# Structured Outliner vs Checkl

The clearest difference is ads: Checkl at none against Structured Outliner's shown. Checkl also leads on iOS requirement (15.1 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Structured Outliner sells 1 one-off in-app purchase and Checkl sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Structured Outliner | Checkl |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | — |
| Size | 6 MB | 44 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Felipe Carraro](https://appshunter.io/developer/1887606432) | [Michael Safovich](https://appshunter.io/developer/1869751956) |

## What reviewers say

### Structured Outliner

[App page](https://appshunter.io/ios/app/structured-outliner/id6761066639)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $7.99 | one-time |


### Checkl

[App page](https://appshunter.io/ios/app/checkl/id6761582726)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Checkl Pro Plan - Monthly | $3.99 | per month |
| Checkl Pro - Yearly | $27.99 | per year |


## Frequently asked questions

### Is Structured Outliner free?

Structured Outliner is free to download, with in-app purchases available.

### Is Checkl free?

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

### Do Structured Outliner or Checkl have ads?

Structured Outliner shows ads; Checkl 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.*