# TreeNotes vs Shadow Security

The clearest difference is ads: Shadow Security at none against TreeNotes's shown. TreeNotes's advantage is update cadence (every 2 weeks vs every 5 months) and iOS requirement (15.6 vs 18.0). On price, in-app purchases and device support there is nothing between them.

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

TreeNotes ships an update every 2 weeks, Shadow Security every 5 months. The most recent releases landed on September 22, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | TreeNotes | Shadow Security |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Size | 27 MB | 5 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Seiya.k](https://appshunter.io/developer/383021944) | [Stephen Luadzers](https://appshunter.io/developer/1867049030) |

## What reviewers say

### TreeNotes

[App page](https://appshunter.io/ios/app/treenotes-tree-outliner/id6754949841)

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

**In-app purchases:** none


### Shadow Security

[App page](https://appshunter.io/ios/app/shadow-security/id6759615832)

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

**In-app purchases:** none


## Frequently asked questions

### Is TreeNotes free?

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

### Is Shadow Security free?

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

### Do TreeNotes or Shadow Security have ads?

TreeNotes shows ads; Shadow Security does not.

### Which is updated more often, TreeNotes or Shadow Security?

TreeNotes ships an update every 2 weeks, and Shadow Security every 5 months. Most recently, TreeNotes was updated on September 22, 2026 and Shadow Security on September 9, 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.*