Keyboard: Harmony Maker

Name: Keyboard: Harmony Maker
Author: SINCLAIR SYSTEM

SINCLAIR SYSTEM

⬇ 1,000+ downloads

Est. actual: 2,561

Free

Released: Aug 13, 2025

IAP: $0.49 per item

Contains ads

Signals

3 this week · 2 positive · 1 warning All of this week's signals →

📈Last 7 days +152 installs — 55% slower than the week before (+336) · 19/day since Oct 8
🏆Among Music & Audio apps top 12% by installs gained this week (138 peers growing)
🛠Updates actively updated · updated 22 days ago

Installs since launch

+488 installs since Oct 8

Update history

1.8.0 Oct 19, 2026 · seen Oct 24, 2026

Fixed a crash affecting some devices running Android 9 or 10.

Only the current version so far — new entries appear as the app ships updates.

Keyboard: Harmony Maker is a music & audio app by SINCLAIR SYSTEM with 1,000+ downloads (about 2.6K estimated). +152 installs in the last 7 days. Released Aug 13, 2025. Install growth, rank history, SDKs and ad networks.

From the store listing: “Practice keyboard with just intonation, transposition, and more”