On-device AI, always
Meal parsing and coaching run on Apple's on-device model. Your food log is never sent to a server to be understood.
100% on-device AI
A health coach that never phones home.
Glimmer runs its AI coach entirely on your iPhone. Your meals, your workouts, your weight — processed on-device, stored on-device. Nothing about your body ever leaves your phone.
Good afternoon, Sam
12-day streak
920
kcal left
5,420
steps
Protein
68/130g
Log with Coach
Coach
just had a chicken burrito bowl
Chicken Burrito Bowl
640 kcal
Added to today's totals
Talk to your coach like a person. Not a server.
Tell it what you ate, in your own words. A model built into iOS parses it, logs the macros, and replies — all inside a sandboxed process on your device. No transcript is ever transmitted, logged, or used to train anything.
Turn off Wi-Fi and cellular entirely. Glimmer keeps working.
Streaks that reward showing up.
Check-ins, steps, workouts, protein goals — every one builds its own streak, with real badges to show for it. Miss a day here and there and you're still covered: one slip a week doesn't reset the count.
Badges you earn are yours for good, even if a streak resets later.
Awards
Chimera Streak
Check-in & Logging
Badge history
Built so we can't see your data. Not just so we won't.
Privacy isn't a setting you toggle — it's the architecture. Here's exactly what that means.
No network required
Log meals, chat with your coach, and check your rings fully offline. There's no account server in the loop.
Delete means delete
Uninstalling the app removes everything with it. There's no copy sitting in a data warehouse somewhere.