Last updated on 21.08.2025
§ 1 General information
1.1 These Terms of Use (hereinafter referred to as "Terms") govern the use of the mobile application "Caona" (referred to as "Caona" or "Caona App"), including all services (or "Services") provided via the Caona App and the Caona website https://www.caona.eu/ ("Caona Services"). The provider of the Caona Services is Caona Health GmbH, Pastor-Lambertz-Str. 23, 41747 Viersen, registered with the Mönchengladbach Local Court under HRB 21624, e-mail: hi@caona.eu (hereinafter "Caona" or "we").
1.2 In addition to these Terms, the Privacy Policy available at https://www.caona.eu/privacy-policy sets out your and our respective rights and obligations under applicable data protection laws, in particular in relation to the processing of your Sensitive Health Data. Information on exercising your right of withdrawal under German law (if applicable) can be found at the end of these Terms under § 12.
1.3 The Caona services are aimed at people with menstrual cycles between the first menstruation and the menopause and support them with knowledge and evaluations of their cycle and hormonal health. The app is intended for use on mobile devices. By documenting physical processes, you gain insight into possible patterns, can promote your well-being and recognize abnormalities. The specific functions of the app are described in § 4.
1.4 You must be at least 18 years old to use Caona's fee-based services (see § 6). Minors can only use the premium functions if a parent or legal guardian has consented to both the use of the app and these terms and conditions. In this case, the responsibility for use by minors lies entirely with the parent or legal guardian. The separate consent to data processing can be found in our privacy policy.
§ 2 Scope of application and changes to the terms and conditions
2.1 By using the Caona services, you agree to the terms and conditions set out here.
2.2 If changes are made that affect essential points - in particular the type, scope or duration of the chargeable services - we will obtain your express consent in advance. However, this does not prevent us from making improvements or adding additional functions.
2.3 We may make adjustments that do not affect essential parts of the contract at any time without separate notification. There are no verbal collateral agreements.
§ 3 Exclusion of liability
3.1 The Caona services do not constitute medical advice. If you have individual questions or health complaints, please always contact qualified medical personnel.
If you use the Caona services, you agree to use the respective service only for the purposes described in these terms and conditions.
3.2 Caona does not replace medical care. Use of the app is at your own risk. Only medical professionals can diagnose illnesses or recommend therapies. If you find that using the app is affecting your health or causing mental stress, please stop using it and seek medical help. We do not give individual medical advice. However, if you would like to comment or provide feedback on the Caona services, you are welcome to contact us personally at hi@caona.eu.
§ 4 General scope of services of Caona, Caona Gold and other Caona Premium functions
4.1 Caona is designed to provide general information about hormone health and related topics. The app collects the data you share with us when you use it, such as data about menstrual cycles, physical activity, health and other data about your body that you wish to track. This data is processed statistically and algorithmically so that possible patterns in your cycle or your health can be identified.
4.2 Caona is a tool for self-observation. This means that the quality and informative value of the analyses depends on the accuracy and completeness of your input.
4.3 The app is designed for use on iOS and Android devices. It is only offered with a personal user account. All data entered is stored exclusively on the secure servers specified in the privacy policy.
4.4 Some basic functions of Caona are accessible free of charge ("Caona" or "Caona Basic"). More extensive content and functions, on the other hand, are subject to a charge (see § 6). You can download the free version from the app stores (Apple App Store or Google Play Store). Within this version, you can also purchase paid subscriptions, for example Caona Gold.
4.5 In order to continue to provide the Caona Services, we reserve the right to display advertising on our Website or App. We also offer the opportunity to support financially or in other ways through the website or app so that you can support our services and our mission.
§ 5 Creating a Caona account
5.1 In order to use Caona, it is necessary to create a personal account. To do so, you must agree to these terms and conditions and accept the processing of your data in accordance with our privacy policy. At least a valid e-mail address and a password are required for registration. You can provide further information voluntarily to personalize your app experience. Your account is activated as soon as you click on the link in the confirmation email.
5.2 Alternatively, you can create an account with your Apple, Google or Facebook login data, in which case your relevant personal data will be automatically transferred to us.
5.3 You are obliged to provide correct and complete information when registering. We recommend that you additionally protect your account using your device's security mechanisms (e.g. PIN, Face ID, fingerprint).
5.4 Caona reserves the right to reject registrations or deactivate accounts if this is necessary to prevent abuse or impairment of our services.
§ 6 Caona Gold and other Caona Premium features (together the "Paid Services")
6.1 In addition to the free basic version, we provide you with extended functions as part of Caona Gold or other premium packages. These offers are linked to a subscription that is concluded for a specific term against payment of a fee.
6.2 You can find an overview of the features of Caona Gold directly in the app. We reserve the right to make changes to the range of functions, as we regularly develop new features, optimize existing ones or occasionally discontinue them. Prices and terms are displayed in the App Store before you complete the purchase.
6.3 The purchase of paid services takes place exclusively via third-party platforms, namely the Apple App Store or the Google Play Store. With the purchase, you may enter into a contractual relationship with the respective store operator in addition to the contract with us. In this case, their terms and conditions apply, in particular with regard to termination and revocation.
6.4 Subscriptions are generally for a fixed term. At the end of the agreed initial term, your contract is automatically renewed unless you cancel in good time or deactivate the automatic renewal. In the case of automatic renewal for an indefinite period, you can terminate your subscription with at least 24 hours' notice to the end of the current billing month.
6.5 If a payment due cannot be successfully collected, we reserve the right to block access to premium features until payment has been made.
6.6 You are obliged to always provide current and correct payment information when making purchases and to update this information if necessary. Any taxes or fees incurred in connection with the purchase of the Services shall be borne by you.
By agreeing to these Terms, you acknowledge and agree that you are financially responsible for all paid services purchased with your account.
§ 7 Your rights and obligations as a user:in
7.1 You may not pass on your access data to third parties or otherwise allow them to access your account. It is also not permitted to circumvent technical protection mechanisms for premium functions. Copyright notices or trademark notices of Caona or third parties may not be removed or falsified. You may not transfer rights or obligations under these terms and conditions to others without our consent.
7.2 When using the app, you must also observe all obligations arising from your contracts with third parties, for example with your internet provider or the respective app store.
7.3 To ensure that you can use the app smoothly, you should regularly install updates to your operating system and the Caona app. Some functions require certain settings. The app can also download and install updates automatically in order to implement technical improvements and enhancements. By using the app, you agree to this.
7.4 You may only offset counterclaims against us if they have been legally established or we have recognized them. You are only entitled to a right of retention if it arises from the same contractual relationship.
§ 8 Copyright
8.1 All content and functions provided via the Caona app or our website are protected by copyright. Any reproduction, distribution or commercial use requires our express written permission.
8.2 By using our services, you do not acquire any rights to software or content other than the simple, revocable right of use under these terms and conditions.
8.3 You are granted a non-exclusive and non-transferable right to use the app for personal use. Editing, decompiling or modifying the software is only permitted to the extent permitted by law. Rental or other transfer of the app is prohibited.
8.4 Commercial use or redistribution of the app or individual content is expressly prohibited.
8.5 We may process anonymous data from the use of the app in order to improve our services and support scientific research. Personal data is processed in accordance with our privacy policy.
§ 9 Liability
9.1 We endeavor to provide all content of the app carefully and to the best of our knowledge. However, we cannot guarantee that it is complete, correct or up-to-date. You alone are responsible for content that you enter in the app yourself. We only accept liability for the loss of or damage to this data insofar as this is required by law.
9.2 Use of the app is always at your own risk. We do not guarantee that certain goals will be achieved, such as the reliable prediction of cycle events.
9.3 General recommendations provided by the app are not individually tailored to your health situation. If you are unsure whether this information is suitable for you, please consult a healthcare professional.
9.4 Our liability is limited to cases in which damages are caused by:
(a) intentional or grossly negligent behavior by us or our vicarious agents,
(b) injury to life, body or health due to our breach of duty,
(c) mandatory statutory liability, for example under product liability law, or due to a guarantee assumed,
(d) the breach of essential contractual obligations (cardinal obligations).
9.5 In cases (a)-(c) we shall be liable without limitation. In all other cases, liability shall be limited to foreseeable damage typical of the contract.
9.6 Any further liability is excluded. These limitations also apply to our employees and agents.
§ 10 Contract term, termination, refunds
10.1 For the free version of the app, you can terminate the contract at any time by deleting your account via the app or removing the app from your device. We may also terminate the contractual relationship if this is necessary, for example in the event of legal violations.
10.2 Subscriptions for fee-based services run for the initial term displayed in the App Store. They are automatically renewed if they are not canceled. In the case of an indefinite extension, you can cancel the subscription with 24 hours' notice to the end of the billing period.
10.3 Subscriptions taken out via app stores must also be canceled there. In this case, the conditions of the respective app store apply.
10.4 The right to extraordinary termination for good cause remains unaffected. Such a reason exists in particular if it is unreasonable to continue the contract until the end of the regular notice period.
§ 11 Other provisions
11.1 We strive to ensure that the app is available as uninterruptedly as possible, but cannot guarantee this technically. We reserve the right to adapt or discontinue content or functions at any time.
11.2 We are entitled to transfer the rights and obligations arising from a contract to a third party. If we intend to transfer the rights and obligations arising from these terms and conditions, we will inform you of the transfer in writing. You are then entitled to terminate the contract. Notice of termination must be given in writing and must reach us within 14 days of receipt of the transfer notification.
11.3 German law shall apply to the exclusion of the UN Convention on Contracts for the International Sale of Goods.
11.4 As far as permissible, the place of jurisdiction for disputes is the registered office of Caona Health GmbH in Viersen. Notwithstanding the foregoing, we are also entitled to sue you at your place of residence in accordance with these terms and conditions.
11.5 You can contact the European Online Dispute Resolution Platform for complaints. We are neither obliged nor willing to participate in dispute resolution proceedings before a consumer arbitration board.
11.6 Should individual provisions of these terms and conditions be or become invalid, the validity of the remaining provisions shall remain unaffected. The invalid provision shall be replaced by a provision that comes closest to the economic purpose of the invalid provision.
11.7 Caona is used by people with cycles all over the world who access the app in a variety of different languages. However, the original German version, which you can find on our website, is always authoritative.
§ 12 How can I exercise my right of withdrawal?
As a consumer within the meaning of § 13 BGB, you have the right to withdraw from the contract within 14 days of conclusion of the contract without giving reasons.
If you have taken out a subscription via the Apple App Store or Google Play Store, you must submit the revocation using the procedures provided there.
Cancellation policy
Right of withdrawal
To meet the deadline, it is sufficient to send the declaration in good time.
Consequences of revocation
We will refund all payments within 14 days of receipt of the notice of withdrawal using the same means of payment that you used, unless expressly agreed otherwise. There are no additional fees for this.
Further information
If you have requested that the service begins during the withdrawal period, you must pay for the service provided up to that point on a pro rata basis in the event of withdrawal.
- End of the withdrawal policy -
Sample withdrawal form
(If you wish to cancel the contract, please fill out this form and send it back to us)
- I/we (...) hereby revoke the contract concluded by me/us (...) for the purchase of
- of the following services (...)
- Ordered on (...) / received on (...)
- Name, address, e-mail
- Signature (for notification in paper form)
- Date
(Delete as appropriate.)
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