of the associated services.
  2. The provider of the App and your contracting party is:
    Marc Lüerssen
    Eschenstr. 9
    28203 Bremen
    Germany
    Email: support@bellybuddy.com
    Phone: +49 421 40895722
    VAT ID: DE232614703
    (hereinafter the “Provider”, “we” or “us”).
  3. The App is intended exclusively for consumers within the meaning of Section 13 of the German Civil Code (BGB). Any deviating terms of the user shall not apply.
  4. The contract language is German. This English version is a translation provided for information only; the German version of these Terms is the legally binding one and prevails in case of doubt.

2. Description of Services

  1. BellyBuddy is a meal and symptom diary. The App offers in particular:
    • logging of meals by photo, voice note or text;
    • AI-assisted recognition of the dish and estimation of 13 nutritional values (including calories, macronutrients, fibre, fluids, iron, caffeine, gluten, histamine, natural and free sugar);
    • logging of symptoms in the same timeline as the meals;
    • charts that display symptoms and nutritional values side by side over time;
    • nutrition goals based on an optional body profile;
    • favourites for quick entries;
    • an AI assistant for questions about your own entries;
    • PDF reports for sharing, e.g. with doctors or nutrition professionals;
    • a user interface in German, English, French, Spanish and Italian.
  2. Nutritional values, dish recognition and the AI assistant’s answers are estimates produced by an artificial intelligence. They are not equivalent to measured values and may deviate from the actual values. You review and confirm every entry yourself.
  3. The App displays data; it does not evaluate it medically. In particular, the App makes no statements about causes of, or correlations between, meals and symptoms. Any conclusions are drawn by you.
  4. BellyBuddy is not a medical device (see Section 7).
  5. Use of the App requires a compatible device, an internet connection and a user account. You bear the costs of the internet connection.

3. Registration and User Account

  1. A user account is required to use the App. Registration is completed with an email address and a password; the email address is verified by means of a confirmation code.
  2. Registration is permitted only to natural persons who are of legal age (18 years or older). By registering, you confirm that you have reached the age of 18.
  3. You provide truthful information when registering and keep it up to date.
  4. Only one user account per person is permitted. The account is not transferable.
  5. You keep your login credentials confidential and protect them from access by third parties. If you suspect misuse, you notify us without delay at support@bellybuddy.com.
  6. Upon completion of registration, a contract for the use of the App is concluded under these Terms.

4. Free Trial

  1. After registration, you may try the App free of charge for 7 days with its full range of features.
  2. No payment details are collected for the trial. It ends automatically upon expiry of the 7 days and does not automatically convert into a paid subscription.
  3. After the trial has ended, you may continue to access your account and delete it; logging and analysing new data requires a subscription pursuant to Section 5.
  4. The trial is granted only once per person.

5. Subscription

  1. Use of the App beyond the trial requires a paid subscription. The price depends on the country of your store account and is displayed in the app store, including statutory VAT, before you subscribe.
  2. The subscription is taken out through the app store of your device (Apple App Store or Google Play). Payment, invoicing, renewal, cancellation and refunds are handled by the respective store operator under its terms. We use the technical service provider RevenueCat for this purpose; RevenueCat does not become your contracting party.
  3. The subscription has a term of one month and renews automatically for a further month each time unless it is cancelled in the subscription settings of the app store no later than 24 hours before the end of the current period. The amount is charged to the payment method stored in the store.
  4. You may cancel at any time in the subscription settings of the Apple App Store or Google Play. After cancellation, the subscription remains active until the end of the period already paid for.
  5. Price changes apply only to subsequent periods. We or the store operator will inform you of a price change in good time before it takes effect; you may cancel the subscription beforehand. Where the store operator requires your express consent to the price change, the subscription will not continue at the new price without that consent.
  6. A refund for periods already paid for but not used is available only where provided for by law or by the terms of the store operator.

6. Right of Withdrawal

Consumers have the following statutory right of withdrawal. If the subscription is taken out through an app store, you may also declare your withdrawal to the store operator; the store operator’s refund terms apply in addition.

Instructions on Withdrawal

Right of withdrawal
You have the right to withdraw from this contract within 14 days without giving any reason. The withdrawal period will expire after 14 days from the day of the conclusion of the contract.

To exercise the right of withdrawal, you must inform us (Marc Lüerssen, Eschenstr. 9, 28203 Bremen, Germany, phone +49 421 40895722, email support@bellybuddy.com) of your decision to withdraw from this contract by an unequivocal statement (e.g. a letter sent by post or an email). You may use the attached model withdrawal form, but it is not obligatory.

To meet the withdrawal deadline, it is sufficient for you to send your communication concerning your exercise of the right of withdrawal before the withdrawal period has expired.

Effects of withdrawal
If you withdraw from this contract, we shall reimburse to you all payments received from you without undue delay and in any event not later than 14 days from the day on which we are informed about your decision to withdraw from this contract. We will carry out such reimbursement using the same means of payment as you used for the initial transaction, unless you have expressly agreed otherwise; in any event, you will not incur any fees as a result of such reimbursement.

If you requested to begin the performance of services during the withdrawal period, you shall pay us an amount which is in proportion to what has been provided until you have communicated to us your withdrawal from this contract, in comparison with the full coverage of the contract.

Model Withdrawal Form

(Complete and return this form only if you wish to withdraw from the contract.)

  • To: Marc Lüerssen, Eschenstr. 9, 28203 Bremen, Germany, email: support@bellybuddy.com
  • I/We (*) hereby give notice that I/We (*) withdraw from my/our (*) contract for the provision of the following service: BellyBuddy subscription
  • Ordered on (*) / received on (*): ______
  • Name of consumer(s): ______
  • Address of consumer(s): ______
  • Signature of consumer(s) (only if this form is notified on paper): ______
  • Date: ______

(*) Delete as appropriate.

7. Health Notice – No Medical Advice

  1. BellyBuddy uses AI to estimate nutritional values. These estimates are not 100% accurate and may vary from actual values.
  2. This app is not a substitute for professional medical, dietary, or nutritional advice. If you have health-related questions or complaints, consult a doctor or another qualified healthcare professional.
  3. This app is not intended to diagnose, treat, cure, or prevent any disease. It is not a medical device within the meaning of Regulation (EU) 2017/745.
  4. BellyBuddy is intended for general wellness and informational purposes only.
  5. This app is not intended for managing eating disorders or serious medical conditions. If you have allergies, never make decisions solely on the basis of the information in the App; allergies can trigger life-threatening reactions.
  6. The AI assistant’s answers do not constitute medical advice.

8. Rights of Use and Obligations of the User

  1. For the term of the contract, you are granted a non-exclusive, non-transferable, non-sublicensable right to use the App on your own devices for private purposes. The terms of use of the respective app store apply in addition.
  2. You may not decompile, reverse engineer, modify, reproduce or make the App available to third parties, except where mandatory law permits this. Automated access to the Provider’s services outside the App is not permitted.
  3. You may not use the App in a manner that impairs the services, infringes the rights of third parties or violates applicable law.
  4. Content you enter (e.g. photos, voice notes, texts, symptom details) remains your property. You grant us the right to store and process this content to the extent necessary to provide the services (in particular for AI analysis, display and export). You warrant that you hold the necessary rights to this content.
  5. You are responsible for securing your own device and for keeping its operating system up to date.

9. Availability, Updates and Changes to the App

  1. We strive for high availability of the services but do not owe uninterrupted availability. Maintenance work, disruptions at third parties (e.g. app stores, hosting, AI providers) or force majeure may lead to temporary restrictions.
  2. We provide the updates necessary to keep the App in conformity with the contract (Section 327f BGB). Beyond that, we may develop, modify or discontinue features to the extent this is reasonable for you. Using an update may require you to install it.
  3. We will announce a complete discontinuation of the App at least four weeks in advance. Subscription periods already paid for but not used will be refunded; the refund is processed through the respective app store.

10. Data Protection

  1. The App processes personal data, including health data within the meaning of Art. 9 GDPR (e.g. symptoms, allergies, intolerances, body profile). Details of the nature, scope and purpose of the processing, the service providers used and your rights are set out in our Privacy Policy.
  2. Health data is processed on the basis of your explicit consent, which you may revoke at any time with effect for the future, in particular by deleting your account.

11. Liability

  1. We are liable without limitation for intent and gross negligence and for damage resulting from injury to life, body or health.
  2. In the event of a slightly negligent breach of a material contractual obligation (cardinal obligation), i.e. an obligation whose fulfilment is essential to the proper performance of the contract and on whose observance you may regularly rely, our liability is limited to the foreseeable damage typical of this type of contract.
  3. In all other respects, liability for slight negligence is excluded. Liability under the German Product Liability Act (Produkthaftungsgesetz) and under any guarantee we have given remains unaffected.
  4. Nutritional value estimates, dish recognition and the AI assistant’s answers are estimates (Section 2 (2)). Within the limits of the preceding paragraphs, we accept no liability for decisions you make on this basis, in particular dietary or health decisions.
  5. You share responsibility for backing up your data regularly, for example by means of the PDF export. The foregoing provisions also apply to the liability of our vicarious agents.

12. Term, Termination and Account Deletion

  1. The contract of use runs for an indefinite period. You may terminate it at any time by deleting your account in the App under “Settings → Account”.
  2. Upon account deletion, the account and all associated data (meals, symptoms, photos, profile, chat histories) are irrevocably deleted unless statutory retention obligations require otherwise.
  3. Deleting your account does not automatically end a current store subscription. Cancel the subscription separately in the subscription settings of the Apple App Store or Google Play to avoid further charges.
  4. We may terminate the contract of use with four weeks’ notice to the end of a subscription period. The right to terminate for good cause, in particular in the event of serious or repeated breaches of Section 8, remains unaffected.

13. Changes to these Terms

  1. We may amend these Terms where this is necessary for valid reasons, in particular in the event of changes in the law or case law, technical changes or extensions of the services, and provided you are not unreasonably disadvantaged as a result.
  2. We will notify you of amendments at least four weeks before they take effect, by email or within the App. If you do not object within this period, the amended Terms are deemed accepted; we will point out this consequence separately in the notification. If you object, either party may terminate the contract as of the date on which the amendments take effect.
  3. Price changes are governed exclusively by Section 5 (5).

14. Final Provisions

  1. The law of the Federal Republic of Germany applies, to the exclusion of the UN Convention on Contracts for the International Sale of Goods (CISG). If you have your habitual residence in another Member State of the European Union, the mandatory consumer protection provisions of that state remain unaffected.
  2. We are neither obliged nor willing to participate in dispute resolution proceedings before a consumer arbitration board within the meaning of the German Act on Alternative Dispute Resolution in Consumer Matters (VSBG).
  3. Should individual provisions of these Terms be invalid, the validity of the remaining provisions remains unaffected. The invalid provision shall be replaced by the statutory provisions.