# Theremini Advanced Software Editor vs MidiQuestEssentialsi

The clearest difference is review sentiment: Theremini Advanced Software Editor at 60% against MidiQuestEssentialsi's 0%. Theremini Advanced Software Editor also leads on rating (3.8 vs 1.0) and in-app purchases (none vs 10). MidiQuestEssentialsi's advantage is update cadence (every 5 weeks vs every 4 months). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. MidiQuestEssentialsi sells 10 one-off in-app purchases. Theremini Advanced Software Editor asks for nothing beyond the download.

Theremini Advanced Software Editor holds the better App Store score, 3.8 against 1.0. That said, the two scores are not equally well evidenced: Theremini Advanced Software Editor has 13 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 60% of Theremini Advanced Software Editor's written reviews are positive against 0% of MidiQuestEssentialsi's.

Theremini Advanced Software Editor ships an update every 4 months, MidiQuestEssentialsi every 5 weeks. Both last shipped on June 1, 2026.

## The numbers

| Metric | Theremini Advanced Software Editor | MidiQuestEssentialsi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (13 ratings)](https://appshunter.io/ios/app/theremini-advanced-software-editor/id929763039/reviews)** | [1.0 (2 ratings)](https://appshunter.io/ios/app/midiquestessentialsi/id1338670761/reviews) |
| Number of ratings | **13** | 2 |
| Positive reviews | **60.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 50 MB | 52 MB |
| Requires iOS | **5.1.1** | 10.2 |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Moog Music Inc.](https://appshunter.io/developer/396776421) | [Sound Quest](https://appshunter.io/developer/1271850366) |

## What reviewers say

### Theremini Advanced Software Editor

[App page](https://appshunter.io/ios/app/theremini-advanced-software-editor/id929763039)

This application allows users to deeply customize and manage sounds for their Moog Theremini hardware synthesizer. It provides tools to create new presets, edit existing ones, and organize sound libraries. Users can also access an exclusive library of new presets to enhance their creative process.

**Highlights:** Create new presets, Edit existing presets, Craft new sounds in real-time, Manage preset libraries, Share sound libraries, Edit global settings

**In-app purchases:** none


### MidiQuestEssentialsi

[App page](https://appshunter.io/ios/app/midiquestessentialsi/id1338670761)

This application serves as a comprehensive editor and librarian for MIDI SysEx data, supporting a vast array of popular hardware instruments. It allows users to manage and manipulate sound parameters for a wide range of synthesizers and other MIDI devices.

**Highlights:** SysEx Editor, SysEx Librarian, Supports over 900 MIDI instruments, Parameter management, Sound editing

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dave Smith Tetra | $24.99 | one-time |
| Yamaha Reface CS | $24.99 | one-time |
| Yamaha Reface CP | $24.99 | one-time |
| TC-Helicon VoiceWorks | $29.99 | one-time |
| Roland D-50 | $39.99 | one-time |
| Waldorf Blofeld | $39.99 | one-time |
| Untergeek Matrix-6R | $39.99 | one-time |
| Dave Smith Toraiz AS-1 | $49.99 | one-time |
| Korg N364 | $54.99 | one-time |
| MQEssentials v1 All Instrument | $199.99 | one-time |


## Frequently asked questions

### Is Theremini Advanced Software Editor free?

Theremini Advanced Software Editor is free to download, with no in-app purchases.

### Is MidiQuestEssentialsi free?

MidiQuestEssentialsi is free to download, with in-app purchases available.

### Which has better reviews, Theremini Advanced Software Editor or MidiQuestEssentialsi?

Theremini Advanced Software Editor is rated higher. Theremini Advanced Software Editor averages 3.8 out of 5 from 13 ratings, while MidiQuestEssentialsi averages 1.0 from 2 ratings.

### Do Theremini Advanced Software Editor or MidiQuestEssentialsi have ads?

Neither Theremini Advanced Software Editor nor MidiQuestEssentialsi shows ads.

### Which is updated more often, Theremini Advanced Software Editor or MidiQuestEssentialsi?

Theremini Advanced Software Editor ships an update every 4 months, and MidiQuestEssentialsi every 5 weeks. Most recently, Theremini Advanced Software Editor was updated on June 1, 2026 and MidiQuestEssentialsi on June 1, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*