# Master Key vs Thought Record

The clearest difference is in-app purchases: Thought Record at none against Master Key's 2. Master Key's advantage is update cadence (every 2 weeks vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Master Key sells 2 in-app purchases, starting at $2.99 per 7 days. Thought Record asks for nothing beyond the download.

Master Key ships an update every 2 weeks, Thought Record every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Master Key | Thought Record |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Size | 11 MB | 3 MB |
| Requires iOS | 16.2 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Shaw Zarkoub](https://appshunter.io/developer/1895860228) | [UrbanPyx LLC](https://appshunter.io/developer/1895180652) |

## What reviewers say

### Master Key

[App page](https://appshunter.io/ios/app/master-key-manifesting/id6781839646)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Master Key Premium — Weekly | $2.99 | per 7 days |
| Master Key Premium — Annual | $49.99 | per year |


### Thought Record

[App page](https://appshunter.io/ios/app/thought-record-cbt-notes/id6788916753)

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

**In-app purchases:** none


## Frequently asked questions

### Is Master Key free?

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

### Is Thought Record free?

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

### Do Master Key or Thought Record have ads?

Neither Master Key nor Thought Record shows ads.

### Which is updated more often, Master Key or Thought Record?

Master Key ships an update every 2 weeks, and Thought Record every 5 weeks. Most recently, Master Key was updated on October 24, 2026 and Thought Record on October 25, 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.*