# Wave Balls vs Fill It Happy

The clearest difference is in-app purchases: Wave Balls at none against Fill It Happy's 4. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Fill It Happy sells 4 one-off in-app purchases. Wave Balls asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Wave Balls against 5.0 for Fill It Happy. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 8, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Wave Balls | Fill It Happy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/wave-balls/id1504818480/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/fill-it-happy/id1521881753/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | Free |
| Size | 126 MB | 62 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [App Swim LLC](https://appshunter.io/developer/1475582966) | [振 曲](https://appshunter.io/developer/1077151938) |

## What reviewers say

### Wave Balls

[App page](https://appshunter.io/ios/app/wave-balls/id1504818480)

Guide a ball through levels by controlling wave physics. Navigate obstacles and reach the finish line in this intuitive puzzle game.

**Highlights:** Wave physics control, Ball navigation, Obstacle courses, Level progression, Intuitive gameplay

**Features:** macOS Compatibility

**In-app purchases:** none


### 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, Vision Pro support

**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 |


## Frequently asked questions

### Is Wave Balls free?

Wave Balls is free to download, with no in-app purchases.

### Is Fill It Happy free?

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

### Which has better reviews, Wave Balls or Fill It Happy?

Wave Balls and Fill It Happy are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do Wave Balls or Fill It Happy have ads?

Neither Wave Balls nor Fill It Happy shows ads.

### Which is updated more often, Wave Balls or Fill It Happy?

Wave Balls ships an update monthly, and Fill It Happy monthly. Most recently, Wave Balls was updated on October 8, 2026 and Fill It Happy on October 27, 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.*