Terms of Service
Effective Date: May 25, 2026
These Terms of Service govern your use of the current Android, Wear OS, and iPhone versions of IntervalGuide and any Apple Watch companion features made available with those versions. By downloading, installing, or using the App, you agree to these Terms. If you do not agree, do not use the App.
1. Scope and Permitted Use
IntervalGuide is a fitness interval timer with optional heart rate features. You may use the App only for lawful, personal, and non-commercial training purposes. You agree not to:
- Reverse engineer, decompile, or disassemble the App or any part thereof
- Use the App for any unlawful purpose or in violation of any applicable laws or regulations
- Modify, adapt, or create derivative works based on the App
- Remove, alter, or obscure any copyright, trademark, or other proprietary notices in the App
2. Health and Safety Notice
IntervalGuide is not a medical device and is intended solely for fitness, workout, and general wellness purposes. It is not intended to diagnose, monitor, treat, cure, or prevent any disease or medical condition.
Heart rate readings, heart rate zones, workout summaries, and related information depend on the connected device, operating system, sensors, and Bluetooth accessories used and may be incomplete or inaccurate.
If you feel unwell or experience pain, dizziness, or other concerning symptoms, stop exercising and seek qualified medical advice. The App does not replace professional medical judgment.
3. Accounts, Local Data, and Privacy
The App does not require a Tremia account. Your use of the App is also subject to our Privacy Policy available on this website.
Workout and health data are designed to remain under your control on your devices or in the health framework that you actively enable.
4. Subscriptions and In-App Purchases
IntervalGuide offers an optional premium subscription. On Android and Wear OS, subscriptions are processed through Google Play. On iPhone, subscriptions are processed through the Apple App Store. Your purchase is also subject to the terms and policies of the relevant store.
- Subscription fees are charged by the relevant store operator upon confirmation of purchase
- Subscriptions automatically renew unless you cancel them in time before the end of the current billing period
- You can manage and cancel your subscription through the subscription settings of the store through which you purchased it
- Refunds are handled by the relevant store operator in accordance with its applicable refund policy
5. Intellectual Property
The App, including its design, code, graphics, icons, user interface, and all content, is the intellectual property of Tremia and is protected by applicable copyright, trademark, and other intellectual property laws. All rights not expressly granted in these Terms are reserved by Tremia.
6. Availability, Updates, and Feature Changes
We may provide updates, bug fixes, security patches, and feature changes where reasonably required to maintain security, legality, platform compatibility, or the quality of the App.
Availability of individual features may depend on your device, operating system version, connected accessories, and third-party platform services such as Google Play, Wear OS, the Apple App Store, Apple Health, Health Connect, or other platform services used by the App.
7. Disclaimer of Warranties
We strive to provide a reliable app, but availability may occasionally be limited by maintenance, connectivity, device compatibility, or third-party platform services.
To the extent permitted by law, the App is provided as is and as available. Mandatory statutory rights, including mandatory consumer rights, remain unaffected.
8. Liability
Nothing in these Terms excludes or limits liability for intent, gross negligence, injury to life, body, or health, fraudulent concealment, claims under the German Product Liability Act, or any other liability that cannot be excluded or limited by law.
In cases of ordinary negligence, Tremia is liable only for the breach of essential contractual obligations and only for the typical foreseeable damage.
Any otherwise applicable limitation of liability applies only to the extent permitted by mandatory law.
9. Suspension and Termination
We may suspend or terminate your right to use the App if you materially violate these Terms or use the App unlawfully.
Termination does not affect rights and obligations that by their nature continue after termination.
10. Changes to These Terms
We may update these Terms for valid reasons, including legal or regulatory changes, security requirements, platform rules, or changes to the App.
We will publish the revised Terms on this page with a new effective date. The revised Terms apply only from their effective date onward. If you do not agree to the revised Terms, you must stop using the App.
11. Governing Law and Consumer Rights
These Terms are governed by the laws of the Federal Republic of Germany, excluding the United Nations Convention on Contracts for the International Sale of Goods (CISG).
If you are a consumer, mandatory consumer protection rules of the country in which you habitually reside remain unaffected. Mandatory statutory forums available to consumers remain unaffected as well.
12. Severability
If any provision of these Terms is found to be invalid or unenforceable, the remaining provisions remain in effect. In place of the invalid provision, the statutory rule applies.