# DDM vs CBT Thought Diary App

The clearest difference is in-app purchases: DDM at none against CBT Thought Diary App's 2. DDM also leads on device support (3 vs 1). CBT Thought Diary App's advantage is update cadence (every 2 months vs every 45 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. CBT Thought Diary App sells 2 in-app purchases, starting at $29.99 per year. DDM asks for nothing beyond the download.

DDM ships an update every 45 months, CBT Thought Diary App every 2 months. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | DDM | CBT Thought Diary App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (11 ratings)](https://appshunter.io/ios/app/cbt-thought-diary-app/id6478697575/reviews)** |
| Number of ratings | — | **11** |
| Positive reviews | — | 83.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 45 months | **Every 2 months** |
| Monetization | — | Freemium |
| Size | 71 MB | 10 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pro-Mapp Limited](https://appshunter.io/developer/1434502740) | [Aly Bairamov](https://appshunter.io/developer/1156046797) |

## What reviewers say

### DDM

[App page](https://appshunter.io/ios/app/ddm/id1438115417)

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

**In-app purchases:** none


### CBT Thought Diary App

[App page](https://appshunter.io/ios/app/cbt-thought-diary-app/id6478697575)

This app helps you track and transform your thoughts and emotions using the ABC model of Cognitive Behavioral Therapy. Log your experiences, gain insights into patterns, and challenge negativity for improved mental well-being. Securely store your data and export progress for personal review or sharing with professionals.

**Highlights:** ABC model thought logging, Historical emotional insights, PDF progress export, Privacy-focused data storage, Positive thinking guidance

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CBT Premium Yearly | $29.99 | per year |
| CBT Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is DDM free?

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

### Is CBT Thought Diary App free?

CBT Thought Diary App is free to download, with in-app purchases available.

### Do DDM or CBT Thought Diary App have ads?

Neither DDM nor CBT Thought Diary App shows ads.

### Which is updated more often, DDM or CBT Thought Diary App?

DDM ships an update every 45 months, and CBT Thought Diary App every 2 months. Most recently, DDM was updated on October 7, 2026 and CBT Thought Diary App on October 6, 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.*