# UniMastery vs JustKM

The clearest difference is update cadence: JustKM at every 2 weeks against UniMastery's every 2 months. 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.

UniMastery ships an update every 2 months, JustKM every 2 weeks. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | UniMastery | JustKM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 46 MB | 86 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Unimastery Ltd.](https://appshunter.io/developer/1778500433) | [Chen Shoef](https://appshunter.io/developer/1895968602) |

## What reviewers say

### UniMastery

[App page](https://appshunter.io/ios/app/unimastery/id6738735338)

**Features:** macOS Compatibility

**In-app purchases:** none


### JustKM

[App page](https://appshunter.io/ios/app/justkm/id6784554704)

**In-app purchases:** none


## Frequently asked questions

### Is UniMastery free?

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

### Is JustKM free?

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

### Do UniMastery or JustKM have ads?

Neither UniMastery nor JustKM shows ads.

### Which is updated more often, UniMastery or JustKM?

UniMastery ships an update every 2 months, and JustKM every 2 weeks. Most recently, UniMastery was updated on October 13, 2026 and JustKM on October 24, 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.*