iOS Musician Apps (64) Supported Technologies is Audio Unit (AU), Effect Type is Equalizer, Filter

FD-1 is a Semi-Modular Effect Plugin including dedicated Filter, Delay and Modulation sections.

FabFilter Saturn 2 is a high-quality distortion/saturation plug-in with a huge range of distortion models ranging from subtle to screaming vintage amp modelling, multiple frequency bands, hugely flexible modulation system, and a very modern, well-designed user interface.

apeFilter is a sophisticated Equaliser, the DSP is based on the Biquad/Cascade filters, very fast!

FabFilter Pro-MB is a multiband dynamics plug-in featuring an optimized workflow: up to six compression/expansion bands can be placed freely anywhere in the spectrum.

Bark Filter is a Critical Band Analyser/Filter/Compressor.

This audio effect is an advanced de-esser with an intuitive user interface.

ChannelStrip is, as its name implies, a channel strip app and AUv3 plugin. With a gate, equalizer, and compressor, ChannelStrip can provide a solid and easy-to-use channel control for your iOS mixing needs.

BLEASS Motion FX contains 11 different effects which you can modulate precisely thanks to an intuitive and comprehensive sequencer.

ToneBoosters Equalizer is a dynamic equalizer plug-in.

ToneBoosters Morphit is an AUv3 plugin for headphones correction and simulation and removes any unwanted coloration from your headphones!

Knorr is a plugin that adds intensity and edge to a monophonic low frequency audio source (like a bass). The algorithm adds overtones to an existing sound in a way that isn’t possible with ordinary distortion or filtering.

Dual VCF adds motion, shape, and colour. It produces evolving rhythmic movement and complex dynamic filter shapes.

Shape your sound with advanced equalising to make your tracks fit in the mix.

FilterMorph plugin takes the concept of a traditional audio filter and pairs it with overdrive, bit crunching and tape delay to perform some incredibly neat real-time or beat synced automation effects.

Yukawa is an AUv3 compatible multi-effects plug-in that combines a tempo-synchronized multi-tap sequence delay that produces rhythmic phrases, a modulatable stereo delay, and a DJ mixer-style filter.

Visual EQ Console is a multi-band EQ console with the ability to analyse audio in real time giving a spectrum representation of the frequency response. 

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

Tape Pro is a multi-fx tape emulation AUv3 plugin and app that introduces warmth, frequency shaping, modulation, noise and delay.