Privacy Policy
Last updated: April 8, 2026
1. Who We Are
G10 (“we”, “us”, “our”) is an AI-powered calorie tracking and nutrition assistant available as a mobile application and at g10app.com. The service is operated by Dmitrii Trifonov (sole proprietor).
This Privacy Policy explains how we collect, use, store, and protect your personal data when you use G10.
2. Data We Collect
2.1. Information you provide
- Account data: email address (via Apple Sign-in, Google Sign-in, or email link through Firebase Authentication)
- Body & health data: gender, birth year, height, weight, body fat level, activity level, fitness experience
- Nutrition goals: target weight, weekly weight change rate, calorie and macronutrient targets, protein preference, calorie distribution across the week
- Food entries: meal logs including food items, portions, calories, macronutrients, and meal timing
- Food photos: images of meals you upload for AI-powered food recognition
- Custom foods & recipes: food items, recipes, saved meals, and bookmarks you create
- Coaching conversations: messages you exchange with the AI nutrition coach
- Payment information: subscription plan choice and subscription status. We do not store payment card details — these are handled entirely by Apple and Yookassa.
2.2. Information collected automatically
- Usage analytics: app events such as feature usage and subscription events (processed by Amplitude on EU servers)
- Error reports: crash data and performance metrics (processed by Sentry)
- Device information: device model and operating system version (collected implicitly through analytics SDKs)
2.3. Information we do NOT collect
- Advertising identifiers (IDFA / GAID)
- Precise location data
- Contact lists, calendar data, or browsing history
- Apple HealthKit data — it is read locally on your device with your permission but is never sent to our servers
3. How We Use Your Data
- Provide the service: track nutrition, calculate calorie and macro targets, manage your weight program
- AI food recognition: process food photos and text descriptions to identify ingredients and estimate nutritional content
- AI coaching: provide personalised nutrition guidance based on your goals and eating patterns
- Manage subscriptions: process and manage your premium subscription
- Improve the app: analyse aggregated usage patterns, identify bugs, optimise performance
- Notifications: send service-related reminders (local on-device notifications only; we do not use remote push)
3.1. Legal basis for processing (GDPR)
| Purpose | Legal basis |
|---|---|
| Provide the service (nutrition tracking, calorie targets, weight programs) | Performance of a contract (GDPR Art. 6(1)(b)) |
| AI food recognition & coaching | Performance of a contract (GDPR Art. 6(1)(b)) |
| Manage subscriptions & payments | Performance of a contract (GDPR Art. 6(1)(b)) |
| Usage analytics & app improvement | Legitimate interest (GDPR Art. 6(1)(f)) |
| Error tracking & crash reporting | Legitimate interest (GDPR Art. 6(1)(f)) |
| Processing body & health data for personalised targets | Explicit consent (GDPR Art. 9(2)(a)) |
You may withdraw consent at any time without affecting the lawfulness of processing carried out before withdrawal.
4. AI & Automated Processing
We use Google Gemini AI to recognise food items from photos, estimate nutritional content from text or image input, and generate coaching responses. When you use these features, the relevant data (photo, text description, or meal context) is sent to Google’s servers for processing. Google’s own privacy practices apply to that processing.
AI-generated nutritional data is an estimate. It may contain inaccuracies and does not constitute medical or dietary advice.
5. Third-Party Services
We share data with the following third parties solely to operate the service:
| Service | Purpose | Data shared |
|---|---|---|
| Google Firebase | Authentication | Email, sign-in credentials |
| Google Gemini AI | Food recognition & coaching | Food photos, text descriptions, meal context |
| Apple | Sign-in with Apple, In-App Purchases | Apple ID, subscription data |
| Yookassa | Web payments | Payment transaction data |
| Amplitude | Analytics (EU servers) | App events, pseudonymised user properties (e.g. age group, BMI category, goal type) |
| Sentry | Error tracking | Crash reports, device info |
| AWS S3 | Image storage | Uploaded food photos |
We do not sell your personal data to any third party.
6. Data Storage & Security
- All data is transmitted over HTTPS / TLS encryption.
- Data is stored on cloud servers with role-based access controls.
- Food photos are stored in encrypted cloud storage (AWS S3).
- Payment card details are never stored on our servers — they are handled entirely by Apple and Yookassa.
7. Data Retention
- Account data and food logs are retained for as long as your account is active.
- When you delete data within the app it is marked as deleted and retained for up to 30 days for recovery purposes, after which it is permanently removed.
- You can delete your account directly from the app (Profile → Delete Account). All associated data will be permanently removed. You may also request deletion by emailing hello@g10app.com.
- Analytics and error-tracking data is retained according to each provider’s own retention policy.
8. Your Rights
Depending on your jurisdiction you may have the right to:
- Access the personal data we hold about you
- Correct inaccurate or incomplete data
- Request deletion of your data
- Object to or restrict processing
- Receive your data in a portable format
- Withdraw consent at any time
To exercise any of these rights, email us at hello@g10app.com.
9. Children’s Privacy
G10 is not intended for children under 16. We do not knowingly collect personal data from children. If you believe a child has provided us with personal data, please contact us and we will delete it promptly.
10. International Data Transfers
Your data may be processed in countries other than your country of residence. We take reasonable steps to ensure appropriate safeguards are in place for such transfers. Analytics data is processed on EU servers (Amplitude).
11. Changes to This Policy
We may update this policy from time to time. The current version is always available at g10app.com/privacy. Continued use of the app after changes constitutes acceptance of the updated policy.
12. Contact
For questions about this Privacy Policy or your personal data:
- Email: hello@g10app.com
- Website: g10app.com