Best Buttersynth Apps & Games

250+ iOS apps & games curated and reviewed

4.4 avg rating
17 free apps & games
Updated September 2026

Whether you're new to buttersynth or looking for an upgrade, our curated collection of 250+ iOS apps and games has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Compare top Buttersynth Apps & Games (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1ButterSynthButterSynth$19.994.0★ (62)NoNoAug 2026
2Granula SynthGranula SynthFree1.8★ (4)NoYesJul 2026
3AudioKit Synth One J6AudioKit Synth One J6Free4.9★ (2.3K)NoYesSep 2026
4AudioKit Synth One SynthesizerAudioKit Synth One SynthesizerFree4.9★ (27K)NoNoSep 2026
5Pure Synth® PlatinumPure Synth® PlatinumFree3.5★ (54)NoYesSep 2026
6SynthMaster One for iPhoneSynthMaster One for iPhoneFree4.8★ (331)NoYesSep 2026
7Voice Synth ModularVoice Synth ModularFree4.2★ (3K)NoYesSep 2026
8Jam SynthJam SynthFree5.0★ (28)NoYesSep 2026

Top Picks for Buttersynth

4.0😐(62 ratings)
$19.99
ButterSynth screenshot 1
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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
Granula Synth#2

Granula Synth by Stanislav Duplinskiy

Sound Generation
Strong Contender
🔧 Utilities
1.8(4 ratings)
FreeIn-App Purchases
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Explore new soundscapes by manipulating granular audio. This app offers a library of presets, custom sound import, and extensive parameter adjustments for unique music creation. Save your settings and share your sonic experiments.

AudioKit Synth One J6#3

AudioKit Synth One J6 by AudioKit Pro

NEW! Pro Synthesizer + AUv3
Worth Considering
🎵 Music
4.9😊(2.3K ratings)
FreeIn-App Purchases
AudioKit Synth One J6 screenshot 1
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This app offers a professional-quality virtual analog synthesizer inspired by classic hardware. It provides a vast library of presets, real-time effects control, and a user-friendly interface for both beginners and experienced musicians. It can be used as a standalone instrument or as an AUv3 plugin.

What We Love

  • 🚀 Amazingly inspirational
  • 👍 Awesome and free
  • 👍 Ridiculously good UI
  • 👍 Must have
  • 👍 Great for AUv3
  • 👍 Simply fantastic
  • 👍 Analog dreams with clear UI
  • 👍 Wow, a gift to music makers

More Buttersynth apps to explore

FAQ about Buttersynth

What are the best buttersynth apps & games for iPhone?
ButterSynth tops our buttersynth apps & games ranking as of September 2026, with a 4.0-star average from 62 App Store ratings, and it's priced at $19.99.
Yes — 17 of the top buttersynth apps & games we rank are free to download, including Granula Synth and AudioKit Synth One J6.
ButterSynth has no ads and has no in-app purchases, according to its App Store listing as of September 2026.
We track 250+ buttersynth apps & games on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
ButterSynth is a hybrid synthesizer that combines multiple synthesis engines. It features wavetable synthesis, FM synthesis, and sample-based synthesis, allowing for a vast sonic range and unique sound design possibilities.
Yes, ButterSynth includes a built-in wavetable editor. This allows you to tweak, morph, and hand-draw your own custom wavetables, with each wavetable supporting up to 256 frames for deep customization.