# Sparky vs Stack

The clearest difference is ads: Stack at none against Sparky's shown. Stack also leads on device support (3 vs 1). On price, in-app purchases 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.

## The numbers

| Metric | Sparky | Stack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 days | — |
| Size | 7 MB | 29 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [YongJae Kim](https://appshunter.io/developer/1052227753) | [SouthIndus Labs](https://appshunter.io/developer/1894512281) |

## What reviewers say

### Sparky

[App page](https://appshunter.io/ios/app/sparky-idea-catcher/id6759247604)

**Features:** macOS Compatibility

**In-app purchases:** none


### Stack

[App page](https://appshunter.io/ios/app/stack-plan-and-progress/id6811904839)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Sparky free?

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

### Is Stack free?

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

### Do Sparky or Stack have ads?

Sparky shows ads; Stack does not.

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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.*