“A big step forward for mobile music” - CDM (Create Digital Music)
"Groundbreaking iOS synth app" - Cult of Mac
"Must-download for every iPad owner" - MacBreak

*** "2018 App of the Year, Runner up" – ***
*** “Best iOS Music Apps of 2018” – Cult of Mac ***
*** “Best of 2018: iOS Apps for Musicians” – Ask.Audio ***

"AudioKit Synth One is a free feature-packed synth for your iPad, including 300+ presets created by professional sound designers behind M83, Tycho, and Rihanna" - Engadget

*** “Best Music Apps of 2018” – Music Radar ***


*** Optimized for newer iPads & iPhones for best performance.
Note: Requires iPhone 6 or higher screen size. App will not work on older iPhone 5/SE/Touch devices

"A Stunning Endeavor... Sounds Amazing!"
- Francis Preve, Electronic Musician Magazine

“Amazing & Brilliant… Sounds fantastic!”
– The Sound Test Room

"A great example of human endeavor"
- Gaz Williams, Sonic State

"Sounds amazing... the start of something huge."
- Ask.Audio

AudioKit Synth One is the first completely free & open-source professional iOS Synthesizer app in history. No Ads. No IAP. It will always be free.

"Powerful... Awesome" -
"An amazing synth app for your iPad that’s as close to sorcery as it gets" - GarageBand Guide
"Must Have iOS Synthesizer" - Synth Anatomy
"Synth One is a robust piece of free software" - The Verge
"It WOWS you... immediately fun to start tweaking!" - discchord
"A damn fine synth" - Computer Music Magazine
"Open-source and seriously powerful" - Future Music Magazine
"A labour of love that everyone can enjoy" - Music Radar
"Extremely exciting passion project" - Music Tech Magazine
"Make your own imposing synthesizer sounds and teach yourself the basics of music production" - Lifehacker

Learn more:

Created by over 100+ volunteers around the world (including sound designers for M83, Rihanna, Kanye West, Neon Trees, Mike Posner, Tycho, and more), this app includes MIDI support (play it with a MIDI keyboard or controller), sequencer, vintage-inspired analog filters, expressive arpeggiators, warm analog delays, and, over 300+ presets to get you started!

Email us your music & bugs:

This synthesizer is completely free, fully functional, and ad-free. There are no IAP or anything to buy -- It’s the ultimate free iPad music instrument app!

• Hybrid Analog/FM Poly Synthesizer
• Over 300+ Presets crafted by famous sound designers
• Audiobus 3 & Inter-app Audio (IAA)
• Ableton Link
• Five Oscillators (2 DCO, FM, Sub, Noise)
• 2 LFOs with over a dozen routing possibilities
• Vintage-Style 16-Step Sequencer
• Classic poly arpeggiator
• MIDI in (Control with a MIDI Keyboard or AudioBus/IAA)
• Touchable ADSR Envelopes for Amp & Filter
• FM Oscillator w/ Mod
• Mono glide and legato
• Dedicated Sine/Square -12/24 Sub Osc
• 4-Pole Vintage Low-Pass Filter
• High-Pass/Band Pass Filters
• Beautiful Costello Reverb
• Multi-tap (ping-pong) delay
• TouchPads
• Preset & Bank Import/Export & More…

BONUS: Full Source code is now available!

Plus, it’s completely open-source. Use the code to learn how to build your own synth app or modify the app yourself!


"Amazing noises that will make your ears squee with glee" - Stuff Magazine
"Pick of the Week" - MacBreak

On the roadmap:
• MPE Support (Play w/ a Roli Seaboard)
• AUv3 Plug-in support


Versione 1.6

HEY EVERYONE! Thanks for being super awesome!
+ Do you have to pound your midi keyboard to get a note to play loudly? Do you barely press a key and have it play too loud? Well now you can adjust S1's sensitivity to MIDI Velocity in the Settings pop-over. Enable “Velocity-sensitive MIDI” and adjust the sensitivity knob to make your performance as expressive as possible for your keyboard. Also great with ROLI keyboards.
+ Fixed a bug that broke reordering your presets
+ Fixed a bug that hid the text of the name when saving presets.
+ Playing the Arp in down mode now plays keys in the order pressed (thanks to Francis Preve for this idea)
+ We are all volunteer musicians & coders. Thanks for your help!
+ Special thanks to volunteer coder Marcus Hobbs who added most of these features!

Synth one is getting better every day! That's the power of open-source.
Please note that we all are volunteers. AudioKit does not have any sponsors or investors.
We are all musician/developers who love making apps.

Together we can change the world.

We love hearing your music! Send it to us. For friendly conversation or to say hello, please email

The full & complete source code is available:

Valutazioni e recensioni

4.9 su 5
667 valutazioni

667 valutazioni

Renato Petra ,


Come non ringraziare gli sviluppatori di questo synth così incredibilmente espressivo?
Il suono è corposo, assai caratteristico, molto potente. Gli effetti di eco e riverbero sono di livello elevato e contribuiscono molto a dare spazialità e presenza al suono. È sicuramente un VA completo ed è stupefacente che un synth di questo livello, considerando anche che pure i preset sono stati fatti con grande accuratezza e sono tutti veramente stupendi, sia totalmente gratuito!
Oltretutto viene aggiornato spesso e vengono pure inserite nuove funzionalità. Non si potrebbe davvero chiedere niente di più.
I suoni di qesto synth mi emozionano veramente e ci tengo a sottolinearlo.
Si vede che è una cosa costruita con grande passione. Una vera gemma tra le app di musica dello store di Apple che brillerà per molto, molto tempo.

SilverJunglist ,

Grande applicazione

Gran bei presets, è un suono pulito e profondo, per ora mi ci sono divertito soltanto a strimpellare qualcosina al volo, ma si integrerà alla grande insieme al resto del mio arsenale di produzione su IPad, un ultima cosa...elliot’s rootkit, mi ricordava qualcosina quell arpeggio, appena ho letto il nome...MR ROBOT😮😮😮😮😮😍😍😍😍

angelxpress999 ,


Grazie agli sviluppatori,ai volontari e agli artisti per aver realizzato a tutti un’app così bella e potente, complimenti, siete grandi.
Thanks a lot to the developers, volunteers and to the artists for making such a beautiful and powerful app, congratulations, you’re great.


AudioKit Pro, LLC
72.8 MB

Richiede iOS 10.3 o versioni successive. Compatibile con iPhone, iPad e iPod touch.


Cinese Semplificato, Cinese Tradizionale, Francese, Giapponese, Inglese, Portoghese, Turco



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