Last updated: May 31, 2026
1. Introduction
These Terms of Use ("Terms") govern your use of the GymViz app ("App") for iPhone and Apple Watch, provided by Nader Grebe ("we", "our", or "us"). By downloading, installing, or using the App, you agree to be bound by these Terms. If you do not agree, please do not use the App.
2. The App
GymViz is a workout tracking app that lets you build custom workouts and exercises, log sets and reps, follow your training in real time on iPhone and Apple Watch, and review your training history and progress.
3. Purchase and Pricing
3.1 One-Time Purchase
GymViz is offered as a one-time, non-recurring purchase through the Apple App Store. After purchase, you receive ongoing access to all included features of the App without any further charges. There are no subscriptions and no auto-renewal.
3.2 Pricing and Payment
The current purchase price is displayed in the App Store and in the App before purchase. Payment is charged to your Apple ID account at confirmation of purchase. Prices may vary by country and are subject to change for new purchases; any change will not affect users who have already completed the purchase.
3.3 Scope of the Purchase
The one-time purchase grants you the right to use the App and the features available at the time of purchase. Future features, content, or major new versions may, at our sole discretion, be included free of charge or be offered as separate paid purchases. We do not guarantee that any specific future feature will be made available free of charge.
3.4 Restore Purchases
If you reinstall the App or install it on another device signed in with the same Apple ID, you can restore your purchase at any time via the "Restore Purchases" option in the App. Purchases are tied to your Apple ID in accordance with Apple's terms.
3.5 Refunds
All purchases are processed by Apple. Refund requests are handled exclusively by Apple in accordance with Apple's refund policy. Please contact Apple Support at https://support.apple.com to request a refund.
4. Apple Standard EULA
The App is distributed via the Apple App Store. In addition to these Terms, your use of the App is subject to Apple's standard End User License Agreement ("Apple EULA"), available at:
In the event of any conflict between these Terms and the Apple EULA, the more restrictive terms shall prevail with respect to your use of the App.
5. Health and Safety Disclaimer
GymViz is not a substitute for professional fitness coaching, medical advice, diagnosis, or treatment.
The App provides general workout tracking and exercise content for informational and personal fitness purposes only. The exercises, workouts, and instructions shown or logged in the App are not personalized to your individual physical condition, fitness level, injuries, or medical history.
Before beginning any strength training, cardio, or exercise program, you should:
Consult a qualified physician or healthcare provider, especially if you are pregnant, have any pre-existing medical conditions, injuries, or concerns about your health.
Consider working with a certified fitness trainer who can observe your form and provide personalized guidance, particularly when lifting weights or performing complex movements.
Listen to your body and stop immediately if you experience pain, dizziness, shortness of breath, or any other discomfort.
You use the App and perform any exercises shown within or logged through it entirely at your own risk. We are not responsible for any injuries, health issues, or damages that may result from your use of the App or performance of any exercises.
6. License
We grant you a limited, non-exclusive, non-transferable, revocable license to use the App for your personal, non-commercial use on Apple devices that you own or control, in accordance with these Terms and the Apple EULA.
7. Acceptable Use
You agree not to:
Reverse engineer, decompile, or attempt to extract the source code of the App
Use the App for any unlawful purpose
Resell, redistribute, or sublicense the App or any of its content
Circumvent any technical limitations or subscription mechanisms
8. Intellectual Property
All content within the App — including text, graphics, illustrations, exercise descriptions, muscle map data, default workouts, and the App's design — is owned by us or our licensors and is protected by copyright and other intellectual property laws. Custom workouts, custom exercises, training logs, notes, and any photos you add yourself remain entirely yours.
9. Disclaimer of Warranties
The App is provided "as is" and "as available", without warranties of any kind, whether express or implied, including but not limited to fitness for a particular purpose, accuracy, or uninterrupted availability. We do not guarantee that the App will be error-free or meet your specific requirements.
10. Limitation of Liability
To the maximum extent permitted by applicable law, we shall not be liable for any indirect, incidental, special, consequential, or punitive damages arising from or related to your use of the App, including but not limited to personal injury, loss of data, or loss of profits.
Nothing in these Terms limits liability that cannot be limited under applicable law, including liability for intentional misconduct or gross negligence, or for personal injury caused by our negligence.
11. Changes to These Terms
We may update these Terms from time to time. The updated version will be made available within the App and on our website. Material changes will be communicated in advance where reasonably possible. Continued use of the App after changes take effect constitutes your acceptance of the updated Terms.
12. Termination
We may suspend or terminate your access to the App or to GymViz Pro if you materially breach these Terms. You may stop using the App at any time by deleting it from your device.
13. Governing Law
These Terms are governed by the laws of the Federal Republic of Germany, without regard to its conflict of law principles. Mandatory consumer protection laws of your country of residence remain unaffected.