iOS Musician Apps (50) Effect Type is Compressor, Limiter, Gate

This is actually a trio of effects all rolled into a single package which are ideally suited but not limited to voice recordings (De-Esser, a Vocal Doubler and a Noise Gate).

JamUp is an easy to use drag-and-drop interface that features amps, stomp-boxes and rack effects, all in a single app.

Visual Compressor is a 4 band compressor/expander which has the ability to analyse audio in real time giving an accurate and reliable spectrum representation of your signal as well as visual feedback of compression or expansion levels.  It's uses range from final mastering of songs to dynamic manipulation and EQing of drum tracks.

Moebius Lab is a multimorphic sound processor which contains a synth, a varispeed stereo sample player, effects and LFOs that can modulate each parameter.

A brickwall peak limiting app, for the complete control of your audio volume.

ToneBoosters Barricade is a peak limiter and compressor.

WOOTT uses a triple band dynamics algorithm with simultaneous downwards AND upwards compression, and adds a dedicated limiter to each band.

Pumphouse is a sidechain pumping effect. It helps if your DAW doesn't have sidechaining.

BIAS is an Amp Designer, Modeler and Processor.

Import audio and instantly get a mastered version. Immediately hear a boost in volume and overall sweetening of the mix.

This is an AUv3 compatible noise gate which can be used as a plugin with your favorite DAW such as Cubasis, Meteor, GarageBand or Auria.

This is a AUv3 compatible audio compressor which can be used as plugin with your favourite DAW such as Cubasis, Meteor, Auria or GarageBand.

A highly tweakable stereo dynamics processor with noise gate, compressor/expander with external side-chain input, and limiter/clipper.

This is an AUv3 compatible stereo compressor plugin. Side chaining is a technique used in a lot of modern dance music which involves using the volume level of one sound source to control another.

ToneBoosters Compressor is an AUv3 plugin for mastering-grade compression and dynamics processing.

At the heart of this compressor is a unique envelope follower design that makes it possible to compress the signal without creating distortion harmonics.

Real time vocal processor + recording app.

VocaLive offers singers and vocalists a suite of real-time professional vocal effects along with a recorder/DAW for studio quality sound (via in-app purchase), a looper for creative vocal experimentation (via in-app purchase), plus the ability to re-mike the input microphone with the Mic Room feature to add the sound and color of coveted studio microphones, all in a portable package (via in-app purchase).

Intensifier is an AUv3 audio unit and standalone designed to intensify your sound! The logic of the plugin operates similar to that of dynamic range compressors or transient shapers.

Multiband Compressor is a compressor effect.