Best apps like Harmonix

10+ similar apps compared and reviewed

4.2 avg rating
1 free apps
Updated September 2026

Whether you want more options like Harmonix or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to Harmonix

4.0😐(62 ratings)
$19.99
ButterSynth screenshot 1
ButterSynth screenshot 2
ButterSynth screenshot 3
ButterSynth screenshot 4
ButterSynth screenshot 5
ButterSynth screenshot 6

This powerful synthesizer app offers a hybrid approach, combining wavetable, FM, and sample-based synthesis. Create unique sounds with a vast sonic range, advanced modulation, and a built-in effects rack. It caters to both experienced sound designers and beginners with extensive presets.

What We Love

  • ✨ Deep sound design capabilities
  • 🎛️ Versatile modulation matrix
  • 🔊 Great sound quality
  • 💡 Innovative wavetable generator
  • 🌟 Serum-like experience
  • 📱 Available on phones/iPads
  • 🎹 Excellent for sound design
  • 🚀 Powerful and capable synth
  • 💯 Top-tier instrument
  • 🎶 Amazing workflow and sound
  • 💻 Desktop-class plugin on iOS
  • 🎨 Beautiful and intuitive UI
  • 🎚️ Wide range of filters
  • 🎛️ Loads of modulation capabilities
  • 💡 Unique random LFO feature
  • 🎚️ Good array of effects
  • 🎛️ Multiple oscillator types
  • 🎚️ FM synthesis included
  • 🎛️ Real 4-op FM synthesis
  • 🎨 Straightforward interface presentation
  • 🎚️ Great filters
  • 🎶 Excellent sound
  • 💡 Top-notch sound banks/patches
  • 🎛️ Highly customizable
  • 🎚️ Great for DnB
  • 🎛️ Can sound pretty or nasty
  • 🎚️ Granular controls
  • 🎛️ Deep and great sounding
  • 💡 Can recreate popular synths
  • 🎚️ Powerful and versatile
  • 🎛️ Good selection of presets
  • 🎚️ Excellent standalone app
  • 🎛️ Amazing wavetable synth
  • 🎚️ Good for soundscapes
  • 🎛️ Highly recommended

Room to Improve

  • 📱 Fiddly on small screens
  • 🐛 Crashes frequently
  • 🐛 Disappears in Cubasis
  • 🐛 Spikes CPU usage
  • 🐛 Crashes on patch change
  • 🐛 No audio on render/freeze
  • 🐛 Keyboard doesn't load on iPhone
  • 🐛 Audio Unit Extension quit error
  • 🐛 Unusable in GarageBand
  • 🐛 Preset changes on play
  • 🐛 Random crashes in Logic Pro
  • 🐛 Patches hang
  • 🐛 Limited wavetable selection
  • 🐛 Sample module buzz
  • 🐛 Simple LFOs
  • 🐛 Square wave LFO not square
  • 🐛 Step sequencer has glide
  • 🐛 Can't save custom presets
  • 🐛 No undo in wavetable editor
  • 🐛 AUv3 loading issues
  • 🐛 Unstable as AUv3
  • 🐛 Patches sound different in AUv3
  • 🐛 Crashes on iPhone with sequencer
  • 🐛 No keyboard in iPhone standalone
  • 🐛 Audio degradation in GarageBand
  • 🐛 Preset browser closes on selection
  • 🐛 Envelope curve is odd
  • 🐛 Release envelope ends abruptly
  • 🐛 Matrix fiddly with min/max knobs
  • 🐛 Missing filter key follow button
  • 🐛 Missing sustain pedal support
  • 🐛 Missing tunings
  • 🐛 Missing master detune
  • 🐛 Missing parameter lock
  • 🐛 Black borders on screen
  • 🐛 Automation not working
  • 🐛 No contact option for developer
Neo-Soul Keys® Studio 2#2

Neo-Soul Keys® Studio 2 by MIDIculous LLC

The #1 Electric Piano Library
Strong Contender
🎵 Music
4.7(19 ratings)
$24.99In-App Purchases
Neo-Soul Keys® Studio 2 screenshot 1
Neo-Soul Keys® Studio 2 screenshot 2
Neo-Soul Keys® Studio 2 screenshot 3
Neo-Soul Keys® Studio 2 screenshot 4
Neo-Soul Keys® Studio 2 screenshot 5

This app offers a vast collection of high-quality electric piano sounds and effects, blending organic samples with synthesizer flexibility. It features a comprehensive library with numerous presets and advanced editing options for a complete electric piano experience.

ANILOG#3

ANILOG by Sequence Mediaworks LLC

Morphing analog synthesizer
Worth Considering
🎵 Music
4.3(18 ratings)
$5.99
ANILOG screenshot 1
ANILOG screenshot 2
ANILOG screenshot 3
ANILOG screenshot 4
ANILOG screenshot 5

Create unique synthesized sounds with a mobile analog synthesizer. Design vintage video game, chiptune, and synth-pop music with a powerful multi-track sequencer and live performance features. Load it as a plugin in your DAW for ultimate flexibility.

More apps like Harmonix

4
RingsFX
RingsFX
RingsFX
Physical Modelling Resonator
$7.99
$14.99 | 47% OFF

This music app emulates a renowned physical modeling synthesizer, offering diverse synthesis techniques and polyphonic capabilities. It allows for real-time parameter manipulation and can process external audio, creating unique sonic textures and rhythms.

Physical modeling synthesis emulationMultiple polyphony modes (Mono, Duo, Quad, True Polyphonic)Supports MIDI MPE and velocity sensitivity
🎵 Music
(26)
paid
5
Elastic Melody
Elastic Melody
Elastic Melody
Create melodies easily
$8.99
$14.99 | 40% OFF

Create melodies with a fast and intuitive analog-style step sequencer. Features 3 synth channels, 4 master effects, and extensive automation capabilities for dynamic sound design. Supports AUv3 and Ableton Link.

3-channel analog synth sequencerParameter automation4 master effects (EQ, Chorus, Delay, Reverb)
🎵 Music
(10)
paid
6
MeloVox - Vocal Harmony
MeloVox - Vocal Harmony
MeloVox - Vocal Harmony
by 4Pockets.com
$14.99

This app generates up to five simultaneous vocal harmonies with advanced formant preservation for natural-sounding results. It offers automatic harmony generation or precise MIDI control, along with built-in effects like a noise gate, doubler, EQ, and reverb.

Up to 5 simultaneous harmoniesFormant preservationAutomatic harmony generation
🎵 Music
(4)
paid
7
Mini Synthesizer
Mini Synthesizer
Mini Synthesizer
by Electro-Harmonix
$4.99

This app faithfully recreates a classic analog synthesizer from the 1980s, offering vintage sounds with modern updates. It features intuitive controls for pitch, filters, and delay, allowing for extensive sound shaping and preset saving.

Faithful analog synthesizer recreationVintage and modern sound updatesIntuitive controls with sliders and switches
🎵 Music
(12)
paid
8
BLEASS Flanger
BLEASS Flanger
BLEASS Flanger
21st Century Flanging
$6.99

This audio effect app provides a modern take on classic flanging, offering flexible modulation sources, an envelope generator, and beat synchronization. It allows for complex and evolving timbral movement within your sound, with intuitive controls and efficient CPU usage.

Flexible LFOsEnvelope generatorBeat synchronization
🎵 Music
(13)
paid
9
XinematiX
XinematiX
XinematiX
KARO Cinematic Orchestra
Free
$14.99 | 100% OFF

This app provides a vast library of premium sounds for iOS, developed with meticulous recording and programming. It offers unlimited creative possibilities with a high-quality sound engine, advanced features like round robin triggering, and extensive customization options for professional music production.

25 GB premium soundsRound Robin sample triggeringMulti-program stacking
🎵 Music
(295)
free with in-app purchases
10
Alien Box
Alien Box
Alien Box
Sound Enrichment - Audio Unit
$2.99

This audio effect plugin creates a unique sound with increased sustain and gentle, LFO-modulated vibes. It functions as an AUv3 effect for hosts like GarageBand or as a standalone app for real-time audio input processing.

Unique sound enrichmentLFO modulated vibesComplex resonator system
🎵 Music
(3)
paid