# MSE OS-APP

> Control the Phasetech OS440 Amplifier with this dedicated application. (iPhone/iPad app by MS Electronics LLC.)

- Source: https://appshunter.io/ios/app/mse-os-app/id1398770138 (this page in markdown: same URL + `.md`)
- Developer: [MS Electronics LLC](https://appshunter.io/developer/1398645873)
- Category: Music
- Price: Free
- Rating: 1.80/5 from 5 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 27 MB
- Languages: English, Chinese
- Released: 2018-07-24
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/mse-os-app/id1398770138/reviews.md

## What is MSE OS?

App used to control the Phasetech OS440 Amplifier.

## Key features

- Phasetech OS440 Amplifier control
- Direct interface
- Settings management
- Function control

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/mse-os-app/id1398770138/reviews.md

### 1/5 — Does Not Work With iCloud???!!!

*2023-06-17*

Do not waste your money on the Phase Tech OS-440 or this app. Both are very disappointing. Hire a band instead. Less aggravation than these two aforementioned products.

### 1/5 — Worst App for Hardware

*2020-07-26*

The hardware can only connect through the app and the app doesn’t let you play any streamed music.

### 1/5 — Terrible

*2019-08-08*

Terrible UX. The amp doesn’t wake-up after it goes into stand-by. When it did finally wake up, it blasted crazy loud music in my backyard. Then the app wouldn’t respond, so I couldn’t control the music or volume. I had to physically unplug the the amp.

## Frequently asked questions about MSE OS

### What devices does MSE OS-APP support?

MSE OS-APP is designed for iPhone and iPod devices. It was released on July 24, 2018, and last updated on March 7, 2023.

### What is the age rating for MSE OS-APP?

MSE OS-APP has an age rating of 4+, making it suitable for a wide range of users.

### How often is MSE OS-APP updated?

The latest version of MSE OS-APP is 1.0.2, and it was last updated on March 7, 2023. This indicates it receives occasional updates.

### What is the user rating for MSE OS-APP?

MSE OS-APP has a user rating of 1.8 stars based on 5 ratings. This suggests a mixed to negative user reception.

### Does MSE OS-APP have ads?

No, MSE OS-APP does not contain advertisements. It is a free application with no in-app purchases or ads.

### What is the primary function of MSE OS-APP?

MSE OS-APP's primary function is to provide control over the Phasetech OS440 Amplifier, allowing users to manage its settings and functions.

### Is MSE OS-APP free to download?

Yes, MSE OS-APP is available for free download. There are no costs associated with acquiring the application itself.

## Version history (last 3 releases)

### 1.0.2 — 2023-03-07

Fixed failure to discover device problems in iOS16.

### 1.0.1 — 2022-08-30

Modify bugs and optimize user experience.

### 1.0.0 — 2018-06-19

This app has been updated by Apple to display the Apple Watch app icon.

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## More apps by MS Electronics LLC

- [MSE Sound](https://appshunter.io/ios/app/mse-sound/id6471643574)

All apps by MS Electronics LLC: https://appshunter.io/developer/1398645873

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*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 2026-06-10.*