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. What We Don't Do

fuelOS does not:

• Store your meal photos or audio on our servers
• Use your data to train our own AI models
• Share your data with advertisers or data brokers
• Analyze your data for marketing purposes
• Keep a permanent copy of photos sent to AI services

6. 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 and in iCloud (if you have iCloud sync enabled)
• You can disable this at any time in Settings

7. Your Control

You are in complete control:

• Delete meals: Swipe to delete any meal from your history
• Delete account: Permanently delete all data from Settings
• Disable features: Turn off Health sync, iCloud sync, or delete the app entirely

8. 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

9. Questions?

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