# Structured Outliner vs MindPen

The clearest difference is ads: MindPen at none against Structured Outliner's shown. MindPen also leads on update cadence (every 4 days vs every 9 days) and device support (4 vs 2). On price and in-app purchases there is nothing between them.

Both are free to download. Structured Outliner sells 1 one-off in-app purchase and MindPen sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Structured Outliner ships an update every 9 days, MindPen every 4 days. The most recent releases landed on September 19, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Structured Outliner | MindPen |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 9 days | **Every 4 days** |
| Size | 6 MB | 34 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Felipe Carraro](https://appshunter.io/developer/1887606432) | [MOBIZATE](https://appshunter.io/developer/1885913602) |

## 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 |


### MindPen

[App page](https://appshunter.io/ios/app/mindpenmind-map-brainstorming/id6773913398)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MindPen Premium Monthly | $4.99 | per month |
| MindPen Premium Yearly | $19.99 | per year |
| MindPen Premium Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Structured Outliner free?

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

### Is MindPen free?

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

### Do Structured Outliner or MindPen have ads?

Structured Outliner shows ads; MindPen does not.

### Which is updated more often, Structured Outliner or MindPen?

Structured Outliner ships an update every 9 days, and MindPen every 4 days. Most recently, Structured Outliner was updated on September 19, 2026 and MindPen on September 11, 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.*