# Roxsyn Guitar Synthesizer — user reviews

> 52 indexed App Store user reviews of Roxsyn Guitar Synthesizer by Yonac Inc., rated 4.70/5 from 90 ratings.

- Source: https://appshunter.io/ios/app/roxsyn-guitar-synthesizer/id1472450599/reviews
- App overview in markdown: https://appshunter.io/ios/app/roxsyn-guitar-synthesizer/id1472450599.md
- Rating breakdown: 5★ 74 · 4★ 9 · 3★ 3 · 2★ 0 · 1★ 4

## Newest reviews (13 of 52)

### 3/5 — Was expecting something useful

*2023-05-22*

Yonac makes some great apps. My favorites are the Steel Guitar Pro and the Galileo 2 in terms of usefulness and the way they fit with other apps and midi control effects in an app like AUM. I don’t have Magellan Synth 2 or the newest Trooper, which I would love to check out, but haven’t found the reason to spend $15 for each yet. 

There is a lack of consistent quality guitar interface synths with midi translation that maintain iOS updates. The decent ones seem to suddenly vanish - like midimorphosis.
That being said, that’s not what this app is. In fact there is no midi control function. It’s just a very thick and oozing filtering app that takes a guitar signal and destroys it with effect parameters commonly found on oscillation type synthesizers, with filtering, arping, and all of the other common audio effects, plus lots and lots of distortion. 
I have yet to find a use for it honestly, which is weird considering how many presets it has - presets that have very little range. Of you want to go from noisy lower pelagic oceanic deep distorted and modulated reverb to lush distorted low pass filtered arpeggiated offset delays that have no discernible pitch modulation, then there are millions of presets for everything in between those two. 
If there were better clean tones, o might be able to use this. 

A rare miss imo for Yonac, but you might find it vastly and useful.

### 4/5 — I love the response, but...Developers please add some features

*2020-12-09*

This is the best guitar synth that picks up all the dynamics that other midi guitar synths don’t..It doesn’t have limited sound that gives off like the other apps, its very expressive with stuff like bending notes and vibrato.

I just wish that the voices provided in this app also included saw wave, sine wave etc.

All the sounds start sounding the same after a while.

This app has a lot of potential to have a guitar player/ synthesist change the instrument of a synthesizer.  The guitar is way more expressive than the piano because of how human it is to press a note on a fret and have it slightly off pitch when bending it just a little..the piano is so rigid in playing notes..sure they have a pitch wheel but its not as expressive as shaking notes on a guitar with your finger or whammy bar.

If they have the traditional sounds like the sine wave and sawtooth, synthesizer players might consider playing a guitar instead..like what if there can be a foot pedal that can allow you to oscillate manually like a wah pedal.

Please add the feature of adding the traditional sine wave and sawtooth, triangle, square etc. voices

### 4/5 — Impressionnant

*2020-10-09*

Le tracking est quasi parfait, même sur des traits rapides avec un instrument acoustique et capté par le micro de l’Ipad. Les nombreux presets sont de qualité inégale, ça tourne vite à la boulimie, mais la section arpégiateur vaut vraiment le détour.

### 4/5 — Some presets make no sound

*2020-09-20*

I really like the app. All in all it works very good. 
Only two issues. 
Some of the presets produce no sound. Most do, but some just have no sound. 
Also, it’s output level is a little to inconsistent and low for actual live use. 
Otherwise, very fun, and 100% worth downloading.

### 4/5 — 좋은 이유

*2020-04-22*

장점.
의도치 않은 음들이 잡히는 걸 거의 없다시피할 정도로 최소화시켜줌. 미디픽업/미디기타어플은 미디신호 잡느라 어쩔 수 없이 지저분한 소리까지 다 잡혀서 인식해서 연주 불가할 정도인데, 이정도면 진짜 단비같은 좋은 어플.
단점.
기본 프리셋도 좋긴 한데 원하는 소리 뽑으려면 좀 붙잡고 시간 보내야 함. 그래도 ‘직관적이다’를 뽐내면서 기능 별로 없는 다른 어플들보다는 차라리 이쪽이 나음.

### 4/5 — Great app!

*2020-01-30*

I bought this app because I thought it had the ability to be used as a MIDI instrument on other DAWS like midi guitar 2 but it seems like this is not capable. Otherwise great app. I would give it 5 stars if it had that function.

### 3/5 — Pas un vrai synthé

*2020-01-21*

Il ne s’agit pas à proprement parler d’un synthétiseur puisqu’aucun générateur d’onde n’intervient. Il s’agit plutôt d’un processeur d’effets complexe mêlant distorsion multibande, filtres et effets de modulation. Les sonorités sont plutôt convaincantes et respectent le timbre naturel de la guitare même si on finit par tourner un peu en rond. La latence est présente, bien que faible. Bref ça ne remplacera pas un Boss SY-300 ! En revanche, l’arpégiateur est une tuerie ! On retrouve l’excellence ergonomie des synthés Yonac et on se met rapidement à faire des trucs complètement fous !

### 5/5 — Insta-buy app! Nice work Yonac

*2019-12-12*

This app is a must have if you play guitar and enjoy creating music on your iOS devices. If you don’t think you need this or don’t think you will use it - just try it. As a guitar player and a keyboard player, this app allows you to get to a level somewhere in between these 2 instruments that you can’t do any other way IMO. Great work Yonac!

### 5/5 — Exactly what was needed

*2019-12-11*

I’ve previously owned a Boss SY-300 and now have an EHX synth 9 which are real pedals that are the closest to what this app does. I am now going to sell them because this app is that good. £20 is a bargain given it works. Those other pedals are very expensive. I use a Spanish guitar with a pre amp system so that could be responsible for some of the patches not working well but adjustments can be made. Very happy. Polyphonic and really big usable sounds.

### 5/5 — Superb and exciting

*2019-11-14*

Fantastic list of presets and more knobs than an octopus! Wonderful sounds, tracks flawlessly (using Sonuus I2M). Works perfectly in Cubase and Garageband. I’ve been playing guitar synths for decades and this is hands down the best I’ve ever owned. I really can’t praise this more highly. Recommended!!

### 5/5 — Incredible app!

*2019-10-17*

With a bit of tweaking, you can coax some amazing sounds out of this. I rarely use presets on my synths, but had a blast just trawling through the ones provided.
The real fun comes when you cook up your own sounds though. If I had to nitpick, the “oscillators” are a bit limiting. I’d love to see an update that improved on this section. But as it stands this is easily the most successful implementation of a Guitar synth on iOS.

### 3/5 — Love but problems...

*2019-10-06*

Not showing up as AUV3 and I can’t change the sample rate even though I’m using irighd2. Sounds and tracking are amazing however. Need these problems fixed though and will change to 5 stars

### 5/5 — Better than a $200 pedal

*2019-10-05*

This sounds better than Boss’s much-hyped new $200 synth pedal. The Boss demos/videos I’ve seen all have cheesy ‘80s synth sounds; if I wanted to play those, I’d just use a synth. The special sauce here is that Roxsyn produces more complex, interesting sounds (though it can still sound like Miami Vice if you want that.)
The tracking and polyphony are quite good. Not perfect, but once you tweak the tracking it’s quite easy to play. It does glitch sometimes, but I embrace that as part of the sound. (20 years from now that’ll be “retro” and everyone will be emulating tracking glitches...)

## Most critical reviews (10 lowest-rated)

### 1/5 — Zero tech-support if you have a problem

*2023-01-26*

It pains me to give this a negative review because the videos look so cool but after paying for it it has some problems and I am not able to successfully run it. I’ve reached out to tech-support through their website and emails multiple times over the past few weeks with zero response. I feel like my money has been stolen.

### 1/5 — 1-star for hobbling GarageBand on Apple Silicon, and not responding.

*2022-11-25*

Things do go wrong.  But this is two of this developer’s apps now, consistently cause GarageBand AUv3 issues, this is by far the worst for this (pls see below).  I gave it 3 stars for the hobbling of GarageBand, but now it’s one star because I think it’s being ignored.  I actually slightly object to being an unofficial test-pilot for the app-makers.  Being a test-pilot and the issue being ignored, for 3 apps (just got KASPAR and it’s got it’s own issues), is too much, sorry Yonac, please do fix it.  If it’s ongoing work, fine.  But that needs said, is all.

Love Yonac apps, have a lot of them, they are great. But, keeping up with Apple’s changes is stretching some developers it seems, and while some issues can be a quality issue, this literally stops the use of GarageBand, if it is placed an any FX list, for any instrument. Long story short, you are sent round and round, when you try to exit - but you can never exit and save. I have let Yonac support know. I won’t use an app if there is a fair chance it will lose me my work - and this is not a 50/50, it’s absolutely guaranteed, it does it ten out of ten times. Then I delete Roxsyn from the single track it’s on, and voila, all works as normal. Apple iPad Pro M1. 12.9” and iPadOS 15.7.1 so it could just be Apple Silicon affected? I don’t know. It’s above my IQ grade! Sorry Yonac, hope it can be fixed soon. I also have a similar issue with Yonac’s Galileo Organ 2, but I mentioned that to their support as well, it’s more like half the time, it fails to permit exit/save in GB.

**Developer response:** Hi! We use and test with Garage Band quite frequently. We haven't been able to replicate these issues, so hopefully they have been resolved. If not, please contact us. Thanks - The Yonac Team

### 1/5 — Uniquely unusable

*2022-10-01*

Noisy af, the patches all sound the same- none of them offering a sound that is usable in a musical setting. Better results can be easily obtained using a pitch shifter a delay and mod fx (all available for FREE). Great looking interface that doesn’t do much of anything useful.
I love the idea though- hope in the future this is updated with real oscillators and a sound palette worthy of the name “guitar synth”.

### 1/5 — Doesn’t work

*2022-06-30*

I can’t get this to work in any shape or form. Can’t even get a single sound out of it. I have ToneStack pro and have zero issues with that so no idea why this doesn’t work. I’ve gone through every tips video, watched loads of other YouTube videos and still not found anything that makes this thing make any noise. I’ve tried reaching out to support for help but like other reviews I’ve had no response.

### 1/5 — Doesn’t work wih external midi

*2020-10-07, version 1.0*

It even recognizes my midi controller but just won’t work...and sine it has no built in virtual keyboard...it’s practically useless right now

### 1/5 — No support

*2019-10-10*

Support emails have not been answered.

### 1/5 — Oddsox

*2019-08-04*

Good but crashes

**Developer response:** Please contact us via our support page (www.yonac.com/support) and we can help you troubleshoot your issue. - The Yonac Team

### 1/5 — no auv3

*2019-08-01*

not working in cubasis as a auv3

**Developer response:** Hello! Roxsyn definitely works in Cubasis as an AUv3. Please visit our support page (www.yonac.com/support) and we can help you troubleshoot your issue. - The Yonac Team

### 2/5 — Just the wrong label....

*2019-08-23*

Sorry, but this isn’t a synthesizer at all, so anyone expecting something like a guitar synth will be more or less disappointed. I would really wish that a respectable company like YONAC didn’t try to fool their customers like that.
For the record: this is a pitch-shifter with some added bling-bling to make it seem more like a synth. If you need something like that, go ahead and buy this app. But if you have been waiting for that fancy guitar synth from outer space, you probably have to wait some more... Or you just stick with MIDI Guitar 2 or MIDImorphosis ;-)

### 3/5 — Bad

*2024-07-27*

App is not connecting as AUv3 plug-in with Loopy Pro and GarageBand. Wasted money.

**Developer response:** Hello! It does connect with those apps. Please contact us at info@yonac.com and we can help troubleshoot your issue. Thanks!

## Most praised reviews (10 highest-rated)

### 5/5 — Great app!

*2025-12-02*

I love throwing this in my chain as a parallel part of the rig for a nice fusion lead tone.

### 5/5 — Dude!!!!!

*2025-01-11*

It’s so good , I don’t even want others to know about this app. I’m from a small Texas town and I’m not sure people are ready for me to blow their minds. This turned a bad day into a really great life. Genius developer.

### 5/5 — Best damned app for iPad + guitar

*2022-08-03, version 1.0*

Bought this app for 0.99. I can’t stop playing with it on my iPads with the apogee jam interface!!!
So many sounds professional sounding arps & synths with pads and bass synths.
For me a jakoff guitar player, I love it because I don’t have to know music theory or guitar to play it because it does it all rhythm tempo plus you can get lost in designing your own sounds!
Great job Roxsyn keep up the good work!

### 5/5 — 7 stars... I really mean it. 7 stars.

*2022-02-27*

The open ended capacity of this app is mind blowing. Started playing with it a month ago.
It's responsive, brilliant, wild.
The developer is a masterful cocreator for my music. 
It's a pleasure playing with you, brother…

### 5/5 — Amazing

*2021-09-11*

Unique !
The tones are amazing.
One can edit the tones in literally an infinite amount of variation.
I have been messing with this for hours and have been drawn in to the point where I forgot to eat lunch.
I don’t believe there is anything quite like this on the App Store.

### 5/5 — Worth every penny

*2021-07-20*

Great app! Very cool guitar synth at a fraction of the price. I’d be happy to pay for an upgrade for more waveforms/waveshapers too. Really fun product, no midi, no tracking delays!

### 5/5 — Wow....just...wow...

*2021-04-06*

I am a keyboardist first and foremost and I’m okay at playing guitar but I can’t seem to put the guitar down now since I got this app...it’s a game changer!! Just a total different perspective on what you can do with strings. I remember a friend having the Roland GR1 way back in the 90’s and that thing never came close to what you can do with this... it’s simply amazing I have had a constant smile on my face since I plugged into it, so much fun!

### 5/5 — As guitar synths go

*2020-02-23*

This is the 1st guitar synth 
that I've ever found playable.

The latency is negligible if one is used 
to playing through an audio interface.

So far I've tried it on drum loops and guitar.

I think it's brilliant.

Nice one.

### 5/5 — “Rocks in” the effect slot

*2019-12-27*

Even if u don’t play guitar...open it in the effects slot in AUM or AUDIOBUS and run your synths through it for a breath of fresh air...this app is all killer, no filler! Nice work Yo...

### 5/5 — NICE APP

*2019-12-21*

Sounds great and the developer is a generous person. I had one complaint about it and he assured me that the next update will address that issue. In the meantime he offered a free Yonac App to compensate.

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*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 2026-09-08.*