I am Synth Free arrives, and, as it says, it's free. Which is an interesting move as the full version is only $0.99.
Here's the app's description ...
Who are you? I am Synth!
the simplest and most powerful synth app ever!
i have no knobs,no technical terms but just only cute icons waiting for your tap and flick.
- oscillator: sine,saw,pulse,noise
- low pass filter
- LFO for pitch : sine,saw,pulse,noise
- envelope for amplitude : attack time,release time
- delay : up to 2 sec , it can be also used for looper
- keyboard : shake for ribbon controller mode