# Wolfoo's Colors vs Slime Stack

The clearest difference is in-app purchases: Slime Stack at none against Wolfoo's Colors's 3. Slime Stack also leads on update cadence (every 4 days vs every 3 weeks). Wolfoo's Colors's advantage is ads (none vs shown) and iOS requirement (12.0 vs 15.1). On price and device support there is nothing between them.

Both are free to download. Wolfoo's Colors sells 3 in-app purchases, starting at $1.99 per month. Slime Stack asks for nothing beyond the download.

Wolfoo's Colors ships an update every 3 weeks, Slime Stack every 4 days. The most recent releases landed on October 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Wolfoo's Colors | Slime Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/wolfoos-colors-learning-book/id6503130200/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Subscription | — |
| Size | 130 MB | 44 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [WOLFOO LLC](https://appshunter.io/developer/1624835196) | [Meshal Alamri](https://appshunter.io/developer/1784274279) |

## What reviewers say

### Wolfoo's Colors

[App page](https://appshunter.io/ios/app/wolfoos-colors-learning-book/id6503130200)

Explore a vibrant world of colors, shapes, and creativity. Learn about primary colors, practice mixing hues, and engage in fun mini-games like coloring and quizzes. Create your own stories and bring drawings to life with a wide palette.

**Highlights:** Color recognition and mixing, Interactive mini-games, Creative coloring and drawing, Story creation and narration, Puzzle and quiz challenges, Develops fine motor skills

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Annual Subscription | $2.99 | per year |
| Unlock All | $4.99 | one-time |


### Slime Stack

[App page](https://appshunter.io/ios/app/slime-stack/id6759118152)

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

**In-app purchases:** none


## Frequently asked questions

### Is Wolfoo's Colors free?

Wolfoo's Colors is free to download, with in-app purchases available.

### Is Slime Stack free?

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

### Do Wolfoo's Colors or Slime Stack have ads?

Slime Stack shows ads; Wolfoo's Colors does not.

### Which is updated more often, Wolfoo's Colors or Slime Stack?

Wolfoo's Colors ships an update every 3 weeks, and Slime Stack every 4 days. Most recently, Wolfoo's Colors was updated on October 2, 2026 and Slime Stack on October 7, 2026.

---

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