Remember settings of your gym machines and recall them via QR code and track progress.
Gym Machine is a small web app for your phone. Scan the QR code or barcode on a gym machine and it shows your saved seat and lever settings, weight, sets and reps. The first scan of a code lets you enter them; every later scan opens them straight away. It works completely offline, which helps in basement gyms with no reception.
Open the app: https://blablubbbb.github.io/gym_machine/
- Live scanning of QR codes and common barcodes (EAN, Code 128 and others) with the phone camera, or from a photo
- Any code works: the app only uses it to recognise the machine, whatever the code links to
- Per machine: name, weight, sets, reps, any number of settings (seat, back rest, lever …) and notes
- “Log today” keeps a history of what you lifted; a wrong entry can be removed with ✕ (and restored with Undo)
- Rest timer between sets: one default rest time (90 s unless you change it), optionally a different one per machine. Vibrates and beeps when the rest is over and keeps the screen on while it counts down
- Share button with a QR code of the app's link, so friends can scan it straight off your screen
- Machines without a code can be added by hand; a code can be linked to a machine later
- Works offline after the first visit and can be installed on the home screen
- German, English and Simplified Chinese (picked from the browser's preferred languages, changeable under Data and settings)
- Backup export and import as a JSON file
- Open https://blablubbbb.github.io/gym_machine/ once while you have internet.
- Tap the ⋮ menu → Add to home screen (or Install app).
- Start Gym Machine from the home screen. From now on it works without internet.
On iPhone, open the link in Safari → Share → Add to Home Screen. Live scanning of QR codes works there too; barcodes need Chrome on Android.
All data stays on your phone, in the browser's storage of this app. Nothing is sent anywhere: there is no server, no account, no tracking, and no fonts or scripts are loaded from other sites. The camera image is analysed on the phone and never saved or uploaded.
Because the data lives only on the phone, clearing the browser data or uninstalling the app deletes it. Use Data and settings → Export backup now and then.
Gym Machine merkt sich die Einstellungen deiner Fitnessgeräte. Scanne den QR-Code oder Barcode am Gerät, und die App zeigt Sitz- und Hebeleinstellungen, Gewicht, Sätze und Wiederholungen, und hat einen Pausentimer zwischen den Sätzen. Sie funktioniert komplett offline. Alle Daten bleiben auf deinem Handy; es gibt keinen Server und kein Tracking.
Installieren: Link einmal mit Internet in Chrome öffnen → ⋮ → Zum Startbildschirm hinzufügen.
Plain HTML, CSS and JavaScript, no build step. Serve the folder with any static web server, for example python3 -m http.server, and open http://localhost:8000.
index.html,style.css,app.js– the appsw.js– service worker that stores the app on the phone for offline use. Raise theCACHEversion whenever you change a file, otherwise phones keep the old version.manifest.webmanifest,icons/– home screen installationvendor/jsQR.js– QR decoder for browsers without the built-in barcode scannervendor/qrcode-generator.js– draws the QR code on the share screen
To add a language, copy the en block in TEXT at the top of app.js, translate it, add an <option> to #langSelect in index.html and a date locale to LOCALES.
- Gym Machine: MIT, see LICENSE
- jsQR 1.4.0: Apache License 2.0, see vendor/jsQR-LICENSE.txt
- qrcode-generator 2.0.4: MIT, see vendor/qrcode-generator-LICENSE.txt
- Barlow fonts: SIL Open Font License 1.1, see fonts/OFL.txt