# Smart Runner Spelling Contest vs Sky Stack

The clearest difference is in-app purchases: Smart Runner Spelling Contest at none against Sky Stack's 10. Smart Runner Spelling Contest also leads on iOS requirement (12.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. Sky Stack sells 10 one-off in-app purchases. Smart Runner Spelling Contest asks for nothing beyond the download.

## The numbers

| Metric | Smart Runner Spelling Contest | Sky Stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Size | 197 MB | 18 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [RayGames](https://appshunter.io/developer/1725090177) | [Gigabyte LLC](https://appshunter.io/developer/1145126101) |

## What reviewers say

### Smart Runner Spelling Contest

[App page](https://appshunter.io/ios/app/smart-runner-spelling-contest/id6478657552)

**Features:** macOS Compatibility

**In-app purchases:** none


### Sky Stack

[App page](https://appshunter.io/ios/app/sky-stack-tower-block-game/id6760783698)

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 500 coins | $1.99 | one-time |
| Style Pack Celestial | $1.99 | one-time |
| Starter Bundle | $2.99 | one-time |
| Piggy Bank | $2.99 | one-time |
| Remove Ads | $3.99 | one-time |
| 1400 coins | $4.99 | one-time |
| Season Pass | $5.99 | one-time |
| 3500 Coins | $9.99 | one-time |
| 8000 Coins | $19.99 | one-time |
| 25000 Coins | $49.99 | one-time |


## Frequently asked questions

### Is Smart Runner Spelling Contest free?

Smart Runner Spelling Contest is free to download, with no in-app purchases.

### Is Sky Stack free?

Sky Stack is free to download, with in-app purchases available.

### Do Smart Runner Spelling Contest or Sky Stack have ads?

Both Smart Runner Spelling Contest and Sky Stack show ads.

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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.*