Here is a list of some really great apps for producing Chiptune music. Let us know if you can think of some more!

Nanoloop for iPhone combines sequencer, synthesizer and sampler in one package. It provides all functions for creating electronic music from scratch. http://ipadloops.com/gameboy-nanoloop-for-iphone/

MicroSynth is exactly that, a tiny synth based on a wonderful Micro Computer which is now on the verge of being 30 years old! All of the sounds you hear are actual samples taken from a real Micro and all of the sounds were programmed by Pixelh8. I hope you you enjoy making music with this MicroSynth. http://ipadloops.com/free-bbc-micro-computer-synth-app-for-iphone/

NESynth By newforestar co,.ltd NESynth is a synthesizer that simulated 8 bit sound of video games in the 80′s. http://ipadloops.com/8-bit-chiptune-for-iphone/

8Bit Studio – the only circuit bent 8bit SID synth for your iphone! Customize your patterns using the built in step sequencer or play live on the retractable keyboard then bend and distort the sound using the touch contacts! http://ipadloops.com/8-bit-chiptune-studio-for-iphone/

Bleep – Chiptune drum app for iPhone. Draw 16 steps of pitch and wavetable modulation to create chip-tune sounds and effects, then sequence them to make retro video game like beats http://ipadloops.com/bleep-chiptune-drum-app-for-iphone/

SidTracker64 is the ultimate chiptune production package tool for the iPad. It emulates the SID sound chip from the dominating home computer of the 80s – The Commodore 64.

Get started immediately with the bundled songs and sounds in various styles, from old skool bleeps n blips to new school with multi speed and advanced table editing. Explore, remix and make new songs based on the old classic c64 game tracks “Commando” by Rob Hubbard or “Blood Money” by Fredrik Segerfalk, and the brand new youtube remix hit of the “True Survivor” Kung Fury soundtrack, all included in the app.

SidTracker64 is a retro-style music creation tool and synthesizer combined with modern features such as midi keyboard and controller input, Audiobus 2 and Inter App Audio for recording in your favourite DAW-app. Midi clock in lets you sync to other apps and hardware drum machines and synthesizers, such as the Elektron Analog Four.

SidTracker 64 can be used for live looping, making complete songs, and the minimum latency makes it suitable for live use. Export your music to Dropbox and e-mail as audio or .sid and even .prg files which you can run on a real Commodore 64.

Editing is based on hands on touch interaction or midi input instead of the hardcore style of direct data editing. Record live to a metronome or input notes step-style. Real SID-composing has never been simpler and more fun.

SID synthesizer engine specs:
· Fully emulated SID 8580 R5 chip.
· 3 separate voices
· 8 waveforms – tri, saw, pulse with pwm, noise, trisaw, tripulse, sawpulse, nowave
· Wavetable editing
· 3 volume envelopes
· Dedicated vibrato controls
· 1 multimode filter LP/BP/HP (12/6/12db) with sweep envelope
· Filter table editing. Change filter cutoff and modes up to 1/240
· Hard sync and Ringmod per voice
· PWM sweep envelop
· PWM table editing
· Hard restart
· Variable emulation speed from 25-240hz (standard 50)
· 32 instruments per song (copy/paste/rename)

Tracker (sequencer):
· 3 voice patterns
· Mute voices on/off
· Change instrument per step
· FX pattern – change volume/filter/speed per step
· Loop pattern
· Song building
· Live or step recording
· Metronome / count in
· Follow mode
· Note effects (Glide/sustain/vibrato/filter & pulse reset/tie)
· Song mode with transpose

Midi:
· Keyboard input 1-3 voices (mono, duo and polyphonic)
· CC-assignable synth parameteras
· Modulation wheel vibrato
· Pitch bend
· Midi Clock in
· Selectable input channel

Export:
· .s64 – native SidTracker 64 file
· .m4a – audio
· .sid – for use in sidplayer
· .prg – exports play data for a real Commodore 64

SidTracker64 is available for $12.99