# BIG Challenge vs MLDR

The clearest difference is update cadence: MLDR at fortnightly against BIG Challenge's every 13 months. BIG Challenge's advantage is iOS requirement (15.0 vs 18.0). 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.

BIG Challenge ships an update every 13 months, MLDR fortnightly. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | BIG Challenge | MLDR |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Fortnightly** |
| Size | 76 MB | 55 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Imagro BV](https://appshunter.io/developer/1002373193) | [Novon Digital B.V.](https://appshunter.io/developer/1787886898) |

## What reviewers say

### BIG Challenge

[App page](https://appshunter.io/ios/app/big-challenge/id1060213833)

**Features:** macOS Compatibility

**In-app purchases:** none


### MLDR

[App page](https://appshunter.io/ios/app/mldr/id6740002893)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BIG Challenge free?

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

### Is MLDR free?

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

### Do BIG Challenge or MLDR have ads?

Neither BIG Challenge nor MLDR shows ads.

### Which is updated more often, BIG Challenge or MLDR?

BIG Challenge ships an update every 13 months, and MLDR fortnightly. Most recently, BIG Challenge was updated on October 7, 2026 and MLDR on October 9, 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.*