A line to compare against.
Overlay a selected reference line on your chart and compare it with your records.
iOS / Android app
What you eat. What you burn.Your daily balance at a glance.
See what you eat alongside what you burn — and the difference between them. Sync your burn data from Health, and use AI to help log meals.
Intake1,850kcal
Manual / preset / AI
Burn2,150kcal
From Health
Balance−300kcal
Burn exceeds intake by 300 kcal
ExampleOne day’s calorie balance
Read the calorie balance guide →Free with adsiOS 16+ ・ Android 14+No sign-up required
Health data stays primarily on your device. See the FAQ below for what is sent when using AI.
01 / Timeline
Keep a record of meals and activity.
Meals, activity, and weight share a single chronological feed. The source of every entry (manual / AI / HealthKit) is clearly labelled.
Log meals
Record what you eat with manual entry, favorites, or AI estimates.
Import calorie burn
Auto-imports burn and weight from Apple Health / Health Connect.
See daily balance
Today's balance, in one view.
Calorie balance, logging, presets, Health sync, and daily, weekly, and monthly reviews are available for free.
This example is not connected to AI. It is a step-by-step demo with fixed placeholder values, not actual food calories.
Open the input-sheet example
04 / AI estimation and chat
Try the mealinput sheet.
Log meals manually, from favorites, or with AI estimates. Try part of the input sheet with a fixed sample.
Interactive example
Use the fixed sample to try displaying, selecting, and adding a value.
About this example
This Web example reproduces part of the current app input sheet. Food names and card values are placeholders. Camera, history, and the nutrition and date fields below are not available here. Done only shows a Web example message; nothing is saved or sent. × resets the example.
Dietary Energy
Quick Input
Selected cards · 1 item180 kcal
Total180 kcal
Add more energy
Energy you type in or estimate with AI is saved together with the selected cards.
Shown as the name in your timeline. It doesn't change calories and doesn't run an AI estimate.
Start with a name
Describe the food and portion to get a calorie estimate.
Always editable
Adjust the value before saving — the final say is yours.
Activity too
Estimates work for activity entries (e.g. “30 min walk”).
From review to conversation
Ask about a daily, weekly, or monthly review with a summary of the relevant records. Consent to the provider and shared data is required.
AI usage limits apply in the app.
02 / Weekly trend
See the week's accumulation.
Review balance and weight trends side-by-side. Look beyond a single day’s change to the records you’ve built over time.
03 / Reviews
Look back, then ask about what you notice.
Review meals, activity, and weight by day, week, or month without AI. Bring a summary of the report into an AI conversation when you want to ask about it.
Talk through your records.
Ask questions about meals and your records in chat. A conversation started from a review can continue with a summary of those records. AI answers are inferred information, not medical advice or individualized nutritional guidance.
- Sharing records
- Consent required before sending
- Web search
- When enabled with Plus
Start with one day’s balance.
Free with ads. No account needed to get started.
03 / Plus
The longer you keep recording, the more you can see.
Calorithm Plus is an optional plan available on the App Store in Japan. Google Play support for Android is planned for v2.4.0. Keep the free features, with extra ways to compare and understand your records.
Compare with public reference values.
Compare your PFC balance and salt intake with public reference values.
More detail in your reviews.
Add analysis cards to weekly and monthly reviews. Explore balance alongside weight and changes across periods.
Compare free and Plus features
| Feature | Free | Plus |
|---|---|---|
| Intake, burn, and calorie balance | ||
| Meal logging | ||
| Activity logging | ||
| Weight logging and charts | ||
| Automatic Health sync | ||
| Saved meal presets | ||
| Meal, activity, and weight timeline | ||
| Home-screen widget | ||
| Daily, weekly, monthly reviews | ||
| Reference lines on charts | — | |
| Additional review analysis | — | |
| AI estimation and chat | More access | |
| AI web search | — | |
| Previous conversations | Latest 3 | Latest 30 |
| Ads | Shown | Hidden |
Plus works only on the OS of the store where you purchased it: Plus from the App Store works on iOS, and Plus from Google Play works on Android.
Reviews themselves are free. Plus adds further comparisons and analysis.
AI usage limits apply in the app.
Meal estimates and chats can check product nutrition and other public information when needed. Requests that actually use search consume more points than requests without it. Search depends on your settings and available usage allowance; it does not run for every request.
06 / FAQ
Frequently asked questions
Don't see your question? Reach out from Support.
Is it really free?
Yes. Calorithm is free to download and use, supported by in-app advertising. Optional Calorithm Plus is available on the App Store in Japan. Google Play support for Android is planned for v2.4.0. Plus works only on the OS of the store where you purchased it. Recording and basic summaries are available for free.
How does the AI estimate work?
Enter a food name to get an estimated calorie value from AI. You can adjust the value before saving. AI usage limits apply in the app. The form on this page is an interaction example, not real AI.
Is my data kept private?
Health data and meal records are primarily stored on your device. When you use AI features, the input, photos, or record summaries needed for processing may be sent to external AI services. See the privacy policy for providers and data handling.
Is there an Android version?
Yes. The Android version is now available on Google Play.
How do I transfer my records and settings?
Use the app's backup feature to save an encrypted file and restore your records and settings. Restoring a purchase does not restore those records. Keep your backup file and passphrase before reinstalling or changing devices. See Support for the steps.
Apple Watch or Wear OS?
Not at the moment. Wearable support is being considered for future updates.
