# What Is That vs Fastest Worker Challenges

The clearest difference is in-app purchases: Fastest Worker Challenges at none against What Is That's 1. What Is That's advantage is iOS requirement (11.0 vs 13.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. What Is That sells 1 one-off in-app purchase. Fastest Worker Challenges asks for nothing beyond the download.

What Is That ships an update fortnightly, Fastest Worker Challenges every 2 weeks. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | What Is That | Fastest Worker Challenges |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (38 ratings)](https://appshunter.io/ios/app/fastest-worker-challenges/id6504125840/reviews)** |
| Number of ratings | — | **38** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 2 weeks** |
| Monetization | — | Ad-supported |
| Size | 124 MB | 88 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Ocean View Games Ltd](https://appshunter.io/developer/1546243741) | [faizan khalid](https://appshunter.io/developer/1650548506) |

## What reviewers say

### What Is That

[App page](https://appshunter.io/ios/app/what-is-that/id1551655212)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| VIP | $0.99 | one-time |


### Fastest Worker Challenges

[App page](https://appshunter.io/ios/app/fastest-worker-challenges/id6504125840)

Test your reflexes and compete globally in a series of fast-paced mini-games. Tap, swipe, and slide to complete satisfying challenges and climb the leaderboards. Improve hand-eye coordination and focus while enjoying an addictive clicker experience.

**Highlights:** Global leaderboards, Variety of mini-games, Reflex and coordination training, Competitive challenges, Unlockable rewards, Stress relief

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is What Is That free?

What Is That is free to download, with in-app purchases available.

### Is Fastest Worker Challenges free?

Fastest Worker Challenges is free to download, with no in-app purchases.

### Do What Is That or Fastest Worker Challenges have ads?

Both What Is That and Fastest Worker Challenges show ads.

### Which is updated more often, What Is That or Fastest Worker Challenges?

What Is That ships an update fortnightly, and Fastest Worker Challenges every 2 weeks. Most recently, What Is That was updated on October 17, 2026 and Fastest Worker Challenges on October 12, 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.*