iOS Musician Apps (50) Instrument Sounds is Keyboards, Free

Featuring an FM tone generator, FM Essential is a synthesizer app that provides for real-time synth performances and also lets you edit voices.

Colossus Piano sets a new standard in terms of realism, detail and overall quality of piano sounds on your iPad, iPhone and iPod touch.

The concert quality piano app.

Dedicated monophonic synth bass synthesizer.

Play the vibe. Hear the magic. Syntronik is IK’s cutting-edge synthesizer that features the sound of the most iconic machines to ever grace the planet.

Each of the 2 oscillators offers a selection of 5 waveforms: sawtooth and pulse waves are here, along with noise, triple saw and triple FM waves. There's also an additional sub-oscillator strapped into the master section for added oomph.

RD4 - Groovebox is a music making app with virtual analog synthesizers, drum machines and effects.

A strange noise-making device.

Electric piano sampler.

Pure Synth® Platinum is a full-blown rompler/synthesizer for your iOS device. Neither the synth engine or the sample engine is an afterthought: Both engines are fully capable and feature-rich. The romper section contains a well rounded assortment of analog, synth, string, digital, and acoustic instruments.

Triqtraq LE is a free limited edition of the critically acclaimed music app Triqtraq - Jam Sequencer.

The concert quality piano app.

Chiptunes Pro lets you make retro music the way it should be made - with chips. Build your circuit to lay down drum beats, basslines, and tunes.  No knowledge of electronics needed.

Nanologue boasts a wide scope of inspiring sounds and professional sound effects, sporting a straightforward multi-touch interface and a great-sounding monophonic synthesizer.

Dandy is a sampler/synthesizer for iPhone inspired by Dandy Desmonds composition “Magnetic Loops for 15 Tape Decks” from 1938, which is one of the earliest known works of electroacoustic music.

VOSIS is a synthesizer that uses scanned synthesis of greyscale image pixel data from photos or live video input. It is also a tool for image audification/sonification and visual music performance.

AutoArp turns your iPhone (or iPod Touch) into a musical instrument that is halfway between a traditional auto-harp zither and an arpeggiated analogue-style synth.

Fed up with standardized presets and instruments? Feel lost in overcomplex filters and effects? Don’t wanna sound like everyone else? BLEASS is just the right instrument for you: it unleashes your inner musical creativity by bringing music production and performance to its very core: play, perform, compose beats and melodies in a new yet intuitive way thanks to its multitrack sequencer, synthesizer and drum machine.

SynthMaster Player for iPad is the MOBILE PLAYER VERSION of the award winning SynthMaster software synthesizer.

HOWL is a simple vocoder/synthesizer. It uses formants to simulate the human voice and a pitch-space keyboard to help you find interesting melodies.