AudioKit Synth One J6

Name: AudioKit Synth One J6
Rating: 4.9 (1719 reviews)
Author: AudioKit Pro

NEW! Pro Synthesizer for You

Free · In‑App Purchases

1.7K Ratings
Ages

4+
Years
Category

Music
Developer

AudioKit Pro
Language

EN
English
Size

100.8
MB

J6 is Amazing & FREE! Have fun :) EVERYTHING INCLUDED, NO Ads or Subscriptions! (IAP are only for optional tips) SYNTH ONE J6 (Inspired by Juno-6 & Jupiter series*) Pro Quality. Actually Cool. And Yes, Totally Free. Powered by ethical machine learning, Synth One J6 delivers lush pads, deep basses, classic keys, and vibrant leads that feel truly alive. No ads. No subscriptions. No in-app purchases (unless you want to leave a tip). Just pure, expressive sound designed for creators of every level. WHAT MAKES IT DIFFERENT? Inspired by legendary synths like the Juno, Jupiter, and DeepMind series. It's not a clone. It's a new classic: built from the ground up with a custom sound engine, powered by ethical machine learning trained on vintage analog gear. You’ll hear the warmth, the punch, the vibe. Synth One J6 isn't an app, it's a creative instrument inspired by iconic analog synthesizers EASY TO USE The interface is intuitive and welcoming. Each function has a dedicated slider or knob. Simple for beginners and deep enough for pros. BONUS Enter your email during onboarding and get DMT CYMATICS Bank (120+ Bonus Presets) for over 520+ Presets total! INSTANT INSPIRATION With over 400+ presets, a classic step sequencer, dual arpeggiators, analog-style filters, tape delay, reverb, chorus, 3 LFOs, and real-time FX control, your creativity will never hit a wall. FEATURES: ∙ 400+ Presets and Features Included, ∙ Pro Version Included, Nothing to Buy! ∙ Lush, Expressive Vintage Synthesizer Sound ∙ Dual Assignable Touch Pads, manipulate FX in real time! ∙ FX: Glorious Reverb, Analog Tape Delay, Chorus, Crush, and more. ∙ 3 LFOs, over 60+ possible destinations, almost everything can be modulated! LFOs can even modify other LFOs ∙ Control it with a MIDI Keyboard, MIDI Learn to map your controls to the app ∙ Classic Arpeggiator! Hardware-style Arp, with extra features ∙ Vintage-style Step Sequencer ∙ ADSR for Amp & Filter Envelope! ∙ Jupiter Inspired, Deep Growling Filter ∙ Created by volunteers to support music education and access for all ∙ Works as a Plug-in Instrument in GarageBand and Logic for iPad Use as an Audio Unit (AUv3) Plug-in with iPAD Logic, GarageBand, AUM, Cubasis, and MORE! WORKS BY ITSELF ∙ “RECORD” button: Easily record your synth and sound fx, then export wav file No other apps needed! PERFECT FOR CLASSROOMS AND... STUDIOS Synth One J6 was built for musicians of all levels, with an interface that is intuitive for beginners and deep enough for pros. Especially great for schools and students who may not have access to paid apps. BUILT BY MUSICIANS, SHARED WITH THE WORLD Synth One J6 is more than just another synth app. Its the follow-up to AudioKit Synth One, trusted by musicians, producers, and schools around the world with millions of downloads. MADE FOR MUSIC. MADE FOR EVERYONE. Music should be for everyone. That is why Synth One J6 is truly free. No fees. No gimmicks. Just a beautiful synth that you can start using right now. Please help us share it. Tell a teacher. Tell a student. Tell anyone who’s dreamed of experiencing a vintage synthesizer but lacked the opportunity. Because music belongs to everyone. LEARN THE EXCITING STORY: audiokitpro.com/synthonej6 * LEGAL NOTICES This app has no affiliation or endorsement from Roland Corporation. It is not a clone of the Juno-6, Juno-60, Juno-106, Jupiter-8, or any other synthesizer. While we were inspired by the sound and legacy of these iconic instruments, this is an original creation, built from the ground up. All product names, trademarks, and images mentioned are the property of their respective owners and are used only to describe the inspiration behind this app and for purposes of reference. Their inclusion does not imply any association, affiliation, or endorsement. This project is free and was created solely to promote music creation and education. We sincerely respect the incredible work of Roland and other manufacturers in shaping music history.

Ratings & Reviews

4.9

out of 5

1.7K Ratings

GET THIS APP!
06/22/2025

TheOneIronHorse
I either get or purchase all AudioKit apps as a matter of course, because they’re that good! As many of you know, after a while, synths can start to sound “kind of” the same, other than layouts or skins being different. And some synths have their own flavor that distinguishes them from the others. THIS IS ONE OF THOSE SYNTHS! And the “in-app purchases” mentioned in the slate is merely so you can contribute to the developer. May I suggest that you do so?This synth is a game-changer!!! Bravo to you all!!!
GET THIS APP!
06/22/2025

TheOneIronHorse

I either get or purchase all AudioKit apps as a matter of course, because they’re that good! As many of you know, after a while, synths can start to sound “kind of” the same, other than layouts or skins being different. And some synths have their own flavor that distinguishes them from the others. THIS IS ONE OF THOSE SYNTHS! And the “in-app purchases” mentioned in the slate is merely so you can contribute to the developer. May I suggest that you do so?This synth is a game-changer!!! Bravo to you all!!!
This app Is so close to perfect, but…
11/07/2025

RobotWithADHD
I think that, if an app were to have full support with their previous versions, it would have to have all the previous effects present from those versions. What I’m trying to say is that there are 2 things missing from this version and the synth one; FM synthesys, and distortion. For the first one, all you would need to do is be able to rewire an oscilator to modulate like an lfo in a small drop-down menu. (Or independent fm knobs would be nice too). For the second one, any classic 80’s distortion would work wonderously (saturation would be nice to thicken sounds). Also (last thing), I know that these are all likely unsupported with the original J6, but they would help to move people over from synth one into the new app. I know it takes a lot to add features like this, but it would go a long, long way in improving this app, and user’s experience with them.
This app Is so close to perfect, but…
11/07/2025

RobotWithADHD

I think that, if an app were to have full support with their previous versions, it would have to have all the previous effects present from those versions. What I’m trying to say is that there are 2 things missing from this version and the synth one; FM synthesys, and distortion. For the first one, all you would need to do is be able to rewire an oscilator to modulate like an lfo in a small drop-down menu. (Or independent fm knobs would be nice too). For the second one, any classic 80’s distortion would work wonderously (saturation would be nice to thicken sounds). Also (last thing), I know that these are all likely unsupported with the original J6, but they would help to move people over from synth one into the new app. I know it takes a lot to add features like this, but it would go a long, long way in improving this app, and user’s experience with them.
Excellent, but be careful.
11/19/2025

LKHDmusic
Be very careful messing with high filter Rez while sweeping the cutoff. This can hit some feedback tones that’ll blow out your speakers or your ears. I definitely suggest using a limiter for such experiments when using the AUV3 or just keep the volume low. A well made and powerful synth. Has a few issues in iPad, but update may fix.Update: Those iPad problems were fixed. This app is a game changer.
Excellent, but be careful.
11/19/2025

LKHDmusic

Be very careful messing with high filter Rez while sweeping the cutoff. This can hit some feedback tones that’ll blow out your speakers or your ears. I definitely suggest using a limiter for such experiments when using the AUV3 or just keep the volume low. A well made and powerful synth. Has a few issues in iPad, but update may fix.Update: Those iPad problems were fixed. This app is a game changer.
Fun app! But it’s buggy…but it’s free…but it’s “nagware”
12/10/2025

MC Duckbutter
I had the original audio synth one app on an older iPhone with an older iOS version. It worked perfectly. This new version (on iOS 26.1 on iPhone 17 Pro) has problems with polyphony: if you play keys that are adjacent to each other or even just one step apart, both keys often won’t play simultaneously. I only switched to this new version of the app when I noticed the original app became unresponsive and laggy on my new phone. But thanks for a nice and free app! The sound quality is fantastic even if playability is somewhat lacking.
Fun app! But it’s buggy…but it’s free…but it’s “nagware”
12/10/2025

MC Duckbutter

I had the original audio synth one app on an older iPhone with an older iOS version. It worked perfectly. This new version (on iOS 26.1 on iPhone 17 Pro) has problems with polyphony: if you play keys that are adjacent to each other or even just one step apart, both keys often won’t play simultaneously. I only switched to this new version of the app when I noticed the original app became unresponsive and laggy on my new phone. But thanks for a nice and free app! The sound quality is fantastic even if playability is somewhat lacking.

Thanks, everyone! New Features, by popular demand: • MIDI Program Change added to AUv3. J6 now responds to MIDI Program Change in hosts like AUM. • Alternate “A” tuning now recalls with AUv3 saved state and presets. Reload projects at 432 Hz (or any tuning), and save different tunings per preset. Use the new Lock button next to tuning to keep the same tuning while you change presets. • Close button added to the Bluetooth MIDI Keyboard popup (especially useful on iPhone). More updates coming soon. Thanks!