# Theremini Advanced Software Editor vs LE04 | AR

The clearest difference is price: Theremini Advanced Software Editor at Free against LE04 | AR's $2.99. Theremini Advanced Software Editor also leads on iOS requirement (5.1.1 vs 11.0). LE04 | AR's advantage is rating (4.8 vs 3.8) and update cadence (every 3 days vs every 4 months). On ads and in-app purchases there is nothing between them.

Theremini Advanced Software Editor is free to download; LE04 | AR costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

LE04 | AR holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: LE04 | AR has 1.5K ratings behind it against 13, 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 69% of LE04 | AR's.

Theremini Advanced Software Editor ships an update every 4 months, LE04 | AR every 3 days. The most recent releases landed on October 16, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Theremini Advanced Software Editor | LE04 | AR |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | [3.8 (13 ratings)](https://appshunter.io/ios/app/theremini-advanced-software-editor/id929763039/reviews) | **[4.8 (1.5K ratings)](https://appshunter.io/ios/app/le04-ar-909-drum-machine/id1530586523/reviews)** |
| Number of ratings | 13 | **1.5K** |
| Positive reviews | 60.0% of reviews | **69.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | **Free** | Paid |
| Best chart rank | — | **#178** |
| Size | 50 MB | 25 MB |
| Requires iOS | **5.1.1** | 11.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Moog Music Inc.](https://appshunter.io/developer/396776421) | [Cooperator Design](https://appshunter.io/developer/1206655266) |

## 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


### LE04 | AR

[App page](https://appshunter.io/ios/app/le04-ar-909-drum-machine/id1530586523)

**Currently charting:** #178 Top Paid · Music (US App Store)

This app emulates a classic 1980s analog drum machine, offering a hybrid synth/sample-based approach to beat creation. It provides intuitive controls for live tweaking and pattern switching, making it ideal for both studio work and live performance.

**Highlights:** Hybrid synth/sample-based drum creation, AUv3 plugin support, Intuitive controls for live tweaking, Pattern switching for live performance, Ableton Link integration, MIDI trigger and pattern support

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to use
- 🚀 Intuitive interface
- 🚀 Straightforward workflow
- 🔊 Great sound quality
- 🔊 Authentic 909 sound

**What reviewers complain about**

- 🐛 Crashes when saving patterns
- 🐛 Timing/sync issues with other apps
- 🔌 Doesn't record MIDI/audio in DAWs
- 📺 Screen doesn't fit some devices
- 🔇 Limited sound customization options

**Reported bugs**

- Crashes on startup for some users
- Volume/parameter changes not retained
- Timing issues when synced to other apps

**Requested features**

- Pattern chaining/song mode
- Ability to load custom samples
- Separate audio outputs for drums
- Longer pattern length options
- Midi learn and mapping capabilities


## Frequently asked questions

### Is Theremini Advanced Software Editor free?

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

### Is LE04 | AR free?

LE04 | AR costs $2.99, with no in-app purchases.

### Which has better reviews, Theremini Advanced Software Editor or LE04 | AR?

LE04 | AR is rated higher. Theremini Advanced Software Editor averages 3.8 out of 5 from 13 ratings, while LE04 | AR averages 4.8 from 1.5K ratings.

### Do Theremini Advanced Software Editor or LE04 | AR have ads?

Neither Theremini Advanced Software Editor nor LE04 | AR shows ads.

### Which is updated more often, Theremini Advanced Software Editor or LE04 | AR?

Theremini Advanced Software Editor ships an update every 4 months, and LE04 | AR every 3 days. Most recently, Theremini Advanced Software Editor was updated on October 16, 2026 and LE04 | AR on October 19, 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.*