# MasterLab vs MK Congress

The clearest difference is ads: MK Congress at none against MasterLab's shown. MK Congress also leads on update cadence (every 5 days vs fortnightly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

MasterLab ships an update fortnightly, MK Congress every 5 days. The most recent releases landed on September 9, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | MasterLab | MK Congress |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 5 days** |
| Size | 62 MB | 3 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [L4M LAB SRL S](https://appshunter.io/developer/1642473314) | [LetzFair](https://appshunter.io/developer/1590302077) |

## What reviewers say

### MasterLab

[App page](https://appshunter.io/ios/app/masterlab/id1642473312)

**Features:** macOS Compatibility

**In-app purchases:** none


### MK Congress

[App page](https://appshunter.io/ios/app/mk-congress/id6754776192)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MasterLab free?

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

### Is MK Congress free?

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

### Do MasterLab or MK Congress have ads?

MasterLab shows ads; MK Congress does not.

### Which is updated more often, MasterLab or MK Congress?

MasterLab ships an update fortnightly, and MK Congress every 5 days. Most recently, MasterLab was updated on September 9, 2026 and MK Congress on September 23, 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.*