# AudioKit Synth One J6 + AUv3 — user reviews > 167 indexed App Store user reviews of AudioKit Synth One J6 + AUv3 by AudioKit Pro, rated 4.90/5 from 2,510 ratings. - Source: https://appshunter.io/ios/app/audiokit-synth-one-j6-plus-auv3/id6741535277/reviews - App overview in markdown: https://appshunter.io/ios/app/audiokit-synth-one-j6-plus-auv3/id6741535277.md - Rating breakdown: 5★ 2,405 · 4★ 80 · 3★ 15 · 2★ 3 · 1★ 7 ## Is AudioKit Synth One J6 + AUv3 safe? AudioKit Synth One J6 + AUv3 appears safe based on user ratings. The AppsHunter Safety Score for AudioKit Synth One J6 + AUv3 is 98 out of 100. This assessment is based on 2,510 user ratings, with an App Store average of 4.9 out of 5. Of 2,510 App Store ratings, 99.0% point to a safe experience, 0.6% suggest some concerns, and 0.4% point to a risky experience. ## Is AudioKit Synth One J6 + AUv3 legit? AudioKit Synth One J6 + AUv3 appears to be a legitimate app. The AppsHunter Legitimacy Score for AudioKit Synth One J6 + AUv3 is 93 out of 100 points across 7 verification signals from App Store and developer data. ## What do users think of AudioKit Synth One J6 + AUv3? Reviews of AudioKit Synth One J6 + AUv3 are mostly positive: the Music app is rated 4.9/5 from 2.5K App Store ratings. What users like most: amazingly inspirational, awesome and free. Summarized from real user reviews. **Pros** - 🚀 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 ## Newest reviews (19 of 167) ### 4/5 — Most of your synths I’ve been on tonight 12th September 2026 *2026-09-12, version 0.99.6* So far tonight I’ve been on nerd, king of fm, j6 ,j8 , king of digital all in Cubasis 3 in auv3 only. I press on a preset then I press on another preset then it automatically moves to the first preset I picked and sometimes it jumps to a different instrument. One minute it’s a pad then jumps to an arp I just cannot keep it on one preset. These synths are awesome, I also have synth one and pro-A5, viral , king of bass which I haven’t used to see if they have the same problem or am I doing something wrong? If not pls fix ### 5/5 — Incrível *2026-09-05* Ótimo app fantástico!!! ### 5/5 — GOAT *2026-08-28* as u can c its a goat app🙏🏾 friendly for poor me🤩🤩🤩🤩🤩😍😍😍😍😍😍🤤🤤🤤🤤 ### 5/5 — One of the best software synths out there (and the rest are the developer’s other synths!) *2026-08-27, version 0.99.6* So musically playable I was able to record an entire album on a plane trip, each track using a single patch, the step sequencer and sound modulation controls! AudioKit Pro has developed the best sounding and most playable phone synths on the planet—and they sound like they’re from another one! ### 5/5 — Incredible *2026-08-19, version 0.99.6* I don’t know why or how you manage to give this away without ads, scraping user data or just straight up making it paid… I think you must be a saint on that front, seriously. As for how good it is? It’s one of the best synths on the store in my opinion. Thank you so much for this. ### 5/5 — Incredibly good *2026-07-18* The sound of it is insane. Simplicity really drives your creativity forward. I’m creating patches every single day. I only wish there was a vst version of it, so I could fire it up in Bitwig. ### 5/5 — It is amazing that is free *2026-07-02, version 0.99.5* I love this app you can use as plugin and create a lot different sound ### 5/5 — Awesome! What an App! *2026-07-01, version 0.99.5* Wow this thing is great! So much fun! ### 5/5 — Unfair *2026-06-21, version 0.99.5* It’s always the great ones that know how to function in society properly. What am I speaking about? Principles, character, good folk. The fact this is free is criminal. Do what they ask and leave a honest review. It’s crazy, cause I know that’s what they want. They don’t want you to say you like it if you don’t. What they do want is a balanced critique. So if you do not like it say why. Anyway the sound quality is bonkers. And not just like for an app. No the sound quality is ridiculous. Hook up a decent midi to this and it’s your fault if you can’t get something properly done. Ok that’s it. I only poke my head out of my cave to leave these kind of things when I’m emotionally moved. I didn’t even mention the free stuff in addition to. Seriously you (synth one) should ask for something. Seriously. ### 4/5 — My review *2026-06-16, version 0.99.5* Good, especially at Melodie’s ### 5/5 — Tiny but sounds Great !!! *2026-06-15* Nice useful instrument ….like his Great Brother !!! Tiny but Great !!!! ### 5/5 — THANK YOU. THANK YOU. *2026-06-10, version 0.99.5* Thank you so Much. ### 5/5 — Awesome synth *2026-06-10, version 0.99.5* Intricately and organically crafted sounds...love this one ### 5/5 — Insane this is free *2026-05-28, version 0.99.4* Shoutout to dev for making this happen for us ### 5/5 — Amazing 🔥🔥🔥🔥🔥 *2026-05-27, version 0.99.4* Download asap if you love music no guessing sounds amazing and it’s free. ### 4/5 — So good but…. *2026-05-23, version 0.99.4* This app is near perfect . Note to the developers : please allow this to download/run on Macs as well as iOS . It would be very very useful to be able to bring projects with this and other audiokitpro AUs from iPad to Mac and back . It works with your amazing Kings of FM please make this app and other ms available on Mac too ! ### 5/5 — Top *2026-05-19* Excelente, como todos apps da Audiokit ### 5/5 — Thanks *2026-05-07, version 0.99.3* This app is literally a gift to humanity ### 5/5 — Truly, Truly Unbelievable! *2026-05-06, version 0.99.3* Its very rare that i write a review these days with the zeitgeist seemingly bombarding us with discontent at every turn, but — this synth motivates me. I cannot believe that this is free! In my personal opinion, this provides a warmer, fuller version of the real analog synth sound than any other i’ve heard yet and i’ve been buying ios synthesizers for about 15 years. Beautiful effects contribute to the sound for sure but remove all the effects and it still sounds smooth, lush and warm. I am primarily a guitar player and this synth truly feels like the tone of a singing yet biting tube amp. The kind people pay big money for. Sometimes a developer, due to who knows what factors, comes up with something exceptional beyond words and this synth in my opinion is one of those instances. I don’t know how much better software synth can sound because this really does sound like the intended original. Well done Audiokit! And better than well done for making this piece of technical art free. That, in our age of selfishness is almost as great a thing as the sound itself. Thank you devs. ## Most critical reviews (10 lowest-rated) ### 1/5 — Consommation anormale de la batterie *2026-05-04* Malgré le fait d’avoir quitté complètement l’application, elle me consomme un quart de la batterie sur la journée. Je ne sais pas comment faire pour régler ce problème. ### 1/5 — High background usage *2026-02-14, version 0.97* What is the app doing in the background, consumed 22% of a 17 Pro battery recently. ### 1/5 — Doesn’t Work on GB *2025-10-18, version 0.93.2* If you use GarageBand - don’t waste your time with this au3. ### 1/5 — “Audio Unit Extension Quit” Message Showing Up Constantly *2025-08-27, version 0.93.2* I can’t go three seconds without this message popping up. I try to place one track down with this app in GarageBand and the message pops up and pops up and pops up. It’s constant. ### 1/5 — Support ? *2025-07-09, version 0.93.1* Polyphony on iPad is great but buggy on iPhone also I emailed on 21 June & 27 June asking a simple question - can I use these synths in commercial releases as I can find no licensing information and cannot use them without this information ### 2/5 — Unusable due to clicks *2026-01-15, version 0.95.4* Still unusable because of the omnipresent clicks that were introduced in version 0.95 and haven’t been fixed since. Also the filter keytrack still doesn’t work. Very buggy in Cubasis 3, shame cos the synth has a lot of potential and has that classic analog sound. ### 2/5 — Reason for this quitting on me is? *2025-10-18, version 0.93.2* I use multiple audiokit apps, why all the quitting? I use free ones and various paid ones, something I don’t know? ### 3/5 — Fun app! But it’s buggy…but it’s free…but it’s “nagware” *2025-12-10, version 0.95.1* 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. ### 3/5 — Bluetooth MIDI still broken *2025-10-31, version 0.95.1* …freezes the app, which is a shame, because otherwise a decent sound ### 3/5 — Missing transients *2025-09-27, version 0.93.2* I appreciate this being free….but I already uninstalled. You can’t make an 80s synth with missing transients. It’s smothered sound doesn’t pierce through the mix without those attack transients of the originals ## Most praised reviews (10 highest-rated) ### 5/5 — Amazing emulation *2026-10-16, version 0.999.6* It’s perfect ### 5/5 — HAVE MY BABIES !!!!!!!!!!!! *2026-10-13, version 0.999.6* Holy guacamole. ### 5/5 — sound great *2026-10-08, version 0.999.6* skipping the not existent price Very capable synth. Don’t ignore this one ### 5/5 — Altared *2026-10-08, version 0.999.6* Yes!! Been waiting for this to happen with these excellent products much used on iPad, now to be introduced to Tracks on a Mac. Many thanks for developing these tools. ### 5/5 — PLEASE ADD Novation Launch Control XL 3 Midi *2026-10-08* Hey, great app! I love how authentic it is to the real juno v6! Id love to connect it to my launch control xl 3 tho! Would love to have a midi preset here :)) ### 5/5 — LOTS OF FUN *2026-10-05, version 0.999.5* AWESOME SOUNDS, JUST LOVELY. ### 5/5 — My first synth *2026-09-29* Was a Juno 6.! I transported it in a hardcase per bike, and it was a hard work. 😉 But so i learned to love synthesizer sounds. So every app that is more like the original is my beloved app. Juno was a large hardware, so i don’t want the origional. But the programming and sounds i mis. The potis, the arp. It was great. Thank you for a mac app version. ### 5/5 — Legit!! *2026-09-25, version 0.999* Latest update sounds great! My only request is that you please make the LFO delay fader fade in with a slow attack like the hardware. This is one of the best parts of the synth in my opinion. Currently, the delay fader seems to delay the onset of the lfo but the onset is more like a sudden trigger where lfo goes from 0 to the set value instantly after a set amount of time. ### 5/5 — Good for experimenting with music *2026-09-16, version 0.99.6* Amazing so glad there are free apps glad you have free and paid versions of stuff thank you for helping me experiment with music hope you do well ### 5/5 — Must have *2026-09-14, version 0.99.6* This is an excellent sounding synth and works perfectly with Logic Pro for iPad. I wish there was a Mac version too because I like to start projects on my iPad and finish them on my Mac Studio. Not a huge deal. I just bounce in place and export a wav file into Logic Pro on my Mac instead of a midi file. I’ll always have the original midi file on my iPad if I need it. Hook a midi controller up to this synth and you will be amazed. It has a lot of features and they’re all easy to access. The presets are great but you’ll really want to mess with things and make your own sounds. The sequencer is great as well. I can’t believe this is free. --- *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 2026-11-08.*