Developer Per Loenicker has released CHAiOS Synth 2, an update to CHAiOS that has been ‘beefed up’, while retaining its uncomplicated interface. 

Here’s what’s new:

• New bandlimited wavetable oscillator
• New virtual analog 4-pole lowpass filter
• Additional ADSR-envelope for the filter frequency
• 3 modes for filter resonance
• 16 step /3 track drum-sequencer
• More parameters for reverb and delay
• Adjustable oscillator volume
• Improved, streamlined design

Features:

• 16 Step melody generator with unique random algorithm
• Wavetable oscillator with three different waveforms
• VA lowpass filter with variable resonance and cutoff frequency
• Delay- and reverb-effects
• ADSR envelopes for controlling amp and filter frequency
• Support for Audiobus and Inter-App Audio

Here’s a video demo:

CHAiOS Synth 2 is available for US $4.99. The original CHAiOS is available as a free download.