# Challenge Sort vs Pet Pals World

The clearest difference is price: Challenge Sort at Free against Pet Pals World's $4.99. Challenge Sort also leads on ratings volume (9.7K vs 5) and iOS requirement (15.0 vs 17.0). Pet Pals World's advantage is review sentiment (100% vs 62%) and ads (none vs shown). On in-app purchases and device support there is nothing between them.

Challenge Sort is free to download; Pet Pals World costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Pet Pals World holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Challenge Sort has 9.7K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 62% of Challenge Sort's written reviews are positive against 100% of Pet Pals World's.

Challenge Sort ships an update fortnightly, Pet Pals World weekly. Both last shipped on November 10, 2026.

## The numbers

| Metric | Challenge Sort | Pet Pals World |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [4.5 (9.7K ratings)](https://appshunter.io/ios/app/challenge-sort-mind-relax/id6781243727/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/pet-pals-world/id6796870466/reviews)** |
| Number of ratings | **9.7K** | 5 |
| Positive reviews | 62.2% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Ad-supported | **Free** |
| Size | 151 MB | 36 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Lutfi AlBragi](https://appshunter.io/developer/1691520787) | [Travis Skeen](https://appshunter.io/developer/6796870468) |

## What reviewers say

### Challenge Sort

[App page](https://appshunter.io/ios/app/challenge-sort-mind-relax/id6781243727)

Engage your mind with a relaxing puzzle game featuring two distinct modes: classic water sorting and creative color arrangement. Enjoy a pressure-free experience with satisfying visuals and unlock beautiful artwork as you progress.

**Highlights:** Classic water sorting puzzles, Color arrangement logic challenges, Unlockable artwork, No timers or pressure, Satisfying visual feedback, Switch between game modes

**In-app purchases:** none


### Pet Pals World

[App page](https://appshunter.io/ios/app/pet-pals-world/id6796870466)

Hatch, raise, and grow a variety of pets from eggs on a vibrant island. Explore diverse biomes, decorate your home, and play with friends in a safe, family-friendly environment. Features include cooperative exploration and pet trading.

**Highlights:** Hatch and grow pets from eggs, Explore a living island with diverse biomes, Decorate customizable homes, Play with friends cooperatively, Trade pets and treasures, Family-friendly design with no ads or chat

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Challenge Sort free?

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

### Is Pet Pals World free?

Pet Pals World costs $4.99, with no in-app purchases.

### Which has better reviews, Challenge Sort or Pet Pals World?

Pet Pals World is rated higher. Challenge Sort averages 4.5 out of 5 from 9.7K ratings, while Pet Pals World averages 5.0 from 5 ratings.

### Do Challenge Sort or Pet Pals World have ads?

Challenge Sort shows ads; Pet Pals World does not.

### Which is updated more often, Challenge Sort or Pet Pals World?

Challenge Sort ships an update fortnightly, and Pet Pals World weekly. Most recently, Challenge Sort was updated on November 10, 2026 and Pet Pals World on November 10, 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.*