# Shiftor vs Voltix Storm

The clearest difference is ads: Voltix Storm at none against Shiftor's shown. Shiftor's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17). 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 | Shiftor | Voltix Storm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Every 9 days |
| Size | 145 MB | 8 MB |
| Requires iOS | **15.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Raul Davrishev](https://appshunter.io/developer/1731060019) | [Dora Schoenholz](https://appshunter.io/developer/1880317982) |

## What reviewers say

### Shiftor

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Voltix Storm

[App page](https://appshunter.io/ios/app/voltix-storm/id6759711461)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Shiftor free?

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

### Is Voltix Storm free?

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

### Do Shiftor or Voltix Storm have ads?

Shiftor shows ads; Voltix Storm 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.*