# MIDI Pro — Backings and Composition Ideas > Music composition and practice tool generating customizable MIDI sequences. (iPhone/iPad app by renee zuleta.) - Source: https://appshunter.io/ios/app/midi-pro/id6445922189 (this page in markdown: same URL + `.md`) - Developer: [renee zuleta](https://appshunter.io/developer/1640359705) - Category: Music - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.6 · 165 MB - Languages: English - Released: 2023-03-08 - Data updated: 2026-06-23 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/midi-pro/id6445922189/reviews.md ## What is MIDI Pro? MIDI Pro provides practice opportunities and composition ideas. The app allows you to selectively mix percussion and melody tracks so you can play along with your preferred instrument. The generated MIDI sequences are a starting point for human composers to build upon and add more complex layers of instrumentation. A mixture of determinism and randomness is used to construct MIDI sequences that can be tailored to individual preferences.  The sequences are seeded with the selected rhythm, notes are are added using the selected key, scale and chord progression.   The outcome is a set of tracks that include the percussion plus 4 melody tracks that can be individually adjusted. With the paid version you can save midi files for reuse and or to import them into your favorite DAW. ## Key features - Generate MIDI sequences - Mix percussion and melody tracks - Selectable rhythm, key, scale, and chord progression - Adjustable melody tracks - Save MIDI files - Import to DAW ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Full Access Purchase | $12.99 | one-time | ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/midi-pro/id6445922189/reviews.md ### 2/5 — Can’t load a soundfont *2024-12-22* Every time I load up a soundfont, it keeps on giving me this error: “Player soundbank preload failed”. I’m thinking it’s because the app seems to be dated. EDIT: The error code is 10871. **Developer response:** What is the error code reported next to preload failed? Fixing a similar issue in the upcoming release. ( would need error code to see if it the same) Work around: keep the original default font FluidR3_GM.sf2 font an.d then add the new font. Do not delete the default one if you are up to it resetting to default values will reload it. Otherwise it is available on the web. regards ### 2/5 — Can’t load a soundfont *2024-11-27* Every time I load up a soundfont, it keeps on giving me this error: “Player soundbank preload failed”. I’m thinking it’s because the app seems to be dated. **Developer response:** What is the error code reported next to preload failed? Fixing a similar issue in the upcoming release. ( would need error code to see if it the same) Work around: keep the original default font FluidR3_GM.sf2 font an.d then add the new font. Do not delete the default one if you are up to it resetting to default values will reload it. Otherwise it is available on the web. regards ### 2/5 — Good start to great idea for practice app *2023-09-04* I paid for the full version of this app because I want to support this developer. I tried using this app primary to help generate backing parts to practice soloing and accompanying with my primary instruments. The user interface is very simplistic but that doesn’t bother me as much as there’s little guidance to figure out how to use the thing. Pros: - lots of flexibility - many built in progressions - sound fonts library can be exchanged Cons: - synthesized melody and parts are way too busy to be used as backing and often interfere with each other harmonically; I end up muting half of the tracks - acoustic guitar backing parts could strum rhythms - track levels cannot be muted or level adjusted during playback - the animated character is cute but wasted ui space. Update: Ended up not using this app, deleting it; Chordbot ends being more practical for my needs and at a much lower price tag. Hope you put my $15 to good use! **Developer response:** We appreciate the feedback. Working on new release and better guidance on the product page. The product support page into were you can ask questions is on the App Store. In the future we will provide that contact information inside the app so that a contact method is easier to find. Regards ### 3/5 — Good start to great idea for practice app *2023-09-01* I paid for the full version of this app because I want to support this developer. I am using this app primary to help generate backing parts to practice soloing and accompanying with my primary instruments. The user interface is very simplistic but that doesn’t bother me as much as there’s little guidance to figure out how to use the thing. Pros: - lots of flexibility - many built in progressions - sound fonts library can be exchanged Cons: - synthesized melody and parts are way too busy to be used as backing and often interfere with each other harmonically; I end up muting half of the tracks - acoustic guitar backing parts could strum rhythms - track levels cannot be muted or level adjusted during playback - the animated character is cute but wasted ui space ### 3/5 — Good start to great idea for practice app *2023-08-30* I paid for the full version of this app because I want to support this developer. I am using this app primary to help generate backing parts to practice soloing and accompanying with my primary instruments. The user interface is very simplistic but that doesn’t bother me as much as there’s little guidance to figure out how to use the thing. I would have reached out to the developer directly but it looks like a review is the only way to provide feedback at the moment. Pros: - lots of flexibility - many built in progressions - sound fonts library can be exchanged Cons: - synthesized melody and parts are way too busy to be used as backing and often interfere with each other harmonically; I end up muting half of the tracks - acoustic guitar backing parts could strum rhythms - the developer cannot be contacted and has no website or forum to ask questions - track levels cannot be muted or level adjusted during playback - the animated character is wasted ui space, sorry ## Frequently asked questions about MIDI Pro ### What is MIDI Pro used for? MIDI Pro is used to generate practice tracks and composition ideas. It allows users to create customizable MIDI sequences by selecting rhythms, keys, scales, and chord progressions. ### Can I save my creations with MIDI Pro? Yes, the paid version of MIDI Pro allows you to save MIDI files. These files can be reused or imported into your favorite Digital Audio Workstation (DAW). ### What devices does MIDI Pro support? MIDI Pro is supported on iPhone, iPad, and iPod devices. ### What is the age rating for MIDI Pro? MIDI Pro has an age rating of 4+, making it suitable for a wide range of users. ### How often is MIDI Pro updated? The latest version of MIDI Pro is 4.1, and it was last updated on February 4, 2026. This indicates a recent update, suggesting ongoing development. ### Does MIDI Pro have ads? No, MIDI Pro does not contain advertisements. ### What makes the generated MIDI sequences unique? The app uses a mixture of determinism and randomness to construct MIDI sequences. This allows for sequences that can be tailored to individual preferences while still offering creative variation. ### Can I adjust the melody tracks in MIDI Pro? Yes, MIDI Pro generates percussion plus four melody tracks, and each of these melody tracks can be individually adjusted to suit your needs. ## Version history (last 5 releases) ### 4.2 — 2026-06-17 Tuner enhanced with microphone usage. Detect notes in octaves 2 through 6 Bug fixes ### 4.1 — 2026-02-04 Added more chord possibilities Added ability to specify the rate at which to move to the next progression note Bug fixes and UI improvements ### 4.0 — 2025-12-16 Enhanced track 4 patterns Updates to toolbar buttons to fit in iPhones with new IOS 26 Bug fixes ### 3.5 — 2025-11-29 Sound font correctly included plus some UI improvements ### 3.4 — 2025-07-23 1. Groove editor new features: a. Option to generate a new beat sequence b. Option to change just one instrument beat sequence 2. Bug fixes ## Apps similar to MIDI Pro | App | Rating | Price | Category | | --- | --- | --- | --- | | [Chord Memo](https://appshunter.io/ios/app/chord-memo/id6446309728) | 5.0 (3) | Free | Music | | [Chordio+: create & learn music](https://appshunter.io/ios/app/chordio-plus-create-and-learn-music/id1662210145) | 2.3 (6) | Free | Music | | [MIDI Drum](https://appshunter.io/ios/app/midi-drum/id6475945376) | 5.0 (2) | Free | Music | | [MIDI FX](https://appshunter.io/ios/app/midi-fx/id1641511918) | 5.0 (4) | Free | Music | --- *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 2026-06-23.*