Onai

Onai 4.0 · Personal nutrition

One Pro subscriber. One tree.

Nutrition tracking that adapts to you.

Photograph a meal and Onai estimates calories, macros and nutrition signals. Log what you eat, correct anything it gets wrong, and get next-meal ideas shaped by your goals and routine.

Available now
on iOS and Android

New users start with 3 starter scans. After that, get 1 free scan every day.

Onai home screen showing Carina's daily calories, macros and cycle pattern
Works with
Apple Watch activity
Apple Health
Health Connect
Apple Watch data is read through Apple Health when available.

Onai for women

Coming soon

Your body changes. Your nutrition should adapt with it.

Onai can support regular cycles, irregular cycles, PCOS, perimenopause and postmenopause with practical food ideas and optional weekly check-ins. Your context is private, editable and never used for advertising.

Regular cyclesOptional phase context for food ideas shaped around appetite, energy and comfort.
Irregular cyclesNo automatic phase guessing. Optional energy, sleep, mood and appetite check-ins shape the week instead.
PCOSSustainable, preference-led food ideas without prescribing a restrictive or one-size-fits-all “PCOS diet”.
PerimenopauseWeekly energy, sleep, mood and appetite context can shape practical suggestions without phase predictions.
PostmenopauseFood ideas can prioritise protein, fibre, calcium-rich foods and heart and bone health patterns.

What makes Onai different

It understands the context around your food.

Onai does more than count a meal. The context you choose to share shapes the next idea, target, progress cue or place to eat.

01Optional body context
02Meal timing and activity
03Goals and preferences
04Meals you log
What changes for you Food ideas · targets · Onai Coach · progress

Built for real life

Useful from the first scan.

Onai 2.0 connected your scans, preferences, logged meals and reports. Onai 4.0 adds editable results and body context that can adapt with you.

Onai goals and dietary preferences
Personal ideas

Your choices shape every suggestion

Goals, preferences, timing, activity, logged meals and optional body context give Onai the context to suggest what fits you.

Onai nutrition signals on a food result
Nutrition signals

See more than macros

Fibre, sugar, sodium and saturated fat add useful context, while AI confidence and editable results keep you in control.

Onai meal diary
Diary + reports

Your data stays in sync

Edit or delete logged meals and Onai recalculates reports, trends and progress from the data that remains.

What Onai is

An AI nutrition companion for the food you actually eat.

Understand any meal

Use a photo or description to estimate calories, macros and useful nutrition signals without searching a database.

Track what you actually eat

Keep scans in your history, then add only the meals you ate to a diary you can edit.

See patterns, not just numbers

Follow calories and macros alongside weekly habits, protein progress and meal timing.

Know what fits next

Onai Coach uses your diary, goals, preferences and remaining nutrition to suggest a practical next meal.

Simple 3 steps

How it works

Photo, gallery or text
Onai scan screen
1

Scan anything

Use a photo, gallery image, or text entry.

Scanned vs eaten
Onai diary with scanned and eaten meals
2

Log what you ate

Keep scans separate from meals.

Weekly progress
Onai progress screen
3

Watch progress build

See goals, habits, macros and reports.

What Onai does

Food tracking that gets more useful the more you use it.

Instant scan 01

Take a picture of a dish.

Get calories, protein, carbs and fat without barcodes, manual entry, or database scrolling.

Diary 02

Keep scans separate from meals.

Scanned foods stay in your history. Logged meals are the foods you actually ate.

Progress 03

See how your week is going.

Track logging, protein, balance and habit progress across the week.

Explore 04

Find food that fits.

Use restaurant and ingredient finder tools when you want options that match your preferences.

Cycle check-in 05

Add cycle context when it helps.

Add optional cycle context once. Onai estimates phase changes from your latest check-in and can remind you when it may need updating.

Recipes 06

Turn scans into recipes.

Get ingredients and steps, then edit the recipe before you cook.

Weekly Report 07

See your week at a glance.

Review calories, protein, carbs and fat across the week and spot patterns early.

Onai Coach 08

Plan what fits next.

Remaining calories, protein, timing, goals, preferences and your diary shape a practical next-meal idea.

Health & Activity 09

Adjust targets with activity.

Connect Apple Health or Health Connect so Onai can use active calories and steps to update your daily target.

Evidence-based

Based on decades of scientific research.

[ 1 ]

A 2024 systematic review supports pairing self-monitoring with feedback, while noting that more research is needed to identify the most effective feedback formats.

[ 2 ]

The Mifflin-St Jeor equation provides a well-established estimate of resting energy needs.

[ 3 ]

Protein intake around 1.6 g/kg/day was sufficient to maximise resistance-training gains in fat-free mass.

[ 4 ]

A systematic review found that energy intake tends to be higher in the luteal phase than the follicular phase.

[ 5 ]

A 2024 review found potential benefits from Mediterranean-diet interventions for weight, blood pressure and lipid markers after menopause.

Gonçalves, Moreira & Santos AIMS Public Health. 2024;11(1):110-129.
[ 6 ]

The 2023 international PCOS guideline recommends sustainable healthy eating and physical activity, with no evidence that one diet composition is superior.

Tree commitment

One Pro subscriber. One tree.

We are aware of the environmental impact of using AI. For every new Onai Pro subscriber, we pay to plant one tree in Yucatán, Mexico.

Yucatán Restoration in Mexico Tree planting
Planting region Yucatán, Mexico
12 trees pledged so far

Regional view of the restoration area. Exact planting locations are assigned when each tree pledge is fulfilled.

Vienna roots

Making healthy eating easier to keep up with.

Onai is built to make nutrition tracking easier to use every day. The goal is simple: less manual work, clearer food choices and better habits over time.

Impact Hub logo Community Impact Hub Vienna

Part of Impact Hub Vienna.

Onai is part of the Impact Hub Vienna community. You can find us there as we build the app and keep improving it.

Healthy habits Everyday nutrition Accessible tools

Download Onai today.

Start with 3 starter scans. After that, get 1 free scan every day. Upgrade when you want unlimited scans and deeper reports.

New users start with 3 starter scans. After that, get 1 free scan every day.