Current version: 5.0, last update: 7 years ago
First release : 22 Dec 2010
App size: 4.3 Mb
With Old Diapason, you can have in your pocket the 5 most used tuning forks: A3 392 Hz, A3 415 Hz, A3 421 Hz, A3 430 Hz and A3 440 Hz. Retina display compatible, universal application (iPhone, iPod touch and iPad).