# AudioKit Synth One Synthesizer — Feature-packed Pro Synthesizer > Free, open-source professional iOS synthesizer with 300+ presets and MIDI support. (iPhone/iPad app by AudioKit Pro.) - Source: https://appshunter.io/ios/app/audiokit-synth-one-synthesizer/id1371050497 (this page in markdown: same URL + `.md`) - Developer: [AudioKit Pro](https://appshunter.io/developer/1307785645) - Category: Music, Education - Price: Free - Rating: 4.90/5 from 26,818 App Store ratings · 538 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 34 MB - Languages: American English, Brazilian Portuguese, Chinese (Traditional, Taiwan), Turkish, Chinese (Simplified, China), French (France), Japanese - Released: 2018-07-07 - Data updated: 2026-08-26 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/audiokit-synth-one-synthesizer/id1371050497/reviews.md ## What is AudioKit Synth One Synthesizer? “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 ## Key features - Over 300+ Presets - MIDI Support - Vintage-Style Sequencer - Analog Filters - Expressive Arpeggiators - Open-Source ## What do users think of AudioKit Synth One Synthesizer? Overall sentiment: positive **Pros** - 😎 Easy to use - 🔥 Clean patches - 👍 Awesome synth - 🎸 Works great with GarageBand - 🤩 Absolutely stunning - 💥 Incredible dynamic articulation - 🎹 Powerful and intuitive - 🎶 Vast set of features - 🔊 Amazing quality - 🤘 Spanking awesome - 🤘 Love the concept - 🎹 Immediate access to controls - 🎨 Versatile sound creation - 🎚️ Smooth and responsive - ⭐ Packed with presets - 🎧 Excellent sound quality - 🎛️ Great interface and patches - 🎛️ Powerful soft synth - 🎛️ Stunning sounds - 🎛️ Awesome all-around **Cons** - 🤔 No AU support yet - 🤔 Crashes with Audiobus 3 - 🤔 Poor palette of sounds - 🤔 Mod wheel issues - 🤔 Occasional crashes - 🤔 High battery consumption - 🤔 Keyboard issues on iPhone **Commonly reported bugs** - Login screen freezes - Incompatible with older devices - Keyboard issues on iPhone - Crashes with Audiobus 3 - Mod wheel issues **Most requested features** - Add AU support - Add just intonation feature - Add dotted-8th-note delay option - Add more sound packs - Add drum machine/sequencing capabilities - Add more complex waveforms - Add multi-filter support - Add more than 2 oscillators - Add ability to record MIDI tracks - Add support for Bluetooth MIDI controllers - Add dark mode option - Add advanced analytics dashboard ## Recent user reviews (10 of 538) All indexed reviews: https://appshunter.io/ios/app/audiokit-synth-one-synthesizer/id1371050497/reviews.md ### 5/5 — You will not regret getting this app *2026-07-19, version 1.9.2* This is more than app man it’s a resource for anyone reguardless of how skilled or knowledgeable you are in making music. I just can’t recommend it enough check it out and see what you can make ### 5/5 — Excelente *2026-07-08* Ampla biblioteca de sons bem elaborados, sem propaganda, funciona bem ### 5/5 — The best app ive ever seen *2026-07-03, version 1.9.2* Its the most practical and fun app ive ever seen for composing ### 4/5 — 黒鍵が鳴らない *2026-05-27* スケールを12ETにしてアプリの鍵盤を弾くと黒鍵が半音下の白鍵と 同じ音になってしまいます。 しかもCの♯がレの白鍵になってしまいます。 以降繰り返し 修正お願いします。 ### 5/5 — Perfect for metal music *2026-05-22, version 1.9.2* The presets on this app are sick. I like it. It has perfect. Sounds if you want to. Make some metal sounds for metal music. I would rate this a 10. ### 5/5 — 고퀄리티임 *2026-05-06* 근데 녹음 기능이 있었으면 좋겠음 (내가 모르는 걸 수도) 어쨌든 짱임 AudioKit 앱 진짜 좋음 굳굳 👍 ### 5/5 — Absolutely Fantastic with one wish… *2026-05-03, version 1.9.2* This synth is absolutely mind blowing and just keeps getting better. My one wish (not complaint) is that it gets an update allowing it to be multitimbrial. I know, you can use AUM and run multiple instances but I’d love to just fire it up and run different patches on their own midi channels. However, it’s free and incredible so, again, not a complaint! Just one thing that, to me, would make it perfect! Thanks to everyone who made this app what it is! ### 5/5 — This app may genuinely be the only reason I’m still doing music years after quitting piano lessons *2026-04-25, version 1.9.2* I randomly got this app on my iPad when I was a kid and now, years later, I’m trying to actually learn music production (I’m not, like, good at it or anything but still) I probably wouldn’t still be making music as an adult if this app hadn’t introduced me to synths ### 5/5 — *****************🤠 *2026-04-21, version 1.9.2* Merci pour les nouveau son Merveilleux ### 5/5 — This eventually ,..became my favorite, from Audio Kit . *2026-04-03, version 1.9.2* It has just enough of,….a little bit of each Paged Effect Functions which make all youre devices Shine apart ,..the Deep and Killer REVERB like no other ,..I always wished I could have a pedal so I could run my guitar through that excellent R-Verb ,…you all did create the REVERB APP HOWEVER ,…AND DANG IT I JUst ,… REALIZED ,…IVE NEVER DOWNLOADED IT AND RUN MY FIDDLE OF Def & Distortion,….through it into A good DAW,…keep creating , Talent in the Music Biz is rare and Tainted with Cheap Tricks ,…hey now I gotta listen to them ,..that was a psychic , related EDUCATED WISH ….,!!! ## Frequently asked questions about AudioKit Synth One Synthesizer ### What is AudioKit Synth One? AudioKit Synth One is a free, open-source professional synthesizer app for iOS devices. It provides a wide range of features for creating and manipulating sounds, including over 300 presets, various oscillators, filters, and a built-in sequencer. ### What are the key features of this synthesizer app? Key features include a hybrid analog/FM poly synthesizer engine, over 300 presets crafted by professional sound designers, MIDI input for external controllers, a vintage-style 16-step sequencer, classic poly arpeggiators, and multiple filter types. ### Is AudioKit Synth One free to use? Yes, AudioKit Synth One is completely free, fully functional, and ad-free. It is also open-source, meaning there are no in-app purchases or hidden costs to unlock features. It is designed to always remain free. ### What devices is AudioKit Synth One compatible with? The app is optimized for newer iPads and iPhones for best performance. It requires an iPhone 6 or higher screen size and will not work on older devices like the iPhone 5/SE or Touch devices. ### Who would benefit from using this app? This app is ideal for musicians, producers, and anyone interested in music production or sound design. It allows users to create their own synthesizer sounds, learn the basics of music production, and use it with MIDI keyboards and controllers. ## Version history (last 5 releases) ### 1.9.2 — 2026-01-22 Thanks Everyone! NEW SOUNDS: ++ NEW: Wabi Sabi Waves preset Bank Sound Designer Taeo has generously donated 170 presets You can support his work at https://wabisabiwaves.gumroad.com/ ++ Fixes Bluetooth MIDI Popup ### 1.9.1 — 2025-07-09 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 ### 1.9 — 2025-07-01 Thanks everyone! Synth One and Synth One J6 will always be free. No ads, no fees, no subscriptions. Just download and play. NEW UPDATE, Thanks to Analog Matthew: ∙ 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 ### 1.8.1 — 2021-04-02 THANKS! FREE Learning Synthesis & Synth One manual in this update! + Full Free Synth Tutorial iBook by award-winning sound designer Francis Preve + Preset bank called "Synth Tutorials" are a companion to that book + We are all volunteer musicians & coders. Thanks for your help! + Download is in the "About" page. Or you can find it on the Books app and iTunes: http://books.apple.com/us/book/id1544368523 Please note that we all are volunteers. 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 hello@audiokitpro.com The full & complete source code is available: https://github.com/AudioKit/AudioKitSynthOne ### 1.8 — 2020-11-15 THANKS! New PRESETS in this update: + New bank of 42 presets called "Synth Tutorials" by Francis Preve + Full Free Synth One Tutorial iBook coming soon, these presets are a companion to that book + We are all volunteer musicians & coders. Thanks for your help! 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 hello@audiokitpro.com The full & complete source code is available: https://github.com/AudioKit/AudioKitSynthOne ## Apps similar to AudioKit Synth One Synthesizer | App | Rating | Price | Category | | --- | --- | --- | --- | | [GarageBand](https://appshunter.io/ios/app/garageband/id408709785) | 4.1 (116,512) | Free | Music | | [Piano Pro & Drum Music Studio](https://appshunter.io/ios/app/piano-pro-and-drum-music-studio/id1563206106) | 4.6 (1,312) | Free | Music | | [Synth Pro: Analog Synthesizer](https://appshunter.io/ios/app/synth-pro-analog-synthesizer/id1635988723) | 4.6 (544) | Free | Music | | [Piano ٞ](https://appshunter.io/ios/app/piano/id1126477246) | 4.6 (169,111) | Free | Music | | [BandLab – Music Maker & Beats](https://appshunter.io/ios/app/bandlab-music-maker-and-beats/id968585775) | 4.7 (500,118) | Free | Music | | [Sunrizer synth](https://appshunter.io/ios/app/sunrizer-synth/id443663267) | 4.7 (183) | $12.99 | Music | ## More apps by AudioKit Pro - [HOUSE: Mark I](https://appshunter.io/ios/app/house-mark-i/id1481734663) - [AudioKit Hey Metronome](https://appshunter.io/ios/app/audiokit-hey-metronome/id1492023479) - [Jam with Jordan](https://appshunter.io/ios/app/jam-with-jordan/id1524167609) - [AudioKit Reverb](https://appshunter.io/ios/app/audiokit-reverb/id1601314353) - [AudioKit Drum Pad Playground](https://appshunter.io/ios/app/audiokit-drum-pad-playground/id1606714449) All apps by AudioKit Pro: https://appshunter.io/developer/1307785645 ## Related topics [synthesizer](https://appshunter.io/ios/topics/synthesizer) · [synth](https://appshunter.io/ios/topics/synth) · [music creator synth](https://appshunter.io/ios/topics/music-creator-synth) · [audiokit](https://appshunter.io/ios/topics/audiokit) · [synthesizer touch](https://appshunter.io/ios/topics/synthesizer-touch) · [synthesizer electronic](https://appshunter.io/ios/topics/synthesizer-electronic) · [synth sequencer](https://appshunter.io/ios/topics/synth-sequencer) · [piano synth](https://appshunter.io/ios/topics/piano-synth) · [audiokit synth one synthesizer](https://appshunter.io/ios/topics/audiokit-synth-one-synthesizer) · [synth one](https://appshunter.io/ios/topics/synth-one) · [analog synth](https://appshunter.io/ios/topics/analog-synth) · [audiokit synth one](https://appshunter.io/ios/topics/audiokit-synth-one) · [sound design](https://appshunter.io/ios/topics/sound-design) · [korg ims 20](https://appshunter.io/ios/topics/korg-ims-20) · [akai professional](https://appshunter.io/ios/topics/akai-professional) · [synthesizer piano](https://appshunter.io/ios/topics/synthesizer-piano) · [fm synth](https://appshunter.io/ios/topics/fm-synth) · [audiokit synth one j6](https://appshunter.io/ios/topics/audiokit-synth-one-j6) · [garageband plugins](https://appshunter.io/ios/topics/garageband-plugins) · [v piano synthesizer audio beat](https://appshunter.io/ios/topics/v-piano-synthesizer-audio-beat) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*