# Fill It Happy vs Stack n Crush!

The clearest difference is in-app purchases: Stack n Crush! at none against Fill It Happy's 4. Stack n Crush! also leads on update cadence (every 5 days vs monthly). Fill It Happy's advantage is ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Fill It Happy sells 4 one-off in-app purchases. Stack n Crush! asks for nothing beyond the download.

Fill It Happy ships an update monthly, Stack n Crush! every 5 days. The most recent releases landed on September 16, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Fill It Happy | Stack n Crush! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fill-it-happy/id1521881753/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 5 days** |
| Monetization | Free | — |
| Size | 62 MB | 183 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [振 曲](https://appshunter.io/developer/1077151938) | [Serenico Labs](https://appshunter.io/developer/1631801659) |

## What reviewers say

### Fill It Happy

[App page](https://appshunter.io/ios/app/fill-it-happy/id1521881753)

Test your observation and visual acuity with this unique puzzle game. Maneuver fillings to match given contours across dozens of diverse levels featuring animals, food, and themed adventures. Enjoy an entirely ad-free experience.

**Highlights:** Innovative contour matching gameplay, Dozens of diverse levels, Ad-free gaming experience, Boosts visual acuity, Variety of themes and patterns

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Undo+10 | $0.99 | one-time |
| remove Ads | $1.99 | one-time |
| All-in-One Pack | $1.99 | one-time |
| Undo + 50 | $2.99 | one-time |


### Stack n Crush!

[App page](https://appshunter.io/ios/app/stack-n-crush/id6476255129)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fill It Happy free?

Fill It Happy is free to download, with in-app purchases available.

### Is Stack n Crush! free?

Stack n Crush! is free to download, with no in-app purchases.

### Do Fill It Happy or Stack n Crush! have ads?

Stack n Crush! shows ads; Fill It Happy does not.

### Which is updated more often, Fill It Happy or Stack n Crush!?

Fill It Happy ships an update monthly, and Stack n Crush! every 5 days. Most recently, Fill It Happy was updated on September 16, 2026 and Stack n Crush! on September 9, 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.*