🏆Among Education apps bottom 0% by installs gained this week (1724 peers growing)
🛠Updatesdormant · updated 1790 days ago
Installs since launch
+4 installs
since Oct 9
Update history
1.0.8Dec 17, 2021 · seen Oct 22, 2026
Fix some bugs in Android 11
Only the current version so far — new entries appear as the app ships updates.
Doppler Effect is an education app by José Antonio Gómez Tejedor with 10,000+ downloads (about 20K estimated). Released Feb 1, 2016. Install growth, rank history, SDKs and ad networks.
From the store listing: “Doppler Effect. Frequency measurement: error less than 0.04%.”