A workout-log PWA you launch from the iPhone home screen and use completely offline. It is built around one loop and nothing else: look at what you did last time, then do the same or a little more.
Every exercise shows last time's sets, reps and weight, and while today's sets are still empty you can prefill them with one tap. 28 exercises across 6 muscle groups (chest / back / shoulders / arms / legs / core) come preset, and groups and exercises can be added, renamed and deleted. The progress chart switches between volume, set count and rep count, and always overlays your body weight as a dashed line on a second axis.
There is no account and no server. Your log is stored only in this device's localStorage, and you can export and import it as TSV, which opens directly in a spreadsheet.
Displaying this app requires JavaScript and WebAssembly. GitHub repository
日本語: fitness-memo（筋トレメモ）は、iPhone のホーム画面から起動して完全オフラインで動く筋トレ記録の PWA です。アカウント登録もサーバ通信もなく、記録は端末の localStorage にのみ保存します。