A workout tracker for iPhone and Android: a set goes down in two taps, and the charts show whether you are getting stronger
This one does a single job: a set goes down in two taps, and the weights and reps turn into strength charts on their own, with no formulas to keep up. They answer one question: am I getting stronger?
Home
Start your next workout from here, and see how many sessions you have done this week and how long your streak has run.
Exercise
See how the movement is done, with the muscle it works lit up, so you get an idea of the muscle group before you go looking for a video.
Workout
Type in the weight and reps, add warm-up and drop sets, and the rest timer starts on its own.
Analytics
Pick any exercise and see whether you are getting stronger, by best weight, total volume or your estimated max, over whatever period you want.
Photos
Take a progress photo from the front, side or back, and put any two side by side to see what has changed. They stay encrypted on your phone, and back up to your own iCloud or Google Drive if you turn that on.
Measurements
Log your weight by dragging a ruler with your thumb, then track your chest, arms, waist and thighs, or anything else you want to measure, and watch it all change on one chart.
Timed to when a person actually turns up, not to the clock.
An admin screen where you write the message, pick who gets it (everyone, or filtered by what they do in the app), see how many that is before you send, send it now or on a schedule, and see what came back afterwards.
Sign in on a new phone, iPhone or Android, and the history, the programme and the settings are already there. Nothing is tied to the handset it was logged on.
Subscriptions, a one-time purchase, and the paperwork behind both, in either store. Our server decides the access, so a purchase in one store opens the same account on the other phone.
The product decisions, the design, the iOS and Android apps, the Laravel backend, the admin, the subscriptions and the release. We set the price, answered review in both stores and wrote the consent flow ourselves, so none of it is theory when we plan the same work for someone else.
Six decisions that shaped the product, and what each one was for
Most people who lift already keep a log: notes, a spreadsheet, a paper notebook. The apps that could replace it grew feeds, challenges and coaching offers to reach every audience at once, and lost the one job in the process.
We took the narrow side: log a set, see whether you are getting stronger, nothing else.
A narrow audience is cheaper to reach, easier to keep, and it tells you what to build next.
Every exercise page has a button that opens a YouTube search for that movement. There are already thousands of good demonstrations and none of them cost us anything to keep current.
The budget went where nobody else had spent it: the movement drawn with the working muscle lit, which means most of the time nobody needs the video at all.
Deciding what not to build is what let two people ship this in nine weeks.
Paid installs cost money every time. A finished session sends as a link that opens in a browser, so whoever gets it sees the workout without installing anything, and the invite link works the same way.
Friends then see each other's sessions and latest records. Training where someone you know is watching is the oldest retention mechanic there is.
Everyone picks what is visible: nobody, the people they follow back, or anyone with the link. That control is what makes people willing to share at all.
A streak is a retention mechanic, and it only works while it survives. A daily one breaks the first time someone takes a rest day, which is week one for anybody training to a plan, and the habit usually goes with it.
Ours counts weeks: hit the number of sessions you planned and the week counts.
It survives a normal training year, which is the horizon a subscription needs.
A stall is when people stop coming, and most of them do not spot it themselves.
The app watches the main lifts and speaks up as soon as the numbers stop rising, then once more, more directly, if nothing has changed a month later.
That turns a quiet drop-off into something the person can act on, which is the cheapest retention there is.
Push is the only way to reach somebody who has stopped opening the app, so the app spends it carefully.
Reminders go out around the time a person usually trains, not at a fixed hour, and if they stop coming a short run of messages follows over the next two weeks. Nothing goes over one a day or four a week.
An app that nags gets deleted, and then there is no channel left at all.
Three places, shared by both apps, and nothing moves between them by accident
ON THE PHONE
The key never leaves the phone.
ON OUR SERVER
No photos, ever. Nothing crosses between people: one customer never sees another customer's data.
IN YOUR OWN CLOUD
Yours, not ours.
That was the test for anything that shipped: does it get the set logged quicker, or does it make the answer (is this working?) easier to see.
Colour, type, spacing and motion live in one place in code, and every screen reads from it. Changing the accent colour, the spacing or a typeface is one edit rather than the same edit repeated on every screen. That is what stops a restyle after launch turning into a rebuild.
The server holds the data and every screen asks it for what it needs, but the workout you are in stays on the phone and goes up later, so a dead connection never costs a set.
We rename movements and merge duplicates as the library grows, and every past workout still points at the right exercise. Any product with a catalogue meets this sooner or later: rename a dish, merge two products, and every old order still has to mean what it meant.
Everything the stores check was built in from the start rather than added at the end, because a rejection lands at the worst possible moment, when the launch date is already set. Ads, subscriptions and each store's own paperwork were designed around the rules: what we declare about the data matches what the app actually collects, and nothing tracks anyone before they have said yes.
iOS went through review first and was live in June 2026; Android went live on Google Play on 7 September 2026. Android took 17 days because it was a port, not a second product: everything but the screens already existed, and the same tests had to pass.
The lines marked Premium are what the subscription opens
A training week assembled from your own plan.
A library where a movement is recognised by its picture.
Everything between the first set and the last.
Whether strength is rising, flat or falling.
The part a strength chart does not show.
The data follows the person, not the device or the platform.
Everything on this page is in your pocket in about a minute. Log a set, watch the timer start itself, and see what the charts do after a week. The log, the timer, the charts, the measurements and the photos are free.
The product decisions, the design, the app, the backend, the panel behind it and the release. One team, one counterpart, from the first conversation to the update after launch.
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