MIDI Scope vs EXPANSION EXPLORER
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MIDI Scope
Monitor MIDI activity on your iOS device. Filter events by type, group, or channel, with detailed packet interpretation in decimal and hexadecimal. Send feedback directly to the developer.
- Monitor MIDI activity
- Filter events by type, group, or channel
- Detailed event packet interpretation
- Raw packet data in decimal and hexadecimal
- iOS device compatibility
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MIDI Scope allows you to monitor MIDI activity using your iOS device. Features include the ability to filter events by individual type, continuous controller, or by group as well as MIDI channel. A comprehensive interpretation of each event packet is displayed. Raw packet data is shown in both decimal and hexadecimal formats. Please send feature requests and trouble reports to the support email listed on our web site. Please rate this app, there is a button on the settings page to make it easy.
EXPANSION EXPLORER
Discover, install, and manage additional content for compatible Yamaha arranger workstations. Explore a library of free Voices, Styles, and Multi Pads, and even get style recommendations based on audio files. Preview content before installing it directly to your instrument.
- Discover and install expansion content
- Search and filter by country, tempo, beat
- Analyze audio files for style recommendations
- Pre-listen to content before installation
- Wireless or USB installation
- Create favorite content lists
- Light and dark mode options
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Welcome to EXPANSION EXPLORER, a one-stop solution for discovering, installing and managing Expansion content on PSR-SX920/SX720/A5000 and Genos2 Arranger Workstations. ・What is Expansion Content? Expansion Content includes free additional Voices, Styles, Multi Pads, and more for you to install and enjoy on your Arranger Workstation. A growing library of Expansion Content is already available, featuring a diverse range of instruments and Styles from around the world. ・Search Search for content directly from the app's Home screen and use the advanced search options to filter results by country, tempo, beat, and more. ・Style Recommendations If you have an audio file of the song you want to play, Expansion Explorer can analyze it and recommend the most suitable Style from the Expansion Content library for your performance. ・PRE-LISTEN Content can be auditioned in the app before installation. You can listen to the auditions anytime, even without being connected to your instrument. ・INSTALL The app installs your chosen content directly to your instrument. Depending on your instrument’s specification, this is done wirelessly or via a USB cable. ・CONVENIENT FEATURES Create a list of your favorite content, view your preview and installation history, and switch between light and dark modes in the app. ---- CAUTIONS : Contents already installed by Yamaha Expansion Manager into the Expansion area of your keyboard, including pre-installed content in PSR-SX920 and 720, will be removed when installing new content from Yamaha EXPANSION EXPLORER. About pre-installed content in PSR-SX920 and 720, you will be able to reinstall them through the EXPANSION EXPLORER app, if desired.
Screenshots
Verdict
The clearest difference is review sentiment: MIDI Scope at 100% against EXPANSION EXPLORER's 25%. MIDI Scope also leads on rating (4.8 vs 3.0) and ratings volume (20 vs 2). EXPANSION EXPLORER's advantage is in-app purchases (none vs 3). On price, update cadence, ads and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. MIDI Scope sells 3 one-off in-app purchases. EXPANSION EXPLORER asks for nothing beyond the download.
MIDI Scope holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: MIDI Scope has 20 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of MIDI Scope's written reviews are positive against 25% of EXPANSION EXPLORER's.
MIDI Scope ships an update every 9 months, EXPANSION EXPLORER every 5 months. The most recent releases landed on September 9, 2026 and September 1, 2026 respectively.
| Parameter | MIDI Scope | EXPANSION EXPLORER |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (20 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 100.0% of reviews — better | 25.0% of reviews |
| Number of ratings | 20 — better | 2 |
| Update frequency | Every 9 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 1 MB | 154 MB |
| Age rating | 4+ | 4+ |
| Developer | Kinematic Systems | Yamaha Corporation |
Customer experience
MIDI Scope
EXPANSION EXPLORER
In-app purchases
MIDI Scope
- Small$0.99
- Small$2.99
- Large$4.99
EXPANSION EXPLORER
No in-app purchases
Questions
Is MIDI Scope free?
Is EXPANSION EXPLORER free?
Which has better reviews, MIDI Scope or EXPANSION EXPLORER?
Do MIDI Scope or EXPANSION EXPLORER have ads?
Which is updated more often, MIDI Scope or EXPANSION EXPLORER?
Other comparisons
