Terms of Service — ResonanceGuide

1. Access, test builds, and permitted use

You may use the app for lawful personal breathing practice on compatible devices. Tremia grants a non-exclusive right to use the app for that purpose for the duration of the applicable agreement. Rights granted by law, including permitted interoperability work and applicable open-source licences, are not restricted by these terms.

Pre-release builds may contain errors, incomplete integrations, or features that change before release. Test availability, device compatibility, and store availability may be limited. A preview does not guarantee a release date or the inclusion of a particular feature in a future version. This description does not exclude statutory rights for any product supplied to you.

2. General wellness and safe use

ResonanceGuide is intended for general wellness and breathing practice. It is not intended to diagnose, prevent, monitor, treat, or cure disease and is not a substitute for professional medical advice or an emergency service.

Heart rate readings, HRV metrics, and calibration results depend on sensor quality, fit, movement, and device compatibility. They may be incomplete or inaccurate and must not be used for medical decisions. RR-based calibration requires a compatible sensor that supplies beat-to-beat intervals; watch BPM readings alone are insufficient.

Practise only in a safe place where you can stop freely, never while driving or operating machinery. Stop if you feel dizzy, short of breath, in pain, or otherwise unwell. Consult a qualified healthcare professional if you are unsure whether paced breathing is suitable for you. Nothing in this section limits liability that cannot lawfully be limited.

3. Devices, companions, and local data

Features depend on your operating system, permissions, connected sensors, and the build supplied. Apple Watch and Wear OS apps are companions and require the paired phone. Desktop and web downloads are not offered by this preview.

No Tremia account is required. Session and calibration data are stored locally; Tremia does not provide a cloud backup. You control any export or optional health-platform connection. Removing local app data can remove your history. Data-processing details are set out in the ResonanceGuide Privacy Policy linked on this website.

4. Free features, advertisements, and optional purchases

The app is being prepared with a free advertising-supported version and optional Premium purchases. Purchase availability, price, included features, billing period, trial eligibility, and renewal conditions are shown in the app and the relevant store before you confirm a purchase. This preview is not a price offer and does not promise a free trial.

Where available, purchases are handled through Google Play or the Apple App Store. Manage or cancel a renewing subscription through the store account used to purchase it, following the cancellation deadline shown there. Uninstalling the app does not cancel a subscription. Statutory termination and refund rights remain unaffected.

An optional rewarded advertisement may unlock a specified feature where offered. The app explains the benefit before you choose to watch. Advertising availability is not guaranteed. You do not have to disclose health readings to Tremia or an advertiser to obtain an advertised reward.

5. Withdrawal and consumer rights

Consumers retain all applicable statutory withdrawal, warranty, refund, and termination rights. Information about the applicable withdrawal period, how to exercise it, the contracting party, and any model withdrawal form must be provided in the relevant purchase process and confirmation.

Downloading the app, visiting this website, or accepting these terms alone does not waive a statutory right of withdrawal. Any early expiry of that right for digital content requires the conditions imposed by applicable law, including any necessary express consent and acknowledgement. Contact the relevant store or Tremia if you need help identifying the correct route; store refund rules do not replace mandatory legal rights.

6. Updates and changes

Tremia supplies updates required by applicable law, including security updates, for the legally required period. Please install supplied updates necessary for safe and compatible operation. Statutory rights relating to digital products remain unaffected.

Changes beyond those needed to maintain contractual conformity are subject to the requirements of applicable law. These terms do not grant an unrestricted right to remove purchased features or change prices. Where German consumer law applies, the information and termination protections of § 327r BGB remain available.

Changes to an existing agreement require a legally valid basis or your agreement. Publishing a revised version of these terms does not, by itself, amend an existing contract, and continued use is not treated as blanket consent.

7. Liability and statutory remedies

Tremia is liable without limitation for intent, gross negligence, culpable injury to life, body, or health, fraudulent concealment, any expressly assumed guarantee, and liability under mandatory product-liability law.

For other damage caused by ordinary negligence, Tremia is liable for breach of an essential contractual obligation, limited to damage that was typical and foreseeable when the contract was concluded. An essential obligation is one whose fulfilment enables proper performance of the contract and on whose observance you may regularly rely. This limitation applies only to the extent permitted by mandatory law.

Your statutory rights concerning defects, conformity of digital products, withdrawal, price reduction, and termination are not excluded. The pre-release status does not remove these protections.

8. Governing law, disputes, and contact

German law applies, excluding the UN Convention on Contracts for the International Sale of Goods. Consumers retain the mandatory protection of the law of their habitual residence and the courts available to them under applicable law. No exclusive court jurisdiction is imposed on consumers.

Tremia is neither willing nor obliged to participate in dispute-resolution proceedings before a consumer arbitration board. You can contact support@tremia.app with questions or complaints. If a provision is invalid, the applicable statutory rule replaces it; the remaining agreement continues to the extent allowed by law.