Rapp Recorder (2019)

Rapp was my first experience using Apple's "AVAudioEngine" framework:

https://developer.apple.com/documentation/avfaudio/avaudioengine

This allowed me to write custom code for effects, including multi-band EQ.

Rapp was also an opportunity to create and produce beats - I made 100 for this app.

Example beats available here: https://soundcloud.com/rapprecorder/rapp-2-instrumental

This app is written in Objective-C.