# iService/ DeviceOn vs MT

The clearest difference is iOS requirement: MT at 13.0 against iService/ DeviceOn's 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

iService/ DeviceOn ships an update every 4 months, MT every 2 months. The most recent releases landed on September 6, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | iService/ DeviceOn | MT |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 27 MB | 17 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Advantech](https://appshunter.io/developer/413213069) | [Steamrock Inc.](https://appshunter.io/developer/1705604272) |

## What reviewers say

### iService/ DeviceOn

[App page](https://appshunter.io/ios/app/iservice-deviceon/id6461349429)

**Features:** macOS Compatibility

**In-app purchases:** none


### MT

[App page](https://appshunter.io/ios/app/mt-11-moon-tracker/id6741104566)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iService/ DeviceOn free?

iService/ DeviceOn is free to download, with no in-app purchases.

### Is MT free?

MT is free to download, with no in-app purchases.

### Do iService/ DeviceOn or MT have ads?

Neither iService/ DeviceOn nor MT shows ads.

### Which is updated more often, iService/ DeviceOn or MT?

iService/ DeviceOn ships an update every 4 months, and MT every 2 months. Most recently, iService/ DeviceOn was updated on September 6, 2026 and MT on September 20, 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.*