# KASPAR — user reviews > 56 indexed App Store user reviews of KASPAR by Yonac Inc., rated 4.60/5 from 91 ratings. - Source: https://appshunter.io/ios/app/kaspar/id1245045964/reviews - App overview in markdown: https://appshunter.io/ios/app/kaspar/id1245045964.md - Rating breakdown: 5★ 72 · 4★ 8 · 3★ 4 · 2★ 5 · 1★ 2 ## Newest reviews (11 of 56) ### 4/5 — Loaded with features *2024-07-02* I love what this synth can do. I appreciate the not too difficult UI, because I’m a novice at sound design and I’ve been trying my hand at creating my own patches in Kaspar. I took one star off, however, because there seems to be a bug, which, if you’re doing sound design, is fairly significant. The sound is muted for some of the synths when they are put in solo mode. Pretty frustrating. I hope the developer sees this review. I’m using an iPad Pro 6th generation. ### 4/5 — Super sounds *2023-10-22, version 1.1* Sehr guter Ansatz, aber auch eine große Herausforderung für die CPU. Schade, dass der Synth nicht weiterentwickelt wird. Macht wirklich Spaß, das Ding zu spielen. ### 4/5 — Programs change is. Not working as Auv3 in cubasis internal track *2023-09-12* Hello where are you I have to inform that Kauldron and KASPAR both app does not follow program change msg as Auv3 in cubasis in internal track From external is working but when I draw a program change msg on track both apps do not follow Please fix it ### 4/5 — Can’t go full screen in Cubasis 3 *2022-03-25* I bought this to use within Cubasis 3 but the UI doesn’t scale up to full screen, making editing difficult. I’m mostly going to use it for the presets because of this. ### 4/5 — Bien mais où l’auv3 ? *2020-05-05, version 1.1* Lapp est très bien mais pour quoi pas faire comme magellan faire une app app auv3 ? C quand même la base et j’ai un big sur GarageBand ### 3/5 — Pretty good but cuts out *2019-08-24* Love this app, but it crashes. Sometimes when recording in GarageBand and sometimes when sharing songs from GarageBand. Tried a brand new IPad mini 5 with iOS 12.4 and it happened again when sharing a song. ### 5/5 — Incredible Power *2018-11-06* I’ve been using this synth since it launched last year. I finally decided to leave a review after superb support from the developer in squashing a bug (They fixed it in a day!) This synth is so powerful, I love it! Just read the list of all the features. This is the only synth app I’ve found that allows me to quickly create the sounds I want. I think the UI is well designed and extremely easy to use. Trust me, if I can program this thing, anyone can. Combine an easy to use synth with incredible power, as well as top notch support, and you have a winning five star app! ### 5/5 — Powerhouse *2018-11-04* I keep finding further depth in Kaspar. It goes way beyond the vector synths I’ve used before in terms of flexibility and mod options, and of course it sounds NICE! ### 5/5 — Very sophisticated, with excellent sound *2018-11-04, version 1.1* I continue to be blown away by the sound quality I’ve managed to generate with this app. Not only is it well thought-out and highly functional, but it sounds phenomenal! I will echo another reviewer who indicated that he would have gladly paid full price for it! Well worth the full price; jump on it when it’s discounted and you’ll not regret it in the least. Excellent work by the developers. ### 3/5 — Vraiment super synth *2018-04-27, version 1.0* Il y a un bug à corriger d'urgence: si on va dans les réglages et qu'on clique sur help l'application plante si on est offline et en plus tous les réglages disparaissent. Donc, faut intégrer l'aide dans l'appli. Testé sur ipad pro IOS 9.3. Edit du 27-04-18: it seems that nobody cares.. I cannot upgrade above IOS 9.3 because I don't want to loose a bunch of apps paid with real money. I give up the IOS music creation. Thank you Apple! ### 5/5 — What a workhorse! *2018-03-18, version 1.0* I use this to practice with my band all the time ## Most critical reviews (10 lowest-rated) ### 1/5 — Fed back that the FX chain is not working - no response. *2022-11-25, version 1.1* A lot of the functionality of this synth simply is not working. I also had issues where ‘Roxsyn’ another app of Yonac’s did not work properly, and that was a week or more ago. No response to that either. No acknowledgement of receipt even of the support request, nothing. In short: iPAd M1 12.9” and using GarageBand mostly, but also standalone, NONE of the FX chain can be made to work. Other functions too are apparently inoperable. Nothing in the user guides to suggest there’s some secret special way of making things operate, so here we are. I hope they can sort it, then this review can be amended. Take care all. ### 1/5 — Please fix this *2020-03-11, version 1.1* Although everything seems to work alright as soon as you put it into cubasis as a auv3 and try to open it up full screen all it does is stay the same size can you please fix this as I cannot hardly see it ### 1/5 — Glitchy. *2017-07-22, version 1.0* Need a refund too. I love your apps but this one will not work on my IPad 4 either. ### 2/5 — Audio unit crash *2018-12-01* Buon synth con preset originali ma instabile fino a risultare inutilizzabile come Audio Unit con Garageband. Un vero peccato. ### 2/5 — Not up to the hype *2018-11-03, version 1.0* Not impressed by this untidy and badly laid out synth. I was also not impressed by the sound ### 2/5 — AUv3 Dreadful *2018-10-31, version 1.0* I really wanted to love this synth and as a standalone it sounds pretty good however, I only bought it to use in Cubasis/GarageBand as an Audio Unit Plug-in and although the description says it is an AUv3 it’s flaky at best. First up it just randomly crashes inside the host (both GarageBand and Cubasis) and also when you have multiple instances (in fact any other software synth loaded) when you play the midi controller keyboard it plays every single instance of it at the same time even when the track is not armed - none of my other AUv3 plugins behave this way at all. The same happens with your Kauldron synth too so there is something inherently wrong somewhere. ### 2/5 — Keeps crashing in BeatMaker 3 as Auv3 *2018-03-11* I love the sound in the KASPAR and Kauldron apps but they keep crashing ever time I load them as AUv3 and that’s where they are meant to work best? And KASPAR doesn’t even fit the screen correctly. What’s up with that? My iPad Pro 12.9 is up to date. And so are all of my apps. I think tonal need to give these apps some attention. **Developer response:** Hello! We can't always control behavior in apps not made by us. If you'd like to fill out our support form on our website, we can help you troubleshoot: http://www.yonac.com/support Cheers! - The Yonac Team ### 2/5 — No MIDI out. Modulation matrix problems *2018-03-06* There is no MIDI out so if you open KASPAR In AUM and you are using the chord function in KASPAR, you can not send MIDI chords to another synth app. The modulation matrix has a problem with aftertouch modulating the cutoff frequency. One slot of after touch to cutoff freq at 100 does not open the filter fully. You have to use 3 slots to get from totally closed to fully open. Copying presets between layers gets messed up if you presets has the after touch to filter freq modulation. The filter sounds very good and MIDI learn works correctly. I have contacted the developer 3 times about this problem using the contact page on his webpage but I have not heard back from him. This could be a really great synth with some minor fixes. **Developer response:** Hello! To report any bugs or feature requests, please contact us via our website: http://www.yonac.com/support - Thanks, The Yonac Team ### 3/5 — Presets seem limited in sound variety *2021-09-24* It’s great for oran-like sounds. But I couldn’t produce vastly different tones. Maybe it’s just me. Kauldron and Magellan are my fav synths from this dev. Highly recommend both. ### 3/5 — Problemas AUV3 *2020-10-12* En Roland Zenbeats hace que se apague la aplicación al cargarlo como AUV3 ## Most praised reviews (10 highest-rated) ### 5/5 — Mega powerful. Insane waveforms. Yonac quality *2025-11-27, version 1.1* Easy 5 ### 5/5 — PERFEKT *2024-12-13, version 1.1* Mein erstes Rating überhaupt; da passt alles, Klang, Bedienung, Komplexität - sogar das Speichern von Eigengenerationen (Presets) läuft unkomplizierter als bei anderen. Und hier macht das Morphin so richtig Spaß; alles mehr oder weniger selbsterklärend wenn man Grunderfahrungen mit Synthesizern hat! LG EarDropSnob ### 5/5 — Needs a little love *2023-10-18, version 1.1* Great synth has it’s own unique sound and vibe but needs a little love. ### 5/5 — Sounds inspirational *2022-08-13, version 1.1* Great. ### 5/5 — Very (very) Deep *2022-03-21* It’s hard to say enough about this synth. I’m not going to repeat all that’s in the description but I believe it’s all accurate. In a way, it’s a testimony to how powerful a platform iOS has become because this Synth is immensely capable. Three true independent oscillations per layer (and they’re really synths of their own, not layers) with Omni stackable effects gives you extraordinary sound shaping possibilities. Ok, I said I wasn’t going to repeat the description and I just did. But I can’t imagine a hardware synth being able to do this so simply (I have a Moog One and this can produce sounds that easily rival it - and that synth cost me $8,000). I’m sure I just said something heretical but it, true. Buy this synth and save yourself a ton of money! ### 5/5 — Presets goldmine *2021-11-29* My lasting impressions of this app are that of simplicity and ease of use combined with the ability to dig deep and form your own pleasantries or insanities, whichever you desire or something in between. If you are looking for something that requires only the touch of a few buttons for a quick sound that requires little or no parameter cracking, like a Yamaha or Casio off the shelf gadget + extras, then your only time consuming part of using the app is making a decision on which of the multitude of presets you are going to use. Otherwise you can shape and form parameters with all of the familiar names in a different looking interface to your heart’s content until you get it where you want it. That being said, the interface makes more sense on some levels than others, but it is nice to see a developer go beyond fake knobs and buttons in and toward something that leaves the old ways behind while maintaining the same sense of analog fatness (that could honestly be a litter fatter). ### 5/5 — Yonac quality ! *2020-12-05, version 1.1* You get 8 complete synths, each with full controls (Filter, env, amp, mod, LFOs + FXs) all stackable with a Morphpad a la Animoog. Top-notch UI, a bunch of cool presets, AUv3. What else ? ### 5/5 — Just plain great! *2019-07-13, version 1.1* This synth is really amazing. I should say « these » because you have 8 synth! This is my favorite multi-layered. Beats the overrated Layr for sure (this is my opinion, you don’t have to agree with it). ### 5/5 — Now I’m fan of this developer *2019-07-01, version 1.1* This thing sounds mind blowing, They can match with the moog model D app or even a real Analog Synth. Amazing! ### 5/5 — Nach den ersten Tönen *2019-05-18, version 1.1* ...Daumen hoch! Bin doch positiv überrascht! 8 Synths kombinierbar layerbar. Geil --- *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 2026-07-09.*