LessonOS: Attendance Tracker is a health & fitness app developed by cjtoolseram.
Download Statistics
LessonOS: Attendance Tracker has been downloaded 56 times. In the last 30 days, the app was downloaded 12 times.
User Ratings
The app has no ratings yet.
App Information
LessonOS: Attendance Tracker is FREE to download. The APK download size is 3.05 MB. The latest version available is 1.5.2. The last update was on July 21, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play April 2026.
Description
LessonOS is a simple, offline attendance and student management app for trainers, coaches, and small studios. Track class attendance, check students in with a single tap, schedule recurring classes, and manage credit packages — all on your phone, with no account and no internet required.
Built for instructors who'd rather teach than fight a spreadsheet, LessonOS keeps your students, classes, and attendance organized in one fast, private app.
WHO IT'S FOR • Martial arts schools — kungfu, karate, taekwondo, BJJ, and judo dojos tracking student attendance and class credits • Coaches and private tutors — sports, music, dance, and academic instructors managing class rosters • Gyms and fitness studios — yoga, pilates, and personal training studios checking members into classes • Any small training business that wants to replace a paper notebook or spreadsheet — without a $40/month subscription
KEY FEATURES • Student management — add, search, and organize students with status and per-student analytics • Recurring class scheduling — set up weekly classes (e.g. Tue/Thu/Sat) and auto-generate every session • One-tap check-in — tap to check students into a class, with undo for mistakes • Attendance tracking — see who attended each class and keep an accurate roster • Credit packages — sell class passes (10-class card, 20-class card) and deduct credits automatically • Leave requests — record and approve student absences and make-up credits • Attendance analytics — spot who's showing up and who's drifting away before they quietly stop coming • CSV import & export — migrate from a spreadsheet in minutes • Backup & restore — keep your data safe with Google Drive backup • Multiple branches — manage more than one location or training center • 7 languages — English, Chinese, Japanese, Spanish, Malay, Indonesian, and French
WHY LESSONOS • Offline-first — works with no internet; your data stays on your device • No account needed — open the app and start; no sign-up, no email, no password • No subscription — free for up to 15 students, then a one-time unlock for unlimited. No monthly fees, ever • Private by design — your student data is stored locally, never held hostage in someone else's cloud • Fast and lightweight — built for trainers and instructors, not accountants
Whether you run a martial arts dojo, coach a sports team, teach private music or dance lessons, or operate a small fitness studio, LessonOS gives you a clean, offline tool to manage students, take attendance, track check-ins, and sell class credits — without the overhead of bloated studio-management software.
Download LessonOS and bring order to your classes today.
Recent changes: - Target Android 16 (API 36) — Play target-API compliance - Play Billing Library 8.0.0 — Play billing compliance - No functional changes
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