iOS · TestFlight beta

Your training, adjusted for what you actually ate.

Attu is a gym logger and a macro tracker in one app, and the training plan actually changes when you are eating in a deficit.

500 places · iPhone only · Opens this autumn

Coach

Protein is the gap, not the weights.

Energy balance

Moderate deficit · −0.4 kg per week

Weight trend

Inside the range that protects strength

Why this

Keeping your working weights — that is what protects strength in a deficit.

Protein

Adequate · 6 of 7 days

What it does not know

Two more weeks of weigh-ins before energy balance factors into this.

What is in it

Two logs, and the thing that reads them.

Most apps stop at the first two. The third is why the other two live in one app.

Training

Every session prescribed, with the reason on it — the load, the sets, and what moved them.

Today Upper lower Day 1 · 12 sets left

Nutrition

Calories and macros in the same app, because the training engine is reading them.

Protein 172 g of a 168 g target

Left today 620 kcal

Adaptation

A deficit changes the prescription. The app says so, and says by how much.

The home screen: the coach’s note and today’s session.

Energy balance Moderate deficit −0.4 kg per week

Nutrition

Logging food
made easy

Scan it, photograph it, or say what it was. The training engine is reading the same log.

A man in his kitchen holding his phone over a plate of chicken, rice and broccoli; Attu's camera is framing the meal, with the hint 'Fit the whole meal in frame' below the brackets. — Point the camera at the plate.

BreakfastOats, whey 470 kcal

LunchChicken, rice 640 kcal

DinnerSalmon 810 kcal

SnacksNothing logged yet —

Attu's daily summary: 620 kcal left of a 2540 target, 1920 eaten, and the three macro rings — 172 of 168 g protein, 240 of 340 g carbs, 64 of 56 g fat.

The daily note

The reason

The limit

Go deeper with Axon

Axon reads the same two logs the engine does, and says what it sees — including the part it could not.

Axon's disclosure sheet: 'Why this session' above the reason, and 'What I could not see' above the limit.

Axon is an AI system. It can be wrong, and it is not medical advice.

In the app

Have a look around.

Five surfaces, captured from the build. Pick one.

Today The day in one card — what to train, what you have eaten, and what Axon made of it. Workout Log a set in three taps. The row turns green, the volume adds up, the rest timer starts itself. Food Search it, tap it, done — and the calories left today change while you are still looking. Progress Sessions, volume, measurements and records — what actually happened, not what was planned.

Price

One price. No advertising, nothing sold.

€29.99per year

7 days free, then €29.99 a year. Renews annually. Cancel any time in Settings.

There is no advertising.: Nothing about your food or your training is sold, shared, or used to target you.
There is no free tier.: The app is one thing, paid for once a year, so it does not have to earn its keep another way.
Your log outlives the subscription.: Cancel and your history stays readable and exportable. Nothing you logged is ever rewritten.

Questions

The things worth knowing before you sign up.

Is there an Android version?

No, and there is no plan for one. Attu is an iPhone app and there is no web version.

What happens after the seven days?

It renews at €29.99 a year unless you cancel. You cancel in Settings, not by emailing us.

What leaves my phone?

Your log lives on the device and syncs to servers in the EU. Nothing is sold, and there are no third-party trackers in the app.

Does it work with no signal?

Yes. The whole app works offline, including the session it prescribed for today.

What is the coach, exactly?

An AI system. It can be wrong, and it is not medical advice. The engine underneath it is not an AI — it is arithmetic you can check.

What does it not know about me?

It tells you, on every prescription. Where the data is not there, it says so instead of producing a number.