Log a meal in seconds.
Point the camera and confirm. Voice and barcode for the meals a photo cannot explain.
Now in private beta
A nutrition coachthat knows what you ate.
Log a meal from a photo, your voice, or a barcode. Then ask anything, and the answer comes from your own log, not a generic diet chart.
Join the waitlist
One email when we launch.
Try it now: tap a question on the phone.Try it now: tap a question on the phone below.
Moonbelt
Ask anything about your diet, meals, or how to hit your daily goals.
TRY ASKING
How it works
Three steps. That is the whole product.
Greek salad bowl
1 bowl
24g
38g
14g
340kcal
Log meal
Your activity shows up on its own.
Steps, workouts, and sleep arrive from your phone’s health app, read only. Hydration and weight take a tap each.
No day ever gets a grade. Miss one and a Streak Shield keeps your streak alive.
Wed, Aug 26
12
S23
M24
T25
W26
T27
F28
S29
Calories
Cut · 0.5 lb/wk
1,360eaten
640left
2,000target
Protein96g / 132g
Carbs118g / 210g
Fat32g / 68g
Steps
6,214of 8,000
Water
5of 8 glasses
Workout
48m412 kcal
Sleep
7h 12mDeep 1h 22m
Ask, and get an answer about you.
Not a chatbot with a nutrition prompt. It reads your real log before it answers.
- Chat. Ask anything. Answers cite your own numbers.
- Meal plans. A week around your targets and your taste. Swap anything.
- Insights. A daily note and a weekly read. Plain language.
Am I on track for protein today?
You’re at 96g of your 132g goal. Solid pace so far.
Why it works
Most calorie apps guess. Yours starts with you.
The same methods a dietitian uses, with the safety limits built in.
01
A target built from you, not a template
The resting-energy formula dietitians use, from your age, height, weight, and activity. No generic 1,500 kcal default.
02
Diet style changes the food, not the calories
Research finds no single ideal macro split. Choose keto or balanced and your calories stay the same; only where they come from changes.
03
Guardrails you can’t talk it out of
Never below the NIH calorie minimum. Protein kept within the recommended range and adjusted for body size, so a big number never becomes an unsafe one.
04
The week, not the day
One day tells you little. Your weekly review reads all seven: which weekday your protein dips, which nutrients stay low all week, and what to change next.
Based on guidance from the National Academies, the NIH, and the American Diabetes Association. How we calculate
Private by design
Your food log is yours. It stays that way.
A nutrition app knows a lot about you. Here is what moonbelt does with it, and what it never does.
Never used to train AI
Your meals, photos, and coach chats go to Google’s paid Gemini service only to produce your answer. Google is contractually barred from training on them.
Meal photos stay on your phone
Photos saved with your meals live only on your device. When you scan a plate, the photo is sent for analysis and is not stored on our servers.
No ads. No data sales.
We do not sell your data or share it for advertising. Not with advertisers, data brokers, insurers, or employers.
Health data, read only
moonbelt reads steps, workouts, and sleep from Apple Health or Health Connect, only for the categories you turn on, and never writes anything back.
Questions
Before you download.
One plan, moonbelt Premium, with every feature included. No ads, and no stripped-down tier with the good parts locked away.
It is billed through the App Store or Google Play, and you can cancel anytime from your account there. We will publish the price here before launch.
It is an estimate, like any AI. You see every food and portion before anything is saved, and you can change any of them.
For packaged food, scan the barcode instead. You can also search the food database, describe the meal by voice, or enter it by hand.
No. You pick your goal: lose, maintain, or gain. Your calorie and macro targets are built around that goal and your pace, and the coach answers with them in mind.
You can also use it simply to eat more protein or understand what you eat.
Both. On iPhone it connects to Apple Health, and on Android to Health Connect, so your steps, workouts, and sleep show up without extra logging.
Yes. Your logs are saved on your phone first and sync once you are back online, so you can log on a plane or with no signal. Photo scanning, voice logging, meal plans, and the coach need a connection.
More answers on the support page.
Eat well, minus the guesswork.
Join the waitlist and we will email you once, on launch day.
Join the waitlist iPhone and Android. One plan, everything included, cancel anytime.