4. Modular Synthesizer
Once you know the basics of piano, you can use that knowledge to play Modular Synthesizer. It’s a powerful app that mimics an analog synth extremely well, even down to plugging cables into a rack. While based on a keyboard, synth-playing is a whole different ballgame. There is a learning curve, but once you get the hang of it, it’s amazing the kind of sounds you can create with this one app. The basic version is free to use, with additional features and sounds available via in-app purchases. Download it here.