# Stack Fill vs SpaceAnimals

The clearest difference is ads: SpaceAnimals at none against Stack Fill's shown. Stack Fill's advantage is update cadence (every 3 days vs every 16 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Stack Fill ships an update every 3 days, SpaceAnimals every 16 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Stack Fill | SpaceAnimals |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 16 months |
| Size | 104 MB | 153 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Huseyin Bener Bozkurt](https://appshunter.io/developer/1503888821) | [Thanh Tuyen Le Thi](https://appshunter.io/developer/1877598851) |

## What reviewers say

### Stack Fill

[App page](https://appshunter.io/ios/app/stack-fill/id6741890183)

**Features:** macOS Compatibility

**In-app purchases:** none


### SpaceAnimals

[App page](https://appshunter.io/ios/app/spaceanimals/id6742579020)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stack Fill free?

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

### Is SpaceAnimals free?

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

### Do Stack Fill or SpaceAnimals have ads?

Stack Fill shows ads; SpaceAnimals does not.

### Which is updated more often, Stack Fill or SpaceAnimals?

Stack Fill ships an update every 3 days, and SpaceAnimals every 16 months. Most recently, Stack Fill was updated on October 28, 2026 and SpaceAnimals on October 25, 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.*