# Number Jam 3D vs Happy Stacking Fun

The clearest difference is update cadence: Number Jam 3D at daily against Happy Stacking Fun's fortnightly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Number Jam 3D ships an update daily, Happy Stacking Fun fortnightly. The most recent releases landed on October 10, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Number Jam 3D | Happy Stacking Fun |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Daily** | Fortnightly |
| Size | 82 MB | 177 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Owen Gillett](https://appshunter.io/developer/1154015803) | [LanGang Zhang](https://appshunter.io/developer/1740225725) |

## What reviewers say

### Number Jam 3D

[App page](https://appshunter.io/ios/app/number-jam-3d/id6474667814)

**Features:** macOS Compatibility

**In-app purchases:** none


### Happy Stacking Fun

[App page](https://appshunter.io/ios/app/happy-stacking-fun/id6483686011)

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

**In-app purchases:** none


## Frequently asked questions

### Is Number Jam 3D free?

Number Jam 3D is free to download, with no in-app purchases.

### Is Happy Stacking Fun free?

Happy Stacking Fun is free to download, with no in-app purchases.

### Do Number Jam 3D or Happy Stacking Fun have ads?

Both Number Jam 3D and Happy Stacking Fun show ads.

### Which is updated more often, Number Jam 3D or Happy Stacking Fun?

Number Jam 3D ships an update daily, and Happy Stacking Fun fortnightly. Most recently, Number Jam 3D was updated on October 10, 2026 and Happy Stacking Fun on October 17, 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.*