# Fill Blocks! vs Simon's Cat World

The clearest difference is in-app purchases: Fill Blocks! at none against Simon's Cat World's 4. Fill Blocks! also leads on iOS requirement (12.0 vs 15.0). Simon's Cat World's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. Simon's Cat World sells 4 one-off in-app purchases. Fill Blocks! asks for nothing beyond the download.

Fill Blocks! ships an update every 4 days, Simon's Cat World every 3 days. The most recent releases landed on September 29, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Fill Blocks! | Simon's Cat World |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 days | **Every 3 days** |
| Monetization | — | Free with in-app purchases |
| Size | 175 MB | 362 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Ezgi Evrensel](https://appshunter.io/developer/1664776677) | [Tactile Games Limited](https://appshunter.io/developer/1400704108) |

## What reviewers say

### Fill Blocks!

[App page](https://appshunter.io/ios/app/fill-blocks/id6480924092)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simon's Cat World

[App page](https://appshunter.io/ios/app/simons-cat-world/id6803510569)

Engage in a variety of puzzle games featuring a beloved cat character. Enjoy brain-teasing challenges like sudoku and sorting puzzles, with new content added regularly. Connect with a community of fellow cat enthusiasts through leaderboards and events.

**Highlights:** Variety of puzzle minigames, Cat-themed sudoku, Sorting puzzles, Regularly added new games, Community leaderboards and events, Cozy cat-themed gameplay

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Coin Pack | $0.99 | one-time |
| Coin Pack | $4.99 | one-time |
| Coin Pack | $9.99 | one-time |
| Coin Pack | $19.99 | one-time |


## Frequently asked questions

### Is Fill Blocks! free?

Fill Blocks! is free to download, with no in-app purchases.

### Is Simon's Cat World free?

Simon's Cat World is free to download, with in-app purchases available.

### Do Fill Blocks! or Simon's Cat World have ads?

Fill Blocks! shows ads; Simon's Cat World does not.

### Which is updated more often, Fill Blocks! or Simon's Cat World?

Fill Blocks! ships an update every 4 days, and Simon's Cat World every 3 days. Most recently, Fill Blocks! was updated on September 29, 2026 and Simon's Cat World on October 7, 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.*