Teach more.
Track less.

Lessons, attendance and payments in one place. For anyone who teaches, and the families who learn.

A lesson for Isaac, Saturday 2 to 3 pm, repeating weekly, with a Mark Attendance button
Payments: two credits, one lesson attended, balance plus one
The Lessons tab: August 2026 as a month grid, with dots under the teaching days
Schedule

Set it once.
It repeats.

Add a lesson, make it weekly, and the term fills itself in. After class, one tap marks attendance.

Isaac’s student page: subject Piano Grade 8, and an upcoming Saturday 2 pm lesson that repeats weekly, 7 lessons
The lesson sheet: starts and ends on 1 August, repeats weekly, and a Mark Attendance button
Payments

Credits,
not chasing.

A payment adds lesson credits. Each lesson attended uses one. Teacher and family see the same balance.

Payments for one student: 2 credits, 1 attended, balance plus one, and a ledger of each entry
Calendar

Turn it sideways.

Upright, it’s your month, with a dot on every teaching day.
Turn your phone and it becomes a week diary.

Upright: the month view, with a dot under each teaching day
Sideways: the same calendar as a week diary, Monday to Sunday, each lesson in its time slot, with two clashing lessons on Thursday in red
Notifications

Everyone stays
in tune.

Schedule, reschedule, mark attendance or record a payment, and linked students and parents know straight away. Two households? Both hear.

Notifications: Balance in debt, Isaac’s balance is now in debt; Account linked, Isaac linked their account
One account

Teacher or student.
Switch any time.

It’s one switch in Settings. A piano teacher learning French, or a parent who tutors on weekends, needs just one login.

Settings, with the Role switch set to Teacher and Student beside it, the Appearance switch, and the website, privacy and help buttons at the top

Born at the piano.

Harmonic started with Isaac’s piano lessons. Then came violin, drums and guitar, then maths and English tutoring. Which weeks were paid? What’s on next? Now one app keeps every lesson straight, for any subject, even a whole class.

Free until you outgrow it.

Every feature on every plan. Pro just lifts the student limit.

What each Harmonic plan includes
Free$0Up to five studentsUp to 5 students Harmonic ProPro$2.99 / monthUnlimited students Student viewStudent$0Free, unlimited, read-onlyRead-only
Students you teach5UnlimitedNone
Schedule and repeat lessonsView
One-tap attendanceView
Lesson credits and ledgerView
Month calendar and week diary
Activity notifications
Switch between teacher and student

Your first five students
are on us.

No forms. No new password.

  1. Download free on the App Store Scan with your iPhone cameraDownload the app
  2. Sign in with Apple or Google
Or open the App Store ›