How to make your own workout log (built for sweaty thumbs)
~6 minutes · no code · free to start
Gym apps have become social networks with a barbell attached. Between sets you don't want a feed — you want to know what you lifted last week, log this set with two taps, and watch the rest timer.
This log does exactly that and nothing else, in a dark theme you can read between sets. And because it's yours, when your training changes, the app changes with one sentence.
What you'll end up with
- ✓Your workouts and exercises, with last session's numbers beside each
- ✓Two-tap set logging with big buttons and a rest timer
- ✓Automatic PR detection (with a little celebration)
- ✓Progress charts per exercise and a training calendar
The five steps (same for every app)
- 1
Describe it
Type what you want in plain English — like you'd explain it to a friend. No technical words needed. Every guide below gives you a ready-made description you can use as-is or edit.
- 2
Check the plan
Kyntra replies with a short plan in plain English: what it understood and what it's about to build. If it got something wrong, just say so. Happy? Hit Approve. (You can switch on Auto later to skip this step.)
- 3
Watch it build
About a minute later your app appears in the preview panel — a real, working app, not a mockup. Click around in it right away.
- 4
Ask for changes
This is where Kyntra is different from hiring anyone: changes are just sentences. "Make it blue." "Add a delete button." "That chart is confusing, make it simpler." Each change takes about a minute, and every version gets a quality grade in the header — Kyntra checks its own work for the mistakes AI builders usually make.
- 5
Publish it
One click on Publish gives your app a real web address you can send to anyone or open on your phone. Change something later? Publish again — same address, new version.
Your ready-made description
This is the exact text the button below pastes for you — read it, edit anything, or use it as-is.
A workout log for the gym. I can create workouts (e.g. Push day, Leg day) with exercises; when training I log sets with weight and reps, with a rest timer between sets. The app remembers what I lifted last time and shows it next to each exercise. Personal records are detected and celebrated. A progress tab charts my top set per exercise over time, and a calendar shows training days. Quick to use with sweaty thumbs: big buttons, plus/minus steppers for weight and reps. Dark, gym-friendly design.
Make it yours — things to say next
After the first build, changes are just sentences in the chat. For example:
You say: “Add supersets — pair two exercises with one shared rest timer”
→ Your actual program, supported
You say: “Add body-weight tracking with a weekly graph”
→ The whole picture
You say: “Rest timer: 90 seconds default, buzz when done”
→ No more accidentally scrolling for 6 minutes
You say: “Add plate-math: show which plates to load for the target weight”
→ The tiny feature you'll use every session
Common questions
Does it work offline at the gym?
Once the page is open it keeps working — everything is saved on your phone. Add it to your home screen and it feels like a native app.
Do I need to know how to code?
No. You describe, Kyntra builds. You never have to read or touch code — though it's all there if you're curious.
Is it really free?
Yes — free to start, no card. The free plan includes 5 apps and 25 builds a day, which is plenty to build and polish something real.
How do I know the app is any good?
Every version is audited by Kyntra's 17-check quality engine — the same kind of review a senior engineer would do — and stamped with a letter grade you can see in the workspace header.
Five minutes from now, this exists.
Free to start · no card · live app in about a minute