Snap a photo. Get complete nutrition in 15 seconds.
GAYA uses Google Gemini 3 to identify every food item in your photo, then cross-references each ingredient against FatSecret's verified nutrition database β over 900,000 professionally reviewed foods. Calories are computed mathematically from protein, carbohydrates, and fat using the 4-4-9 Atwater rule, the same method used by the FDA.
- Identifies multiple foods in a single photo
- FatSecret database cross-reference on every scan
- Macros calculated mathematically, not AI-estimated
- Flags low-confidence results so you always know when to verify
- Works on complex dishes, restaurant meals, and home-cooked food
900,000+ professionally reviewed foods.
Every nutrition entry in GAYA is sourced from FatSecret's professionally maintained database β the same database used by healthcare platforms and clinical nutrition software. Unlike apps that rely on crowdsourced entries, FatSecret's data is reviewed by registered dietitians for accuracy. This is why GAYA can guarantee that your calorie counts are internally consistent.
- 900,000+ professionally reviewed food entries
- Used by healthcare platforms and clinical nutrition software
- Reviewed by registered dietitians
- Includes packaged foods, restaurant meals, and raw ingredients
- Barcode scanner for packaged foods
The only calorie tracker with a live AI coach.
GAYA's AI voice coach is powered by OpenAI's Realtime API, giving you a live voice conversation with an AI that has reviewed your actual nutrition data. Choose from four distinct coaching personas based on your motivation style. Your coach tracks your progress over time, notices patterns in your diet, and gives personalized feedback β not generic tips.
- Live voice conversation β not text, not pre-scripted
- Coach reviews your real nutrition data before responding
- 4 personas: Balanced, Ruthless, Mindful, Roast Master
- Coach memory β tracks your habits over time
- Log meals by talking to your coach
Understand why your body is responding the way it is.
Every evening at 8 PM, GAYA's AI analyzes your day's nutrition data and delivers a personalized insight tailored to your specific patterns and goals. These aren't generic tips β they're grounded in your actual data, citing peer-reviewed research from PubMed and CDC. The more you track, the more precise your insights become.
- Delivered daily at 8 PM local time
- Grounded in your actual food log data
- Cites peer-reviewed research (PubMed, CDC)
- Covers patterns in calories, macros, timing, and trends
- Actionable recommendations, not general advice
See exactly how far you've come.
GAYA's goals system is built around the science of sustainable weight loss. Your calorie target is calculated using the Mifflin-St Jeor equation β the most clinically validated BMR formula β accounting for your current weight, height, age, activity level, and goal timeline. Track weight loss progress, daily calorie targets, macro goals, and step counts in one view.
- Calorie target from Mifflin-St Jeor BMR calculation
- Daily net calorie view (eaten minus burned)
- Protein, carb, and fat targets with visual progress
- Weight trend chart
- Step tracking via HealthKit
Real calorie burn. Real deficit.
GAYA syncs with your Apple Watch via HealthKit to display your real-time calorie burn alongside your food log. This gives you an accurate net calorie deficit throughout the day β not an estimate. See your calories consumed and burned update live as you move.
- HealthKit integration for real-time calorie burn
- Live net deficit calculation
- Step count synced automatically
- Works with Apple Watch Series 3 and later
No identifiers. No data sold. Ever.
GAYA collects no personally identifiable information β no name, no email, no phone number. You choose a username and start. Your nutrition data stays on your device and our servers are not linked to any identity. We do not sell or share your data with advertisers, third parties, or data brokers.
- No name, email, or phone number required
- No advertising identifiers collected
- Data never sold to third parties
- No ads β ever
- Anonymous by design, not as an afterthought
Frequently asked questions
Everything you need to know about how GAYA works.
How accurate is GAYA's calorie tracking?
GAYA achieves high accuracy by combining two verification steps: Google Gemini 3 identifies foods from photos, then each ingredient is cross-referenced against FatSecret's professionally verified database of 900,000+ foods. Calories are always computed mathematically using the 4-4-9 Atwater rule rather than estimated by AI β so results are internally consistent.
How does the AI voice coach work?
GAYA's AI coach runs on OpenAI's Realtime API, enabling live voice conversations with less than 500ms latency. Before each session, the coach reviews your actual food log, macro breakdown, and progress toward your goals. You can speak with your coach at any time β ask questions, log meals verbally, or request a daily recap.
Is GAYA available on Android?
GAYA is currently available on iOS only. An Android version is in development.
Does GAYA require an account?
GAYA does not require a name, email, or phone number. You choose a username and begin tracking immediately. This is part of GAYA's privacy-first design β your nutrition data is never linked to your identity.
What is the FatSecret database?
FatSecret is one of the world's largest professionally maintained nutrition databases, used by healthcare platforms and clinical nutrition software. Unlike crowdsourced databases, FatSecret entries are reviewed by registered dietitians. GAYA cross-references every AI food scan against FatSecret's 900,000+ verified entries.
How are GAYA's daily insights generated?
Each evening at 8 PM local time, GAYA's AI analyzes your day's food log and generates a personalized insight specific to your patterns and goals. Insights are grounded in peer-reviewed nutrition research (PubMed, CDC) and focus on actionable recommendations rather than generic tips.
Ready to start tracking smarter?
Download GAYA free on iOS. No email. No credit card. Just take a photo.
Download Free on iOS