# Nim Challenge vs Shiftor

The clearest difference is ads: Nim Challenge at none against Shiftor's shown. Shiftor's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price 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.

## The numbers

| Metric | Nim Challenge | Shiftor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/nim-challenge/id6742116085/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Daily | — |
| Monetization | Free | — |
| Size | 11 MB | 145 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Gilbert Gonsalves](https://appshunter.io/developer/492123194) | [Raul Davrishev](https://appshunter.io/developer/1731060019) |

## What reviewers say

### Nim Challenge

[App page](https://appshunter.io/ios/app/nim-challenge/id6742116085)

Engage in a strategic game of Nim against your iPhone. Test your skills to see if you can master the game and avoid losing. Discover how quickly you can achieve victory.

**Highlights:** Play Nim against iPhone AI, Master strategic gameplay, Track learning time, Simple interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Shiftor

[App page](https://appshunter.io/ios/app/shiftor-the-math-game/id6759512118)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Nim Challenge free?

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

### Is Shiftor free?

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

### Do Nim Challenge or Shiftor have ads?

Shiftor shows ads; Nim Challenge does not.

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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.*