Hexen is a virtual modular eurorack synthesizer for your phone or tablet with over 50 module types to choose from. Full instructions can be found here: silicondroid.com/hexen/hexen_user_manual.pdf Simply double click any synth module to zoom in and out. Controls and patch cables are all simply tap and drag when zoomed in. 48Khz DSP signal engine and 3D rendering engine gives you a very flexible, capable and fun instrument right in the palm of your hand. Play and have fun shaping your own analogue soundscape and then mastering it down onto the built in stereo tape recorder. This free version allows you to play with all available modules and even export audio using the TAPE module. The free version is limited: you can't save your racks. You can upgrade with an in app purchase to activate rack saving as *.hxn files.