# OIIIO – Lab Arpeggiator — Sound pattern machine > Experimental sound pattern generator with particle behavior and groove customization. (iPhone/iPad app by Stanislav Duplinskiy.) - Source: https://appshunter.io/ios/app/oiiio-lab-arpeggiator/id1569332170 (this page in markdown: same URL + `.md`) - Developer: [Stanislav Duplinskiy](https://appshunter.io/developer/1529735040) - Category: Music, Music, Entertainment - Price: Free with in-app purchases - Rating: 2.00/5 from 4 App Store ratings · 15 written reviews indexed - Age rating: 4+ - Requires: iOS 11.0 · 71 MB - Languages: English - Released: 2021-05-28 - Data updated: 2026-06-01 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/oiiio-lab-arpeggiator/id1569332170/reviews.md ## What is OIIIO? Try a brand-new sound with sound collision generator! Fine-tuning of particle behavior for all parameters Find the right groove and BPM for you Become the best in your experimental lab The app invites you to immerse yourself in a world of experiments with particles and synthesize sound using contact and impact. There are also many settings for particle behavior, groove, BPM and more. Plus, we’ve selected the best presets that can be edited. It's also worth reading the privacy policy: https://sites.google.com/view/castles-trip-privacy-policy and terms of use: https://sites.google.com/view/oiiio-tac/ ## Key features - Sound collision generator - Particle behavior fine-tuning - Groove and BPM settings - Experimental sound synthesis - Editable presets ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Full access to app functions | $5.99 | per month | | Full access to app functions | $9.99 | per month | ## Recent user reviews (10 of 15) All indexed reviews: https://appshunter.io/ios/app/oiiio-lab-arpeggiator/id1569332170/reviews.md ### 1/5 — ugh, yet another terrible subscription application *2025-09-28* Unless you want to subscribe, the in-app purchase is for subscription only. This IAP listed is not a flat rate to unlock forever, but a ransom for an app that doesn’t really look like the monthly updates it promises aren’t adding actual useful content. An idea for Stanislav is to just charge for actual content delivery of sound packs. There are other options available that offer a lot more creative control and it is up to the user to purchase the additional packs and styles beyond the basic pre-installed packs. It allows the user to pay as they go when they can to use the product and get the value they want. . You can continue with the limited function, which is an unplayable demo. It is like downloading an advert that wants you to subscribe if you want to actually use the thing, monthly. A 3 day trial seems useless. There are way too many subscriptions around in apps, and even retail now, when money is tight. The last update is listed at the time I write this as over a year ago, meaning the monthly updates promised on the subscription page is false, or so minor that it adds no value to the user. I buy quality content, not basic access. ### 3/5 — Well... *2024-07-20* ...an arpeggiator - that's what I was looking for! This app, however, feels more like a toy: a little Square is moving in a circular manner over a "checkerboard": You can "darken" the tiles, but that does not have any effect. You can tell the little square to do make little turns (so that it moves in a star-like manner/pattern, instead of circular. That creates different sounds. My biggest problem is, that I am not able to produce a loop with the length I need (e.g. 4/4), because the movements are way too unpredictable. Additionally, on the display of my laptop, the app opens in a window only, and that approximately is the size of the screen of my iPhone (way too small). Last, since there is no manual or documentation, I couldn't manage to find out how to use the app productively... That is a pity; and of course I am not in a position to buy an app the functions of which I do not understand. Maybe the dev(s?) Could include a little manual with their product. Something like a "Quick Start" guide should not be too much work, and would help people like me in evaluating the app's functions! I cannot give 5 stars, with the experience, I described here. Still, I have a hunch did this little app MIGHT provide wonderful possibilities to form sound in a manner of "happy accidents"; if I could only get the length right... I'll be watching what happens, and as soon as I can make it work, I shall gladly buy it and update this review! **Developer response:** Hello, FlukeGrin! Thank you for the detailed feedback and for giving our app a try. Indeed, it operates on physical principles, where particle movement is chaotic and doesn’t follow conventional musical beats. We designed this system specifically for sound experimentation and unique effect creation. We understand that the lack of instructions can be challenging, and we’ll be adding a ‘Quick Start’ guide to help users explore the app’s settings and features more easily. Thank you for the suggestion! We’re glad you see the app’s potential, and we’re working to improve your experience. Stay tuned for updates! ### 1/5 — Useless w/o subscription. Awful business model *2024-04-06* This is a unity app, the app is heavily locked down including an obligatory 40% off subscription screen that panics you into believing the app won’t work. The small gray text saying continue is so small. I’m just shocked that anyone would pay 5.99 a month to use this app, but maybe I’m just an overly emotional reviewer looking for free apps. Either way, this app is big time poopoo. Sorry to all the nice fellas who made it- maybe I should delete this review. **Developer response:** Hi, egoki11a! Thank you for your feedback, we appreciate any constructive feedback or suggestions you have about the update and how it works. It's really important to us. The app does include a subscription with a 3-day free trial to fully experience the content. Also in the free mode there is some content for interaction and understanding whether you need to switch to the extended version. Regarding your assessment of our application, I can assure you that the application is in demand. It is used both as entertainment and to use his developments as a further change - searching for a groove and interesting rhythmic patterns. Thank you very much, we will try to improve. Best regards, Castles Trip. ### 2/5 — Exploitation *2023-11-11, version 1.3.0* Can’t stand these apps that say they’re free then hit you with a subscription demand right away ### 5/5 — Cool app *2023-10-23* I’m really enjoying this app **Developer response:** Hello! Thank you for your feedback, it is very important and pleasant for us :) Best regards, Castles Trip ### 1/5 — Looked interesting…. *2023-10-06, version 1.3.0* But you cannot try it without subscribing and then unsubscribing if you do not want it. If you have faith in your product and are asking me to pay £60 a year for it you really need to rethink that. If I am paying £60 a year for something I expect more than an Instagram account for support. It is only a Unity app with all the shortcomings that brings (like the no sound problem in the other review). Deleted. ### 1/5 — Not working *2023-10-06, version 1.1.0* As previous review states it is impossible to get past a "Check your Internet connection". Thus making it impossible to use. I would have reported this to App Support but that links to an Instagram account 🤷‍♂️ ### 1/5 — Doesn't Seem to Work *2022-12-05, version 1.1.0* The app is stuck on the splash page & telling me I have no internet connection (which is fine) so can't even try it ### 1/5 — Doesn’t work *2022-08-10, version 1.3.0* No sound but keeps bugging me to buy the premium app 😂 ### 4/5 — Intéressant *2022-07-01* Petit module bien sympa, interface intéressante, des rendus qui génèrent des ambiances sonores inspirantes. Par contre prise en main des contrôleur s pas trés pratique. **Developer response:** Salut Npispace! Merci pour votre avis! Si je vous comprends bien, cette application ne fonctionne malheureusement pas en tant que contrôleur. Dans les prochaines mises à jour, nous prévoyons d'implémenter l'export des données midi créées dans l'application. Peut-être que dans le futur, l'application deviendra disponible en tant que contrôleur midi pour se connecter à votre DAW =) ## Frequently asked questions about OIIIO ### What is OIIIO – Lab Arpeggiator? OIIIO – Lab Arpeggiator is a music application that allows users to create unique sounds through particle collision and manipulation. It offers fine-tuning of particle behavior, groove, and BPM settings for experimental sound synthesis. ### What devices does OIIIO – Lab Arpeggiator support? OIIIO – Lab Arpeggiator is available on Mac, iPhone, iPad, and iPod. It is designed for a wide range of Apple devices. ### What is the age rating for OIIIO – Lab Arpeggiator? OIIIO – Lab Arpeggiator has an age rating of 4+. This indicates it is suitable for young children and general audiences. ### How often is OIIIO – Lab Arpeggiator updated? The latest version of OIIIO – Lab Arpeggiator is 1.3.0, which was last updated on January 23, 2022. This suggests updates may not be very frequent. ### What are the subscription options for OIIIO – Lab Arpeggiator? OIIIO – Lab Arpeggiator offers subscription plans for full access to app functions. These include options for $5.99/month and $9.99/month, both with a 3-day free trial. ### Does OIIIO – Lab Arpeggiator have ads? No, OIIIO – Lab Arpeggiator does not contain advertisements. The app is free to download and use without ad interruptions. ### What is the user sentiment for OIIIO – Lab Arpeggiator? Based on the available data, OIIIO – Lab Arpeggiator has a rating of 2.0 stars from 4 ratings. This indicates a generally negative user sentiment. ### Can I try OIIIO – Lab Arpeggiator before subscribing? Yes, OIIIO – Lab Arpeggiator offers a 3-day free trial for its subscription plans. This allows users to explore the full app functions before committing to a paid subscription. ## Version history (last 5 releases) ### 1.3.0 — 2022-01-23 We've added tons of new presets for you! New gamma settings appeared! ### 1.2.0 — 2021-12-01 We've added tons of new presets for you! New gamma settings appeared! ### 1.1.0 — 2021-08-08 - More new presets! - Added a tonality change for a lot of variety. - Fixed bugs. ### 1.0.1 — 2021-06-03 Minor bugs fixed. Presets update. ### 1.0 — 2021-05-28 No release notes. ## Apps similar to OIIIO | App | Rating | Price | Category | | --- | --- | --- | --- | | [Looperator](https://appshunter.io/ios/app/looperator/id1506569603) | 4.7 (77) | Free | Music | ## More apps by Stanislav Duplinskiy - [My Kalimba - Relax Meditation](https://appshunter.io/ios/app/my-kalimba-relax-meditation/id1529735038) - [Granular Synthesizer](https://appshunter.io/ios/app/granular-synthesizer/id1537443140) - [Night Light - Calm Sleep](https://appshunter.io/ios/app/night-light-calm-sleep/id1546253241) - [Light Vibes](https://appshunter.io/ios/app/light-vibes/id1549938712) - [FM Synthesizer – Piano Keys](https://appshunter.io/ios/app/fm-synthesizer-piano-keys/id1563962952) All apps by Stanislav Duplinskiy: https://appshunter.io/developer/1529735040 --- *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 2026-06-01.*