AI & Data Use

1. AI-Powered Nutrition Analysis

fuelOS uses Google Gemini, a large language model (LLM), to analyze your meal photos and descriptions to estimate nutritional content.

What gets sent to Google:

• Photos of your meals (compressed JPEG images)
• Text descriptions you provide
• Voice transcriptions (converted to text first via Deepgram)

What Google returns:

• Estimated calories
• Estimated macronutrients (protein, carbs, fat)
• Estimated micronutrients (vitamins, minerals)
• Meal name and description

2. How Accurate Is It?

AI nutrition estimates are approximations, not exact measurements. Accuracy depends on:

• Photo quality and angle
• Food visibility and portion size clarity
• Complexity of the meal (homemade vs. packaged foods)
• Description detail you provide

Use fuelOS for: General tracking, identifying patterns, and awareness of eating habits.

Do not use fuelOS for: Medical decisions, strict dietary requirements, or clinical nutrition needs.

3. Voice Transcription

When you use voice input, your audio is sent to Deepgram's speech recognition API:

• Audio is sent over encrypted connections
• Transcription happens in real-time
• Audio is not stored by Deepgram after transcription
• The resulting text is then sent to Google Gemini for nutrition analysis

4. Data Retention by Third Parties

Google Gemini:

• We use Google's API in a way that does not allow them to use your data to train their models
• Images and text are processed for analysis only
• See Google's Privacy Policy for their data handling practices

Deepgram:

• Audio is processed in real-time and not stored
• See Deepgram's Privacy Policy for details

5. How Your Data Is Stored

Meal Photos: If you sign in, your meal photos are stored securely in Firebase Storage (Google Cloud) solely to display your meal history within the app and sync across your devices. Photos are associated only with your authenticated account and are not accessible to anyone else.

Voice Recordings: Audio is processed in real-time for transcription and is not stored. Only the resulting text transcription is retained as part of your meal entry.

6. What We Don't Do

fuelOS does not:

• Use your data to train AI models (ours or third-party)
• Share your data with advertisers or data brokers
• Analyze your data for marketing or profiling purposes
• Allow any third party to access your meal photos or personal data
• Retain voice recordings after transcription

Your data exists solely to provide you with the fuelOS service. It is not monetized, analyzed, or used for any purpose other than showing you your own nutrition information.

7. Apple Health Integration

If you enable Apple Health (HealthKit) integration:

• Nutrition estimates are written to your local Apple Health database
• No data is sent to external servers for this sync
• Data stays on your device only
• You can disable this at any time in Settings

8. Your Control

You are in complete control:

• Delete meals: Swipe to delete any meal from your history
• Delete account: Email support@fuelos.site to permanently delete all your data
• Disable features: Turn off Health sync or delete the app entirely

9. Future AI Features

As we add new AI capabilities, we will:

• Update this policy to reflect changes
• Maintain the same privacy-first approach
• Give you control over new features
• Notify you of significant changes

10. Questions?

If you have questions about our AI usage or data practices, contact us at: ai@fuelos.site