About this app

In this free practice you will have an electronic musical instrument with which you can produce sound waves at different frequencies. It will also have a computer that allows you to see the wave generated by the musical note and observe its amplitude and frequency.

Audience growth

Ratings growth

Steady

7-day gain +0

Ratings / day 0.0

30-day gain +0

US rating-count history

0 ratings

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