B flat between C and D? – Sing-inTuna Review

Unforgivable lack of basic testing and quality control spoils this app. The app displays the flatted note below D as B flat. Nothing is more frustrating than trying to hone in on a C note and going the wrong way because display is wrong. I've gone back to AppStore to find a usable, higher quality app; this one is too frustrating due to basic errors!
Review by Chip Grandits on Sing-inTuna.