Wearable fitness tracker that uses AI to optimize workouts, sleep, and recovery with continuous health insights.
Sustain
$7.99Starting price
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About Sustain
Sustain is an iPhone app designed for users of GLP-1 medications who want to monitor protein intake and body composition rather than just weight. It consolidates dose logging, protein tracking, weight monitoring and side-effect recording into a single interface. The app estimates protein from photographed meals without requiring database searches or portion calculations, and it displays trends for both lean mass and fat mass separately. Users can import lab reports by photographing them, and the app transcribes values for review while leaving interpretation to the prescriber. Sustain does not provide medical advice, suggest dose changes or diagnose conditions. It syncs with Apple Health for weight and protein data and offers widgets, Live Activity and Apple Watch complications for quick logging. The free tier includes manual logging indefinitely, while a paid tier unlocks AI-powered features such as photo protein estimates, trend analysis and side-effect pattern reports.
Key features
- Dose logging with titration tracking
- Protein estimation from meal photos
- Lean mass and fat mass trend visualization
- Side-effect pattern reporting
- Lab report transcription from photos
- Apple Health integration
- Widgets, Live Activity and Apple Watch complications
- Maintenance program after goal weight reached
Use cases
- Monitoring protein intake while using GLP-1 medications
- Tracking body composition changes during weight loss
- Reviewing lab results alongside dose and weight trends
Pros
- Tracks dose adherence, protein intake and body composition in one place
- Estimates protein from meal photos without portion math or database searches
- Separates lean mass and fat mass trends to show what weight changes are made of
- Syncs with Apple Health for weight and protein data
- Free manual logging with no trial, card or countdown
Cons
- iPhone-only application
- No Android or web version available
- AI features require a paid subscription
- Does not provide medical advice or dose suggestions
Frequently asked questions about Sustain
What does Sustain do?
Sustain is an iPhone app designed for users of GLP-1 medications to track protein intake, body composition, dose logging, weight monitoring, and side effects in one interface. It estimates protein from photographed meals, displays trends for lean mass and fat mass separately, and allows importing lab reports by photographing them.
Who is Sustain for?
Sustain is for individuals using GLP-1 medications who want to monitor protein intake and body composition rather than just weight. It helps users avoid losing lean mass while tracking progress during weight loss.
Does Sustain provide medical advice or suggest dose changes?
No, Sustain does not provide medical advice, suggest dose changes, diagnose conditions, or interpret lab values. It transcribes and tracks data, leaving clinical decisions to the user's prescriber.
Can I import my lab reports into Sustain?
Yes, users can photograph lab reports, and Sustain transcribes the values for review. Interpretation of these values remains the responsibility of the prescriber.
What integrations does Sustain support?
Sustain syncs with Apple Health for weight and protein data. It also offers widgets, Live Activity, and Apple Watch complications for quick logging.
How do I get started with Sustain?
Download the app for free on iPhone. Manual logging of dose, weight, protein, and side effects is free forever with no card required. The free tier includes basic features, while the paid tier unlocks AI-powered features like photo protein estimates and trend analysis.
