Simple MIDI

Simple MIDI

By Evan Murray

Simple MIDI is an open-source MIDI playback utility for iOS and iPadOS, built using the AudioKit framework for educational and developer use.

The App DNA

What makes this app unique?

The app removes the barrier for developers to study audio-processing code within the Swift Playgrounds environment, serving as a technical portfolio piece.

For Music technology students and developers interested in Swift and AudioKit.

What does it look like?

Key features

MIDI File Playbackstandard

Plays standard MIDI files directly on iOS devices.

Open Source Codebaseedge

Source code available on GitHub for educational review and modification, establishing developer authority for B2B or freelance acquisition.

Swift Playgrounds Compatibilityedge

Built to run within the Swift Playgrounds environment on iPad.

How much does it cost?

freeFree

Simple MIDI is distributed as a free, open-source tool with no visible monetization or IAP gates.

Velocity

Dormant developmentnew contentShow more...

Simple MIDI has been inactive for 1,721 days, indicating a complete cessation of development. The app has not received any updates, bug fixes, or feature additions in over four years. Given the lack of recent activity, the project appears to be abandoned by its developer.

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Who built it?

Evan Murray

2 apps tracked · Music

Intensifier AUv3Intensifier AUv3
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User Sentiment

What do users think recently?

Recent user voice shows a mixed sentiment. Users appreciate realistic piano instrument emulation provides high quality audio output for non-musicians using midi files.

How are ratings & reviews evolving?

App Store
3.75 · 8

What users say, by theme

What Users Love
  • Realistic piano instrument emulation provides high quality audio output for non-musicians using midi files
What Frustrates Users
  • Application crashes immediately upon attempting to open specific midi files for playback during sessions
+ 1 more theme

4 of 4 recent reviews analyzed · limited sample

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Competition

Competitive landscape for Simple MIDI

How's the Music market?

Simple MIDI occupies a niche educational space within the Music category, maintaining a 3.75-star rating across 8 total platform ratings. The lack of updates since early 2022 signals a maintenance-mode posture that limits its competitive relevance against actively supported audio utilities.

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The rivals identified

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The Analyst's Read

Key takeaways for Simple MIDI

Where is it heading?

The music technology education market is shifting toward integrated, cloud-based coding environments, leaving static MIDI players like Simple MIDI in a legacy position. Without a renewed update cadence, the app will likely lose its relevance as a learning tool for the current Swift Playgrounds ecosystem.

  • The 4-year update gap indicates the project is in maintenance mode, which increases the risk of future iOS compatibility failures.

The SWOT

Core Strengths
  • Open-source codebase facilitates educational community visibility
Critical Frictions 2 weaknesses inside
Growth Levers
  • Expanding AudioKit-based features for Swift developers
Market Threats 1 threat identified

Next best moves

1 Maintain

Audit file-loading logic because crashes are the top-reported complaint → reduce churn

The counter-intuitive read

The app's lack of updates is a feature, not a bug…

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Bottom line

Simple MIDI serves as a technical portfolio piece rather than a consumer product, and addressing file-loading crashes would improve its utility as an educational tool. The current maintenance-mode status suggests the developer should prioritize stability over feature expansion to preserve the codebase's value.

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FAQ

Is Simple MIDI suitable for professional music production?
No, Simple MIDI is designed as an educational tool for students and developers to learn Swift and AudioKit, rather than a professional production utility.
Does Simple MIDI contain ads or in-app purchases?
No, Simple MIDI is an open-source, free tool with no monetization gates or advertisements.
What should I use if Simple MIDI crashes on my iPad?
Users experiencing crashes may need to look for alternative MIDI players on the App Store, as Simple MIDI has not received updates since 2022.

Sources

  1. [1] App Store, source

Report last updated

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Simple MIDI, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Simple MIDI Intelligence Report.” Updated Sep 22, 2026. https://marlvel.ai/apps/simple-midi

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