Ritmai
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Understand the body rhythms that shape your day.

A learning companion that connects food, timing, sleep, and body signals — with goals only if you set them, and never a streak or a judgment.

Download on the App Store

Free. iPhone, iOS 18 and later.

Export or erase anytimeApple Health compatibleNo account required

Saturday 29 August

2 reviewed meals

1,131kcal

Estimated energy

62g

Estimated protein

An illustrative 24-hour digestive load curve. It rests near a baseline overnight, rises after each reviewed meal at 08:16, 12:40, and settles between them. Waking is marked at 06:52, a ring marks the current time, and the hours before waking and after bedtime are shaded.08:1612:4000:0012:0000:00

Woke 6:52

Estimated from your reviewed meals

Carbs, fat, and fibre

Carbs
142g
Fat
35g
Fibre
18.6g

SAT 29 AUG

  1. Wake
  2. First meal
  3. Body mass79.4 kg · From Apple Health
  4. Outdoor walk52m · 5.1 km · From Apple Health
  5. Caffeine

1h 6m in daylight

1h 24m after waking

Illustrative day. Not a real person’s data.
The Ritmai companion

Built around the way your body actually lives

The core iOS surfaces, and what each one is for.

Temporal model

Your day as an unfolding continuous wave

Food is an event in time. Ritmai pairs your meal observations with wake anchors, descriptive energy and protein, and a macro breakdown. Set goals of your own if you want them, and see where each day landed—no streaks, no judgment.

  • 24-hour continuous timeline with wake & meal anchors
  • Descriptive energy, protein, carbs, fat, and fibre
  • Quiet learning observations earned across repeated days
Descriptive nutrition

Capture meals with context, not judgment

Snap a photo or type what you ate. Ritmai generates honest nutritional estimates with transparent confidence ratings that you review, adjust, and confirm before saving.

  • Photo or text capture with transparent confidence rating
  • Editable meal descriptions, timestamps, and macro estimates
  • Every saved observation exportable, and erasable, from inside the app
Apple Health & timing

Connect wake, meals, and sleep timing

See your natural daily arc from morning wake-up to evening bedtime. On iPhone, Ritmai can read sleep and body signals from Apple Health with your permission.

  • Circadian day-arc rail showing wake, first meal, last meal, and bedtime
  • Apple Health sleep, workouts, daylight and body mass, read on iPhone with your permission
  • One dedicated European database, no advertising engine, no data sold
The Ritmai difference

A learning companion, not a tracker

Designed around biological realities rather than gamification and guilt.

Descriptive, not prescriptive

Calories and nutrients are descriptive facts to learn from. Goals are yours to set, change, or leave off—never a quota, and never a reason to shame you.

24-hour temporal rhythm

Food is an event in time. We orient your eating against your natural sleep-wake and circadian cycle.

Private by architecture

Ritmai creates no account merely because a page loaded, and needs no email address, name, or password to start. Your meal photos are never stored against your account, and a copy of your data will not contain one.

Honest provenance

Every read says which rung it stands on — Waiting, Building, or Emerging — and Emerging is the last one. Nothing ever becomes proven. Where a number came from is labelled separately, because that is a different question.

Privacy Promise

Your biological data belongs to you alone

Ritmai does not operate an advertising engine, does not sell what you do, and puts no third-party telemetry in the web app. What you save is filed under your account in a database dedicated to Ritmai, in Frankfurt — and the app will hand you a copy of it, or delete all of it, without asking us.

Read our full privacy policy →

Ritmai is on the App Store

Free on iPhone. Snap, say, or type a meal, and see the day it belongs to.

Download on the App Store

Or hear what we are learning about body rhythms.