Best ButterSynth alternatives: apps like ButterSynth

10+ similar apps compared and reviewed

4.7 avg rating
0 free apps
Updated October 2026

Looking for something like ButterSynth? We've analyzed 10+ similar apps to help you find the best alternative. Each app is compared by ratings, features, and real user reviews, so you can make the right choice.

Top Alternatives to ButterSynth

Hilda Synthesizer#1

Hilda Synthesizer by Bram Bos

Complex Oscillator Synth
Editor's Choice
🎵 Music
4.9(58 ratings)
$12.99
Hilda Synthesizer screenshot 1
Hilda Synthesizer screenshot 2
Hilda Synthesizer screenshot 3

This app offers a complex oscillator monosynth with a blend of west-coast and east-coast synthesis techniques. It features a wave folder, lowpass gate, 12-mode filter, and VCA circuit, all meticulously circuit-modelled for authentic analog or digital sound. It functions as a playable synth, MIDI sequencer, and audio effect.

Tera Pro#2

Tera Pro by Harry Gohs

Modular PolySynth
Strong Contender
🎵 Music
4.6😊(155 ratings)
$6.99In-App Purchases
Tera Pro screenshot 1
Tera Pro screenshot 2

Explore a vast array of sound synthesis methods, from analog emulations to modern digital techniques. Combine modules for unique sonic textures, enhanced by an intelligent interface and realtime visual feedback. Expand your sound palette with additional modules available through in-app purchases.

What We Love

  • 🎵 Exceptional sound quality and versatile synthesis capabilities
  • 💡 Innovative modular workflow with flexible architecture
  • 🎛️ Extensive preset library (1000+ presets)
  • 🔧 Powerful sound design tools with multiple synthesis types
  • 📱 Available on both iOS and macOS (M1)
  • 🎹 Excellent IAP modules (BrainZ, Waves, FM7, RingZ)
  • 🎨 Visual feedback with oscilloscope displays
  • 🎯 Responsive filter with great resonance
  • 🔄 Useful randomize function for patch generation
  • ⚡ Strong arpeggiator with multi-lane capabilities
  • 🎪 Dual-layer synthesis engine for complex sounds
  • 🌙 Dark mode support
  • 🎚️ Excellent MPE implementation

Room to Improve

  • 🎮 Steep learning curve and complex UI
  • ⌨️ Unconventional on-screen keyboard design
  • 🐛 Frequent crashes and stability issues
  • 🔊 Dangerously loud output without limiter
  • ⚙️ UI elements sometimes unresponsive or laggy
  • 💾 Hidden file structure makes backup difficult
  • 🎹 Key Hold feature buried in menus
  • 🔒 Locked layer editing (can only edit one at a time)
  • ⚠️ Some presets produce noise or no sound
  • 🖥️ High CPU usage on older devices
  • 📱 Battery drain issues in AUM on iPad
  • 🎚️ Wavetable oscillator sometimes silent
  • ❌ No MIDI Panic button readily accessible
BA-1 - Baby Audio#3

BA-1 - Baby Audio by Baby Audio Inc.

Analog Modeled Synthesizer
Worth Considering
🎵 Music
4.6(34 ratings)
$29.99
BA-1 - Baby Audio screenshot 1
BA-1 - Baby Audio screenshot 2
BA-1 - Baby Audio screenshot 3
BA-1 - Baby Audio screenshot 4

This app brings a vintage analog-modeled synthesizer to your device, offering lush 80s sounds. It can be used standalone or as an AUv3 plugin in music production apps. Explore over 500 presets or generate new sounds with a unique 'Re-Gen' feature.

More apps like ButterSynth

4
BLEASS Arpeggiator
BLEASS Arpeggiator
BLEASS Arpeggiator
Hands-on Creative Arpeggiation
$14.99

This app offers advanced arpeggiation capabilities for musicians, going beyond traditional patterns with polyrhythms and polyphony. Its intuitive interface encourages on-the-fly experimentation, enhanced by performance controllers, LFOs, and a motion sequencer. It also includes a built-in FM synth for sound generation or can be used with other instruments.

Advanced arpeggiation patternsPolyphony and polyrhythmsHands-on creative interface
🎵 Music
(54)
paid
5
Nambu - AUv3 Plug-in Synth
Nambu - AUv3 Plug-in Synth
Nambu - AUv3 Plug-in Synth
FM Synthesizer
$16.00

This app is a semi-modular FM synthesizer offering a unique sound design experience. It combines traditional FM operators with six distinct operator types, including analog-style oscillators, noise, filters, and resonators.

Semi-modular FM synthesisSix operator typesAnalog synth-style oscillators
🎵 Music
(48)
paid
6
BLEASS Megalit
BLEASS Megalit
BLEASS Megalit
Monumental Sonic Power
$19.99

This powerful music synthesizer offers a vast sonic palette with advanced wavetable and subtractive oscillators, flexible filtering, and extensive modulation sources. Its intuitive interface makes complex sound design accessible to all musicians.

Advanced wavetable oscillatorsPer-oscillator unison modeNoise generator with filtering
🎵 Music
(32)
paid
7
Sunrizer synth
Sunrizer synth
Sunrizer synth
Synthesizer & Audio Unit
$12.99

This virtual analog synthesizer offers a rich, warm sound with advanced features like SuperSaw emulation and morphing parameter control. It integrates seamlessly with MIDI hardware and sequencers, providing a professional-grade sound design experience on iOS.

SuperSaw sound emulationDual filters with configurable routingMorph Group for parameter control
🎵 Music
(183)
paid
8
Zeeon synth
Zeeon synth
Zeeon synth
Analog modeling synthesizer
$14.99

This app is a virtual analog synthesizer that recreates the sound and feel of classic hardware. It features a detailed circuit-modeling engine, powerful modulation, and multiple filter models for rich, organic soundscapes. Explore a vast array of presets and expand your sonic palette with additional sound banks.

Circuit-modeling enginePowerful modulation matrixDual oscillators with variable waveforms
🎵 Music
(209)
free with in-app purchases
9
FabFilter Twin 3
FabFilter Twin 3
FabFilter Twin 3
Powerful synthesizer plug-in
$24.99

This powerful virtual analog synthesizer offers a vast array of sound-shaping tools, including multiple oscillators, filters, and a comprehensive modulation system. Create a wide range of synth sounds with an intuitive interface and a rich factory preset library.

Four flexible oscillatorsFour vintage-style filtersExtensive modulation system
🎵 Music
(42)
paid
10
Salome - MPE Audio Sampler
Salome - MPE Audio Sampler
Salome - MPE Audio Sampler
Record, Import, Play
$7.99

This app lets you record or import sounds, transform them into seamless loops, and play them polyphonically using MPE or MIDI controllers. It offers a fast workflow with onscreen keypads and MPE/MIDI input/output for creative sound manipulation.

Record or import soundsCreate seamless loopsPolyphonic MPE/MIDI playback
🎵 Music
(30)
paid