# Zayed Green Challenge vs ○×

The clearest difference is in-app purchases: Zayed Green Challenge at none against ○×'s 2. Zayed Green Challenge also leads on ads (none vs shown) and update cadence (every 2 months vs every 13 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. ○× sells 2 in-app purchases, starting at $4.99 per month. Zayed Green Challenge asks for nothing beyond the download.

Zayed Green Challenge ships an update every 2 months, ○× every 13 months. The most recent releases landed on July 25, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Zayed Green Challenge | ○× |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/zayed-green-challenge/id1013437617/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 13 months |
| Monetization | Free | — |
| Size | 46 MB | 25 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SHEIKH ZAYED INTERNATIONAL PRIZE FOR THE ENVIRONMENT EST.](https://appshunter.io/developer/1303382587) | [kota tada](https://appshunter.io/developer/1658942612) |

## What reviewers say

### Zayed Green Challenge

[App page](https://appshunter.io/ios/app/zayed-green-challenge/id1013437617)

This application aims to raise environmental awareness by promoting sustainable development goals. It was founded by the Zayed International Foundation for the Environment to recognize and encourage environmental achievements.

**Highlights:** Environmental awareness, Sustainable development goals, Promotes environmental achievements, Founded by Zayed International Foundation

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

**In-app purchases:** none


### ○×

[App page](https://appshunter.io/ios/app/tic-tac-toe-simple/id6742046270)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad-free for 1 month | $4.99 | per month |
| Ad-free for 1 year | $29.99 | per year |


## Frequently asked questions

### Is Zayed Green Challenge free?

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

### Is ○× free?

○× is free to download, with in-app purchases available.

### Do Zayed Green Challenge or ○× have ads?

○× shows ads; Zayed Green Challenge does not.

### Which is updated more often, Zayed Green Challenge or ○×?

Zayed Green Challenge ships an update every 2 months, and ○× every 13 months. Most recently, Zayed Green Challenge was updated on July 25, 2026 and ○× on September 17, 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.*