About this app
ト音記号の問題、シャープの問題、フラットの問題、ヘ音記号の問題、ハ音記号の問題をご用意してます。 初学者向けに１問１答式で、7問ずつ１セットで解答できます。
Latest release
What’s New
Version 3.1
Sep 19, 2022
バグの修正、解答問題数の表示、広告バナーの配置の修正
Audience growth
Ratings growth
7-day gain
+0
Ratings / day
0.0
30-day gain
+0
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
Current
Free
Historical low
Free
Paid → free
0×
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 19, 2026 · 10:01 AM Free
Screenshots
