# mStella vs KOC Master

The clearest difference is update cadence: mStella at weekly against KOC Master's monthly. On price, ads, in-app purchases and device support there is nothing between them.

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

mStella ships an update weekly, KOC Master monthly. The most recent releases landed on October 31, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | mStella | KOC Master |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Size | 145 MB | 30 MB |
| Requires iOS | 15 | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | +4 |
| Developer | [MOSAIC COMPANY LIMITED](https://appshunter.io/developer/1732625938) | [VIETNAM - VINATEKS TECHNOLOGY CORPORATION](https://appshunter.io/developer/1560838170) |

## What reviewers say

### mStella

[App page](https://appshunter.io/ios/app/mstella-koc-affiliate/id6785446254)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### KOC Master

[App page](https://appshunter.io/ios/app/koc-master/id6796763291)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is mStella free?

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

### Is KOC Master free?

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

### Do mStella or KOC Master have ads?

Neither mStella nor KOC Master shows ads.

### Which is updated more often, mStella or KOC Master?

mStella ships an update weekly, and KOC Master monthly. Most recently, mStella was updated on October 31, 2026 and KOC Master on November 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.*