LessonOS: Attendance Tracker

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 bloated, expensive studio software 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 • 7 languages — English, Chinese, Japanese, Spanish, Malay, Indonesian, and French LESSONOS PRO • Unlimited students, classes and credit packages • Full analytics: 30- and 90-day trends, top attendees • Backup & restore to Google Drive • CSV import and full data export • Kiosk mode for front-desk self check-in • Make-up credits for approved leaves • Monthly or yearly with a 7-day free trial, or a one-time Lifetime purchase 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 • Free to start — up to 15 students, 3 classes and 1 credit package at no cost. Upgrade to LessonOS Pro (monthly or yearly, 7-day free trial) or buy Lifetime once and never pay again • 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. Terms of Use: https://lessonos.app/terms.html Privacy Policy: https://lessonos.app/privacy.html