# Dexed Synth > Mobile FM synthesizer with extensive sound library and DAW integration. (iPhone/iPad app by George Rosar.) - Source: https://appshunter.io/ios/app/dexed-synth/id1462551596 (this page in markdown: same URL + `.md`) - Developer: [George Rosar](https://appshunter.io/developer/1462550889) - Category: Music, Entertainment - Price: $3.99 - Rating: 3.30/5 from 40 App Store ratings · 57 written reviews indexed - Age rating: 12+ - Requires: iOS 12.0 · 103 MB - Released: 2019-05-07 - Data updated: 2026-09-05 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/dexed-synth/id1462551596/reviews.md ## What is Dexed Synth? A port of Dexed, a FM Synthesizer. Features over 20,000 Cartridges with 32 patches each. Comes with AudioUnit AUv3 plugin for use inside AUM and other DAW apps like GarageBand. Get a camera kit and plug in a midi controller through USB, or get a 5-PIN DIN 1/in 1/out, to: USB and use the camera kit through USB MIDI Spec, NOTE: some devices handle SysEx differently and therefore we cannot promise support for SysEx, so invest in connectors and cables wisely. If you have questions involving making MIDI-USB work the best for your situation, email support. This iOS app was designed especially with small interfaces in mind. Example: an iPhone 5S or a resizable window inside AUM. If one clicks the menu eye, a feature LOCK SCROLL can be –very– important to set knobs, sliders, et cetera: if screen size is limited. LOCK PARAMs in the eye menu locks the parameters for scrolling without knocking loose the preset. In the CARTs menu double tap a cartridge to load a series of patches, the files will have a .syx extension. To use MIDI CC, in the menu eye you must first turn on MIDI CC. When MIDI CC is on it makes the tap events react like a right mouse button click. NOTE: MIDI CC, in eye menu, doesn't have to be on after CC controls are mapped. MIDI CC touch modifier will also turn off after you have successfully mapped a CC control, or when you delete the current mappings. You can turn it on again later to turn off mappings or create new CC mappings. I would suggest setting CC knobs in the bottom section of the screen – above keyboard (if visible). Currently you must save patch in DAW – for instance: GarageBand or AUM. Once we can determine unity and saving/loading between the AUv3 plugin and the StandAlone app, external save will be eventually developed. There is a pathway set to transfer .syx files through iTunes to the StandAlone app, only. Other plans include fixing pixelated images, a quick zoom to set CC mode and updating GUI to a higher degree, make sure midi CC knobs update. ## Key features - FM Synthesizer port - Over 20,000 cartridges with 32 patches each - AudioUnit AUv3 plugin support - MIDI controller input via USB - Lock scroll and parameter locking - MIDI CC mapping ## Chart rankings - #191 in Top Paid · Music (US App Store) ## Recent user reviews (10 of 57) All indexed reviews: https://appshunter.io/ios/app/dexed-synth/id1462551596/reviews.md ### 1/5 — No funciona *2026-07-20, version 1.2.3* Se abre la aplicación pero sólo funcionan tres de los sonidos, en el tercero se queda colgada una de las teclas sin poder desactivarla. No se activan los sonidos más allá del tercero, se queda parpadeando la opción sin lograr cambiarse el sonido. iPad Pro M4 iPadOS 26.5.2. Solicitado reembolso. ### 3/5 — Sysex manager *2026-06-02, version 1.2.3* Wait a minute! could be 5 stars if…. Any way possible to make this to be able to perform similar to the desktop version with Sysex files as a editor and librarian. I though I would be able to send presets to my Yamaha TX7 with this app alone. You can on the desktop version and its free. I paid for the iPad version and I’m shocked that feature was left out, I may need to purchase something else that will due both what I thought this would due since it costed me a fee, PLEASE UPDATE 2026?????? ### 5/5 — Logic Pro presets deletion impossible *2026-05-02, version 1.2.3* OK, so I’ve been using this app for many many months now. I use Logic Pro for iPad, and recently I’ve been trying to reset my preset list. Though I can’t delete any of my presets that have already been saved so I am not very sure what to do. though I am a vision impaired user, and I was thinking about writing this review upon implementing voiceover accessibility, but I figured it would be much easier to deal with the Logic Pro problem. Other than that, this app is great, and I could definitely use it for my biggest hopes and dreams when it comes to music creation. I plan on making video game music with it kinda like a Sega Genesis, but bigger and better. but, my presets list is too large for me to save anything and know where it is anymore, so if there is a way that the deletion problem can be solved, I would greatly appreciate it if this comes as soon as possible. also the reason I gave this app 5 stars is because it is literally what I’m looking for lol. It’s a great DX seven imitation, and I think it deserves less trash talk then it’s getting at this very moment. I understand there are some problems and yes, I do agree. People should be a bit more lenient to when typing out the reviews that they are writing out, because this app is literally basically the perfect FM synthesizer out there. ### 2/5 — 残念… *2026-04-08* レイアウトをPC版そのままにしているのでスクロールしないといけなくて非常に音が作りにくい。仕方ないので音色をあらかじめPC版で作ったデータをiPadにコピーしたらスタンドアロンでは読めるのに、何故かcubasis3を介すると読めない。何とかしてほしいです。 ### 3/5 — It’s really hard to work with this app *2025-07-30, version 1.2.3* Can’t load cartridges from online banks, trying to press load button blocks the app… very hard to create personal cartridges… any chance to solve this? ### 4/5 — A Beautiful Mess *2025-03-24, version 1.2.3* For all the jank, this thing is pretty incredible. Hard pressed to think of a better $4 spend for anyone who wants to jam with AUM on an iPhone. ### 3/5 — It’s need better graphics and stability *2025-02-19, version 1.2.3* I’m using an iPad Pro with the latest chip I love the idea of the app but it need more attention it need stability better graphics and user interface options to use favorites and save tones ### 1/5 — Very Disappointing *2024-10-05, version 1.2.2* M1 iMac Pro. Haven’t been able to use this app at all. The interface is poorly designed. Bugs are numerous. To use this App I have to delete the app everytime and reload. There little icon that does something with focus. Little X on bottom removes keyboard with no clear way to get keyb back. Load one or two Syx files from the Cart and buttons stop responding. Back to removing and reloading. This is a mess. ### 1/5 — Waste of money *2024-09-18, version 1.2.2* App is simply unusable. Don’t waste your time or money. ### 4/5 — So close to being perfect *2024-06-12* Forget not being able to save patches locally, not being able to load custom patches in auv3 is a way bigger deal. Most of us aren’t programming this, just loading some of the countless presets. And if we can’t load them, well, we can’t play them. I get that it’s basically the same problem, but, priorities. Also, it’s easy enough in the standalone app to load patches over Dropbox or whatever, no pressing need for a more robust transfer. Did I mention that we need to be able to load custom patches in auv3? Thx for this excellent port otherwise. I get how much work it is. Hope you stick with it. ## Frequently asked questions about Dexed Synth ### What is Dexed Synth? Dexed Synth is a mobile application that ports a popular FM synthesizer to your device. It provides access to a massive library of sounds and can be used as an AUv3 plugin within Digital Audio Workstations (DAWs) like GarageBand and AUM. ### How can I control Dexed Synth with external hardware? You can connect external MIDI controllers via USB using a camera kit or a 5-PIN DIN to USB adapter. The app supports MIDI-USB specifications, allowing for hands-on control of synthesizer parameters. ### Is Dexed Synth free to use? Yes, the application is offered for free. There are no in-app purchases or advertisements mentioned in the provided description. ### What are the compatibility requirements for Dexed Synth? This iOS app is designed with small interfaces in mind, making it suitable for devices like the iPhone 5S or for use within resizable windows in DAWs. It also supports AUv3 plugin functionality for integration with other music production apps. ### How do I manage patches and settings in Dexed Synth? Patches are organized into cartridges, and you can load series of patches by double-tapping a cartridge in the CARTs menu. Features like 'LOCK SCROLL' and 'LOCK PARAMs' in the eye menu help manage parameters on smaller screens. MIDI CC mapping can be enabled and configured in the eye menu for tap events. ## Version history (last 5 releases) ### 1.2.3 — 2024-12-13 this is just a new build ### 1.2.2 — 2024-06-25 updated to use multi platform build ### 1.2.1 — 2023-10-04 1.2.1, a new installation. Multiple instances working in AUM, DX-7 Midi Out working in AUM, added quick close buttons. Future plans are to get the SAVE .syx working again, currently you must use your DAW to save presets. ### 1.1.4 — 2023-10-02 Works on Garage Band again, should allow multiple instances. ### 1.1.3 — 2023-04-14 New Xcode new build ## Apps similar to Dexed Synth | App | Rating | Price | Category | | --- | --- | --- | --- | | [Mersenne - AUv3 Plug-in Synth](https://appshunter.io/ios/app/mersenne-auv3-plug-in-synth/id1084197093) | 4.7 (28) | $8.00 | Music | | [NERD Synth A2x + AUv3](https://appshunter.io/ios/app/nerd-synth-a2x-plus-auv3/id6478898564) | 4.9 (1,342) | $5.99 | Music | | [Lagrange - AUv3 Plug-in Synth](https://appshunter.io/ios/app/lagrange-auv3-plug-in-synth/id1479000758) | 4.8 (57) | $8.00 | Music | | [AudioKit Synth One Synthesizer](https://appshunter.io/ios/app/audiokit-synth-one-synthesizer/id1371050497) | 4.9 (26,818) | Free | Music | | [Sunrizer synth](https://appshunter.io/ios/app/sunrizer-synth/id443663267) | 4.7 (183) | $4.99 | Music | | [Nambu - AUv3 Plug-in Synth](https://appshunter.io/ios/app/nambu-auv3-plug-in-synth/id1624422460) | 4.8 (48) | $16.00 | Music | ## More apps by George Rosar - [iridescent Fraction](https://appshunter.io/ios/app/iridescent-fraction/id1543994532) All apps by George Rosar: https://appshunter.io/developer/1462550889 --- *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 2026-09-05.*