Luna

Status: In private use while I refine it for a wider release
Platform: An installable web app for phones. Workouts work with no signal, from the first set to the last.
For: Women who strength train, at the gym or at home
Food logging: A photo, a sentence, a barcode, a search or a recipe link, with hawker food built in
Built in: Singapore

Why I built it

I lift, and before Luna I logged my sessions in a general gym app. It measured every set against my best ever, whichever week of my cycle it was. A squat in my luteal phase was being held up against a record from ovulation week, when my body was working differently.

So I built a tracker that knows where I am in my cycle. Every exercise shows what I lifted the last time I was in the same phase, beside my all-time best. Food sits in the same app, including the hawker meals most trackers don’t know.

The problem

Most trackers treat every week the same

Your best ever is the only bar
Today’s set is compared with your all-time record, whatever phase you were in when you set it.
Your cycle lives somewhere else
Periods in one app and lifts in another, and nothing connects how you felt with what you lifted.
Food databases don’t know chicken rice
Most nutrition data is American, so a plate of hawker food turns into guesswork.
Logging food is slow
Search, weigh and pick the right entry at every meal, until it feels easier to stop.

Who it’s for

For women who lift, wherever they train

Women training in a gym
The last session in this phase and the all-time best, side by side for every exercise.
Training at home some days
One tap turns a gym routine into a home one, using the kit you have.
Eating for strength
Calorie and protein targets, and a planner that fills the rest of the day from meals you already eat.
Eating in Singapore
Hawker staples come first in the food lookup, ahead of the American database.

What it does

Inside Luna

Luna: Today — Today
Your cycle day and phase, today’s workout, and one line of guidance for where you are in your cycle.

Luna: Last time, in this phase — Last time, in this phase
Each exercise shows your last session in the same phase beside your all-time best, so a luteal squat is measured against a luteal squat.

Luna: How are you today? — How are you today?
Energy, symptoms, soreness and sleep, in a few taps.

Luna: Patterns — Patterns
Check-ins and sessions set out by phase, with the counts behind every pattern shown.

Luna: Do it at home — Do it at home
Swaps each gym exercise for the closest one your home kit allows: the same movement, working the same muscles.

Tell it what you ate

Type a sentence or take a photo. Luna works out the foods and portions, and you confirm before anything is logged.

Luna: Build my day — Build my day
Fills the meals you haven’t logged yet, staying under your calories and getting as close to your protein as it can.

Luna: Analyse my week — Analyse my week
A plain review of the week’s eating: what went well, what to watch, and what to try next week.

How it was made

Two hands

Luna is built with agentic assistance. The agents wrote the phase engine, the offline storage and the food recognition. The rules about what gets compared, and what the planner aims for, are mine.

The agents’ hand

Working out the cycle day and phase for any date, and snapshotting it onto every workout as it’s logged.
Swapping a gym routine for home kit by movement pattern and muscle, so a fly stays a fly.
Reading a photo, a sentence or a recipe link into foods and portions, through a server so no key ever sits on the phone.
Keeping everything on the phone first, so a workout never waits for a signal.

My hand

Deciding that a lift should be compared with the same phase, and that past workouts keep the phase they were logged in.
Setting the planner’s priorities: stay under calories first, then get as close to the protein target as possible.
Making a skipped workout need a reason, with only being sick protecting the streak.
Putting hawker food ahead of the American database, because that’s what I actually eat.

Where it’s heading

Where it could go

Next on the list is bringing in activity from Health Connect, so walks and classes arrive without being typed in.

Private for now

Should this exist for more people?

Luna is in private use while I refine it for a wider release. If you lift and would like your training to follow your cycle, I’d like to hear from you.

Would you use it?
Tell me how you train and what you track now. It helps me decide what the first public version needs.
Tell me you’d use it
Want something built for you?
I build private tools like this for a family, a team or a single project. Yours would be made around how you work.
See what I make

Why I built it

Most trackers treat every week the same

Your best ever is the only bar

Your cycle lives somewhere else

Food databases don’t know chicken rice

Logging food is slow

For women who lift, wherever they train

Women training in a gym

Training at home some days

Eating for strength

Eating in Singapore

Inside Luna

Today

Last time, in this phase

How are you today?

Patterns

Do it at home

Tell it what you ate

Build my day

Analyse my week

Two hands

The agents’ hand

My hand

Where it could go

Should this exist for more people?

Would you use it?

Want something built for you?

Write to me