# 01 Zero One vs Shiftor

The clearest difference is iOS requirement: 01 Zero One at 9.0 against Shiftor's 15.0. 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.

## The numbers

| Metric | 01 Zero One | Shiftor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/01-zero-one/id1359573792/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 24 months | — |
| Monetization | Ad-supported | — |
| Size | 41 MB | 145 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Anas Almomany](https://appshunter.io/developer/1359573791) | [Raul Davrishev](https://appshunter.io/developer/1731060019) |

## What reviewers say

### 01 Zero One

[App page](https://appshunter.io/ios/app/01-zero-one/id1359573792)

A simple and easy numbers game where players tap zero or one based on the first digit of incoming numbers. Avoid tapping incorrect numbers to progress. It's a quick test of reflexes and number recognition.

**Highlights:** Tap zero or one, React to incoming numbers, Avoid wrong taps, Simple gameplay, Number recognition

**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 01 Zero One free?

01 Zero One is free to download, with no in-app purchases.

### Is Shiftor free?

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

### Do 01 Zero One or Shiftor have ads?

Both 01 Zero One and Shiftor show ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*