Privacy Policy

Martin's Training Diary  ·  Last updated: June 30, 2026

1. Information We Collect

Martin's Training Diary does not collect any personal information. All data you enter — workouts, body measurements, nutrition logs, weight history — is stored exclusively on your device using Apple's on-device storage (AsyncStorage). This data never leaves your device unless you explicitly use the Export feature.

2. Data You Enter

The following data is stored locally on your device only:

• Workout logs (exercises, sets, reps, weights, duration, GPS routes)
• Body measurements (weight, height, body fat %, muscle mass)
• Nutrition logs (food entries, macros, calorie goals)
• Profile information (age, gender, activity level, fitness goals)
• InBody scan data

None of this data is transmitted to any server or third party.

3. Apple Health (HealthKit)

Martin's Training Diary can read data from Apple Health with your explicit permission. This includes:

• Workouts recorded by Apple Watch
• Resting heart rate and workout heart rate
• Step count
• Active energy burned
• Distance (walking, running, cycling, swimming)
• Sleep analysis data

Health data is read from HealthKit and stored locally on your device only. It is never uploaded, shared, or transmitted to any external service. You can revoke Health permissions at any time in your iPhone Settings → Privacy & Security → Health.

4. Location Data

Martin's Training Diary can access your location during a workout to track GPS routes (distance, pace, speed, elevation). Location data is stored locally on your device as part of your workout history. Location access is optional — the app functions fully without it. You can revoke location permissions at any time in your iPhone Settings.

5. Camera

The camera is used exclusively to scan barcodes when adding food items. No photos or video are recorded or stored. Camera access is optional.

6. Third-Party Services

Martin's Training Diary uses RevenueCat (react-native-purchases) to manage in-app purchases and subscriptions. RevenueCat communicates with Apple's StoreKit to process transactions. It does not collect personal data, health data, or usage analytics. No other third-party analytics, advertising, or tracking SDKs are used.

6a. Food Database

The app includes an offline food database sourced from Open Food Facts, licensed under the Open Database License (ODbL). This data is bundled in the app — no network requests are made to look up food items.

7. Data Export

The app includes an Export feature that allows you to export your data as a JSON file. This export is initiated solely by you and goes directly to a destination you choose (e.g. Files app, email). We do not receive a copy.

9. Children's Privacy

Martin's Training Diary does not knowingly collect data from children under 13. The app does not collect any data from any user regardless of age.

13. Changes to This Policy

If we make material changes to this privacy policy, we will update the "Last updated" date at the top of this page. Continued use of the app after changes constitutes acceptance of the updated policy.

10. Your Rights (GDPR)

If you are located in the European Union, you have the right to:

• Access your data (use the in-app Export feature)
• Delete your data (use the in-app Reset feature, or simply delete the app)
• Data portability (Export produces a standard JSON file)

Since all data is stored locally on your device and we have no access to it, exercising these rights requires no request to us — you have full control at all times.

11. Medical Disclaimer

Martin's Training Diary is a fitness tracking tool, not a medical device. The app provides estimated calculations (BMI, BMR, TDEE, macro recommendations) for informational purposes only. These are not medical advice. Consult a qualified healthcare professional before making changes to your diet or exercise program.

12. Contact

If you have any questions about this privacy policy, you can contact us at:

martinstrainingdiary@gmail.com