About this app
Let your kid use the phone as a musical instrument producing sounds when waved in the air like when ringing a bell! A cat meowing, a dog barking, a bird signing, and a piano and a laterna (old barrel music box) playing notes when phone is waved or playing whole melodies by their own in the pauses when not waved. Melodies are also automatically continued if the kid plays, intentionally or unintentionally, the first three notes of a melody. Press the "?" button available on all screens to see a video of a child demonstrating how the app is used. Let the ding-dang-dong begin! Copyright notices: The piano sounds are created by and copyright of Lawrence Fritts at the University of Iowa.
Latest release
What’s New
All instruments are now free!
Audience growth
Ratings growth
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
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 24, 2026 · 11:30 PM Free
Screenshots
