AudioKit Synth One Synthesizer

Select by:
From
To
0.00
75.00
150.00
224.99
299.99
Follow us on twitter and get new apps, updates, price drops instantly.

All devices →

AudioKit Synth One is a completely free & open-source professional iOS Synthesizer. 

Price Free
Author AudioKit Pro
Type Instrument
Instrument type Synth
Instrument sounds Keyboards
Supports Inter-App Audio (IAA), Audiobus, Audio Unit (AU), Ableton Link
Rating total: 4.90957 (26783), current: 4.90957 (26783)
Version 1.9.1
Released 07/07/2018
Updated 07/09/2025
“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" – Stuff.tv ***
*** “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 ***

LEARN OUR INCREDIBLE STORY:
Audiokitpro.com/synth

*** 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" - Synthtopia.com
"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:
audiokitpro.com/synth

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: hello@audiokitpro.com

SYNTH ONE FEATURES:
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!
AudiokitPro.com/Synth

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

OFFICIAL VIDEO: https://youtu.be/hwDNgCYowYs

"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

Version 1.9.1 release notes

Thanks Everyone! Synth One will always be FREE! No ads, no fees, no subscriptions. Just download and play. ++ Fixed: Bonus presets won't be re-added if you already have them ++ Fixed: If you were seeing duplicate presets in Bank A, those will now be cleaned up automatically PLUS, INCLUDES 1.9 UPDATE: ∙ The 80+ "Bonus" presets in Bank A are now unlocked for all users, no email required! (135 total presets in Bank A. Previously available only to users who signed up by email) ∙ Removed all requests for email sign-up, app reviews, and sharing. Provides a cleaner, distraction-free experience ∙ Optimized! Takes 30% less space. Streamlined the app for a smaller, more efficient size! ∙ Updated codebase to use modern Swift and the latest version of Xcode for improved stability and long-term support ∙ Removed outdated third-party libraries, including OneSignal, AppCenter, and MailChimp We appreciate everyone in the Synth One community. Enjoy making music! – Analog Matthew and rest of Synth One team

More Apps by AudioKit Pro (2)

A famous vintage electric piano was recorded and lovingly hand edited by award-winning producers. The tines. The noise. The feel. The vibe. It’s all here.

Price $3.99
Author AudioKit Pro
Type Instrument
Instrument type Sampler
Instrument sounds Keyboards, Piano
Supports Audio Unit (AU)
Rating total: 4.89139 (1022), current: 4.89139 (1022)
Released 10/28/2020
Updated 11/17/2023

With Hey Metronome, you can put your earbuds on and control everything with your voice, from tempo and meter, to beat patterns, to even what song you are practicing. Just say, “Hey metronome set the tempo to 120,” “Hey metronome, shuffle,” or “Hey Metronome, next song,” and you’re off.

Price $0.99
Author AudioKit Pro
Supports Ableton Link
Rating total: 4.89387 (424), current: 4.89387 (424)
Released 12/22/2019
Updated 12/31/2019