iOS Musician Apps (503) Supported Technologies is Inter-App Audio (IAA)

Dual Digital Delay FX. Two separate (stereo) delay lines allow for a wide range of effects ranging from basic slapback and ping-ping type echos to complex modulations and soundscapes.

Roxsyn is a metamorphic guitar synthesizer.

RoughRider3 is a dynamic compressor.

Rotary is a rotating cabinet effect that simulates a Leslie speaker. It produces a pulse-like vibrato effect depending on the speed of rotation.

Turn your iPhone or iPad into a solid Rock Drummer with powerful drum sounds and tons of rhythms to get energetic drum grooves.

RMX-1000 for iPad is a tactile iPad app that lets you add high-quality FX to tracks in your iTunes library.

RM-1 is a multi purpose audio effect designed around various types of modulation.

Ribbons is an extraordinarily fun and expressive musical instrument for iPad.

RhythmBud is a MIDI effect application that would transform incoming MIDI messages into the rhythmic pattern you will create on its editor.

RF-1 is an Algorithmic Reverb (AU, AB, IAA, Standalone).

The Amazing Noises Reverb is a Feedback Delay Network (FDN) Reverb Effect, which can create nice reverberated ambiences, from small rooms to huge buildings.

Respiro Wind-Synth for iOS is a free standalone app (IAA) and AUv3 plugin synthesizer giving you access to six fully functional wind instruments for your device.

Slice your audio samples with ReSlice and create flexible musical atoms which can be triggered by MIDI notes or the touch of your fingers.

Redshrike is a polyphonic synthesizer that combines a resonator designed to make more complicated sound creation and subtraction synthesis with an FM oscillator that creates violent distortion.

Reason Compact puts a powerful synthesizer right at your fingertips.

RE-1 is a full featured virtual Tape Machine capable of delivering authentic tape based echo and chorus effects but it doesn't stop there. With it's interactive tape player, sample, loop and overdub features it's possible to use it like a virtual tape recorder, sample player, looper or simply as a master effect.

Ravenscroft Grand is a piano sampler.

Ratshack Reverb is a detailed model of that classic of classics, the Realistic Electronic Reverb. Now, you can have the sound of everyone's first analog delay unit, without ever having to change batteries!

This audio effect filter is a hybrid between a simple reverb and a very complex delay.