Free IOS apps (some with IAP or potentially subscription approaches to create revenue for the developers). Apps are sorted by category and developer name.
| APP | Technology | IAP | Description | |
|---|---|---|---|---|
| – Host-Apps — | ||||
| Apple | GarageBand | Host (AU +IAA) | - | |
| Steinberg Media Technologies GmbH | Cubasis LE 2 | Host (AU + IAA) | ✔ | Requires a supported hardware device or will be in demo mode ( IAP for Cubasis Upgrade and FX ) |
| - Instrument-Plugins - | ||||
| Aleksei Shchekochikhin | aPolyvoks | APP + AU | - | Monophonic synth inspired by soviet POLIVOKS synth |
| Audible Genius | Primer synth | APP + AU | - | Subtractive monophonic analogue synth |
| AudioKit | Synth One | AB + IAA + LINK | - | Feature-packed synth for iPad |
| Blamsoft | Viking Synth | AU | - | Emulation of a classic monophonic analog synthesizer |
| Jatin Chowdhury | ChowKick | AU | ✔ | Kick drum synthesizer ( IAP for tips ) |
| Fingerlab | Mellowsound | APP + AB + AU | ✔ | Mellotron emulation( IAP for full version, presets) |
| Fingerlab | Mynth | IAA + AU | ✔ | Synthesizer with user drawn waveforms( IAP for full version, presets and saving) |
| Fingerlab | SK-51 | IAA + AU | ✔ | All-in-one keyboard inspired by the Casio SK-1( IAP for full version) |
| James Milton | Poly 2 | APP + IAA + AB + LINK + AU | ✔ | Generative sequencer for audio and midi( IAP for full version ) |
| KORG | KORG iKaossilator | APP + IAA | ✔ | X-Y pad beat generator ( IAP for sounds ) |
| KORG | KORG Module | APP + IAA + AU | ✔ | Sound module ( IAP for sounds ) |
| KV331 Audio | SynthMaster One | APP + IAA + AB + LINK + AU | ✔ | Wavetable synth ( IAP for sounds ) |
| KV331 Audio | SynthMaster Player | APP + IAA + AB + AU | ✔ | Preset software synth ( IAP for sounds ) |
| Nikolozi Pty Ltd | Mela 1 – Synth & FX | AU | - | Virtual analog synthesizer and multi-effects processor |
| Nikolozi Pty Ltd | Mela 2 – Synth & FX | AU | - | Virtual analog synthesizer and multi-effects processor |
| Moog Music | Moog Model D | APP + IAA + AB + LINK + AU | ✔ | Classic analog synth ( IAP for sounds ) |
| ROLI Ltd. | NOISE | APP + AU | ✔ | Companion app (synth + drums) for Roli devices. ( IAP for sounds ) |
| Steinberg Media Technologies GmbH | Nanologue | APP + IAA | - | iOS port of the VST3 synth for iPad. ( iPad only) |
| Stefan Stenzel | iOptigan | APP + IAA | ✔ | 1970th chord organ using optical discs ( IAP for sounds ) |
| Studiologic | Numa Player | APP + AU | - | 4 layer soundmodule with 27 free sounds |
| Sugar Bytes GmbH | Aparillo | APP + AU | ✔ | Advanced 16 voice FM synth ( IAP for full version ) |
| Sugar Bytes GmbH | DrumComputer | APP + AU | ✔ | Drum Maschine ( IAP for full version ) |
| Sugar Bytes GmbH | Factory | APP + AU | ✔ | Semi modular synth. ( IAP for full version ) |
| Thomas Burns | Spectrum | AU | - | 3 Synth based on eurorack synthesizer modules made by Mutable Instruments |
| — FX-Plugins — | ||||
| Adam Bell | J_NO Chorus | AU | Vintage chorus effect | |
| Amazing Noises | DubFilter | AB + IAA | ✔ | Dub Filter is a dual low-pass/high-pass 24/48 dB filter. ( IAP for AU ) |
| Audio Damage, Inc. | Rough Rider 2 | APP + IAA + AU | - | Compressor |
| Audio Damage, Inc. | Rough Rider 3 | APP + AU | - | Compression with side chain support |
| Audio Damage, Inc. | FuzzPlus 3 | APP + AU | - | Resonant lowpass filter and a distortion engine with feedback loop. |
| AudioKit | AudioKit Reverb | AU | - | Reverb |
| Audiomodern EOOD | Filterstep | APP + AU | - | Filter sequencer |
| Audiomodern EOOD | Gatelab | APP + AU | - | Gate and CC sequencer |
| Baby Audio | Magic Dice | APP + AU | - | Echo / Reverb |
| Baby Audio | Magic Switch | APP + AU | - | Chorus |
| Blamsoft | Resampler Bitcrusher | AU | - | Bitcrusher |
| Blamsoft | Zero Chorus | AU | - | Simple Chorus |
| Blamsoft | F-16 Filter | AU | - | Filter |
| Blamsoft | DC-9 Overdrive | AU | - | Overdrive |
| Blamsoft | Zero Reverb | AU | - | Simple Reverb |
| Caelum Audio | Flux Mini | AU | - | Amp and Filter Modulation Envelope |
| Caelum Audio | Flux Mini 2 | AU | - | Advanced Amp and Filter Modulation Envelope |
| Caelum Audio | Tape Cassette | AU | - | Tape saturation, wow and flutter |
| Caelum Audio | Tape Cassette 2 | AU | - | Emulates the warmth, noise and character of old tape cassettes |
| Evan Murray | Intensifier AUv3 | APP + AU | - | Transient shaper |
| Haruku Mizoshita | DL01 - simple delay | AU | - | Delay |
| Haruku Mizoshita | MF01 - multi mode filter | AU | - | Filter |
| Haruku Mizoshita | VB01 - simple reverb | AU | - | Reverb |
| Imaginando Lda | DLYM | AU | - | Produces flanger and chorus style effects |
| Inphonik | PCM2612 Retro Decimator | AU | - | Scalable 8-bit decimation |
| Jatin Chowdhury | ChowCentaur | AU | - | Emulation of the Klon Centaur guitar pedal with circuit modeling or neural network |
| Jatin Chowdhury | ChowTapeModel | AU | ✔ | Analog tape maschine emulation ( IAP for tips ) |
| Joerg Knieschewski | SimpleStereoWidening | AU | - | Stereo widening |
| Julien Faure | Tone Deluxe | AU | - | Tube amplifier, spring reverb and cabinet |
| Klevgränd produkter AB | Svep | IAA + AU | - | Stereo modulation filter effect - phaser, flanger, chorus |
| Mani Consulting Ltd | Multiband | AU | - | Multiband splitter |
| Mani Consulting Ltd | Stereo Lag Time | AU | - | Adds a small delay between the left and right channels |
| Matthew Caldwell | Frobulator | IAA + AB | - | Experimental stereo modulated filter and delay effect |
| Matthew Caldwell | Muckracker | IAA + AB | - | Abstract audio distortion effect to annihilate your sound |
| Matthew Caldwell | Nebulizer | IAA + AB | - | Echo box with sound stretching and warping |
| Nembrini Audio S.R.L. | 808 Overdrive Pro | IAA + AU | - | Distortion |
| Nembrini Audio S.R.L. | Analog Rack Chorus | IAA + AU | - | Simple chorus |
| Nembrini Audio S.R.L. | Analog Rack Cleaner | IAA + AU | - | Low and highpass filter |
| Nembrini Audio S.R.L. | Analog Rack Delay | IAA + AU | - | Delay with BPM sync |
| Nembrini Audio S.R.L. | Analog Rack Noise Gate | IAA + AU | - | Noise Gate plugin especially tuned for guitar and bass |
| Nembrini Audio S.R.L. | Black Distortion | IAA + AU | - | Distortion plugin modeled on the RAT2* distortion pedal |
| Nembrini Audio S.R.L. | Crunck V2 | IAA + AU | - | Guitar amp simulation |
| Neon Silicon | CuSnP | AU | - | Resonant String simulation |
| Neon Silicon | GyroVibe | AU | - | Vibrato and multi-stage driven filters |
| Neon Silicon | LRC5 | AU | - | Five band EQ |
| Neon Silicon | LRC7 | AU | - | Seven band multitype filter |
| Neon Silicon | NeSi xTrem | AU | - | Stereo-stereo tremolo |
| Neon Silicon | PhaseDelayArray | AU | - | Three effect units chained in an interesting configuration |
| Neon Silicon | Spirangle | AU | - | Tempo Synced Delay with filters |
| Ngo Minh Ngoc | Stereo Lag Time | AU | - | Small delay between the left and right channels |
| Nikolay Dyatlov | EQ-560 | APP + AU | ✔ | 10-Band graphic equalizer based on Classic American EQ from the late ’60s (AU free with 5min usage per load, IAP for full version ) |
| Nikolay Dyatlov | EQ-A | APP + AU | ✔ | EQ based on Classic British EQ from the ’70s (AU free with 5min usage per load, IAP for full version ) |
| Nikolozi Pty Ltd | Mela 1 – Synth & FX | AU | - | Distortion, phaser, chorus, flanger and delay with lfo modulations |
| Nikolozi Pty Ltd | Mela 2 – Synth & FX | AU | - | Distortion, phaser, chorus, flanger, delay and compressor with lfo modulations |
| Polyverse Music | Wider by Infected Mushroom | AU | - | Stereo Expander |
| Pulsar Novation | Lunar Lander | AU | ✔ | BBD Delay, Plate Reverb and Saturation ( IAP for full version ) |
| Ryo Togawa | ChannelEqualizer | AU | - | Three band EQ |
| Thomas Burns | Spectrum | AU | - | Resonator FX based on eurorack modulse made by Mutable Instruments |
| ToneBoosters | TB Spectrogram | AU | - | Real-time spectrogram of the incoming audio signal |
| Ultimate Guitar | Tonebridge Guitar Effects | IAA + AB + AU | - | Preset Guitar FX |
| — Midi-Plugins — | ||||
| Audeonic Apps | StreamByter | AU | - | Midi scripting language with GUI |
| Audeonic Apps | mfxMonitor | AU | - | Display midi events in a scrolling window |
| Kai Aras | MIDISpy | AU | - | Monitor midi events |
| Rodrigo Roman | Physicles | AU | - | Generates midi note based on physics simulation |
| Uwyn LLC | MIDI Tape Recorder | AU | - | MPE recorder and looper |
| — Misc — | ||||
| Rodrigo Roman | sequencism | APP | - | Simple music sketchbook |
| Audible Genius | Syntorial | APP | ✔ | Synthesizer Programming traing app with sample lessons. ( IAP for full version ) |
Missing:
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(Feel free to add more and also add iTunes Store Links)