Sonic Synth vs ab vortEx X

Sonic Synth is very capable FM Synthesizer app with 3 oscillators. Every oscillator is independent and can generate 4 wave forms. The app works with 44100 Hz sample rate so the sound quality is great. Core MIDI - support for MIDI keyboards via USB The touch keyboard is also very responsive and dynamic - feels like a real instrument. Keys are big enough. The last wave form is our secret algorithm for string sound also generated by the oscillators. Variety of sounds can be created and even changed real time while you are playing using the setting of the 3 oscillators of the synthesizer. Sonic Synth main features:
- 3 oscillators
- 4 wave form types for every oscillator
- volume, modulation, tone and detune for every oscillator
- envelope filters (attack sustain release)
- multitouch
- fast and usable piano keyboard 
You can now use your phone or tablet as a recording instrument.

'ab vortEx X' for iOS is a 'Light', stereo-only version of 'ab vortEx', an abstract spacetime designer for creating infinite variations of reverberations using our Spatial Audio algorithms under the hood. 'ab vortEx' for iOS comes as an AUv3 Plugin and is compatible with any iOS host that supports AUv3 (e.g. Garageband). The plugin contains a minimalist interface, compatible with Touch Screens - as you move through the screen, you can control how the algorithm works and how the reflections of the sound spread through time and space. 'ab Vortex X' also works as a stand-alone application (make sure you wear headphones or use a soundcard). 'ab vortEx X' supports Stereo signals and contains the most critical controls of 'ab Vortex' (Space, Time, Viscosity and Volumes) for providing quick ways to manipulate your sound.ab vortEx' for iOS works with Mono and Stereo signals.