# Decision Engine AI vs Decision Journal

The clearest difference is in-app purchases: Decision Engine AI at none against Decision Journal's 3. Decision Journal's advantage is update cadence (every 6 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Decision Journal sells 3 in-app purchases, starting at $1.99 per month. Decision Engine AI asks for nothing beyond the download.

Decision Engine AI ships an update every 2 months, Decision Journal every 6 days. The most recent releases landed on September 19, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Decision Engine AI | Decision Journal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 days** |
| Monetization | Free | — |
| Size | 2 MB | 3 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Kakhaber Sinauridze](https://appshunter.io/developer/1855981575) | [Sykes Holding Group LLC](https://appshunter.io/developer/6785681451) |

## What reviewers say

### Decision Engine AI

[App page](https://appshunter.io/ios/app/decision-engine-ai/id6760727264)

This app provides structured, intelligent breakdowns of decisions to help users think clearly and act with confidence. It aims to prevent circular thinking by offering quick, insightful analyses.

**Highlights:** Structured decision breakdowns, Intelligent analysis, Faster decision making, Clear thinking support, Actionable insights

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

**In-app purchases:** none


### Decision Journal

[App page](https://appshunter.io/ios/app/decision-journal-logbook/id6785911233)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decision Journal Premium Monthly | $1.99 | per month |
| Decision Journal Premium Yearly | $12.99 | per year |
| Decision Journal Premium Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is Decision Engine AI free?

Decision Engine AI is free to download, with no in-app purchases.

### Is Decision Journal free?

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

### Do Decision Engine AI or Decision Journal have ads?

Neither Decision Engine AI nor Decision Journal shows ads.

### Which is updated more often, Decision Engine AI or Decision Journal?

Decision Engine AI ships an update every 2 months, and Decision Journal every 6 days. Most recently, Decision Engine AI was updated on September 19, 2026 and Decision Journal 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.*