The workout app
built into your gym.
Free for every member.
One sticker per machine, mapped to your real equipment — a member scans it and the right exercises open, last session's weights already filled in. Your web dashboard shows which machines get used and when, plus every problem a member reported.
Free for your members, forever · 3 months free for you · no contract
How it works
Three steps. About an hour of work.
No hardware, no installation, nothing your staff has to learn.
Send us your email — we handle the rest
Fill out a short form. We reach out to ask about your gym — how many machines, where to ship. We prepare the stickers and deliver them to your door, ready to assign.
Stick it, scan it, pick the equipment
Stick a sticker on a machine where members can see it. Scan it with our free app — a catalog with photos pops up, just pick the match. Or type the sticker number on the web dashboard. Repeat for every machine — the whole gym takes under an hour. Made a mistake? Reassign any sticker anytime.
What happens next
The app, free forever
Scan a sticker → every exercise for that machine, with animated form guides and last session's weights already filled in. No paywall, no upsell, ever.
Programs shared by QR code
Build a routine from 300+ exercises with step-by-step guides, then share it as a QR code. The member scans it and the whole plan lands in their app.
The part you can't see from the floor
Broken-equipment reports straight from members, how new-versus-returning is trending, and when your floor is genuinely full. Usage per machine too, if you want it.
Then an estimated €0.99 per sticker / month — about €39.60 for a 40-machine gym. Final pricing is set after the pilot; no contract, cancel anytime.
The app your members get
A real workout app. Free for every member.
Scan the machine. It knows which one.
Point the camera at the sticker and every exercise for that machine loads, last session's weights already filled in. No searching, no scrolling a generic exercise list — it's the machine they're standing in front of.
Every session they've ever done.
Full history, every set, every personal best, and the seat and cable settings for each machine. Works with no signal, so the basement free-weights room isn't a dead zone. Free forever — no paywall, nothing your members get nagged to buy.
One QR code, a whole program.
Your trainers build a routine and share it as a QR code — the member scans it and the full plan appears in their app. Every exercise comes with an animated form guide, so nobody is guessing at technique.
Your dashboard
Set it up once. Check it when you need it.
Everything on one screen.
Scans, active members, peak hours, top equipment — filtered by location or date range. Open it when you're deciding something and ignore it the rest of the time. It doesn't need managing.
The trends you can't feel day to day.
A machine's decline is invisible week to week and obvious across six months. So is member drop-off. The dashboard keeps the long view so you don't have to hold it in your head.
Your members tell you what's broken.
A member scans a machine, taps report, and it lands here — machine and sticker already identified, reporter anonymous. Acknowledge it, mark the machine out of service so anyone who scans it sees that instead, and close it once it's fixed.
Beyond the app
What you can't see from your floor.
You know your gym better than any dashboard does. This is the part you can't walk past and notice.
Members report it. Anonymously.
Most people never mention a broken cable at the desk. They just quietly stop using that machine. Now they can report it from the app in two taps — anonymously — and it lands in your queue.
New faces vs regulars.
Every period splits into members training with you for the first time and members coming back, plotted day by day. You can walk your floor and see it's busy. You can't see whether the same people are filling it.
When your floor is actually full.
Peak hours split by weekday and weekend, and which machines carry the load. Useful for staffing and class scheduling — and for checking whether the 6pm crush is as bad as it feels.
FAQ
Common questions.
Yes — they download the free Muscle Diary app once. The first time they scan a QR code, they're taken straight to the App Store. The whole install takes under a minute. After that, every scan opens the app directly with that machine's exercises already loaded and their last weights pre-filled.
Yes. Members can search any exercise manually, log workouts from scratch, and track their full history without ever scanning a sticker. QR codes just make it faster — scan instead of search.
Contact support and we'll add it within 48h. Pilot partners get direct access to our team — no ticket queue, no waiting weeks. If you have a machine we haven't seen before, we want to know about it.
Because a generic app doesn't know your gym. Ours is mapped to your actual machines — scan the sticker on your leg press and that machine's exercises load, with the member's last weights and even their seat and cable settings already filled in. No searching a list of 300 exercises to find the one they're standing in front of. That's the difference between an app they download and an app they keep using.
We're estimating €0.99 per sticker per month — about €39.60 for a 40-machine gym — but final pricing is set only after the pilot ends, and you'll get advance notice before any billing begins. No auto-contract, no surprise invoice — you decide whether to continue. Your stickers stay on the machines and keep working either way.
Cancel anytime. After the pilot, billing is monthly with no minimum term and no annual lock-in. You're not signing a contract today — you're starting a pilot.
You see anonymised usage per machine — how often each piece of equipment was scanned, when, and usage trends over time. Members own their personal workout history and you cannot see individual logs.
You get a full export of your usage data before anything is deleted. Your equipment assignments and QR sticker IDs are yours — they don't become useless the moment you leave.
The gym your members keep coming back to.
A workout app built into your gym, free for your members forever. Three months free for you, and about an hour to set up your whole floor.
QR workout tracking for gyms
Muscle Diary turns any gym machine into a smart workout station with a single QR sticker. Members scan to log sets, track progress, and access full exercise instructions — no manual entry, no guessing. As adoption grows, you build a real picture of how your floor is used.
Equipment usage analytics
Muscle Diary gives fitness studios and gym operators real usage data by machine, by time of day, and week over week — plus broken-equipment reports sent straight from members. Confirm what you already suspect about layout, maintenance and new purchases, with numbers behind it.
Free workout app for gym members
Every member at a Muscle Diary partner gym gets a free workout tracking app. No subscription, no upsell. Scan the machine, log the session, track personal bests — and share full training routines as a QR code. Available on iOS and Android.