# ExtMemo vs DarklingNotebook

The clearest difference is in-app purchases: DarklingNotebook at none against ExtMemo's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ExtMemo sells 3 in-app purchases, starting at $2.99 per month. DarklingNotebook asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | ExtMemo | DarklingNotebook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/extmemo-personal-info-sphere/id6756668335/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 46 MB | 70 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ExtMemo AI Technology (Beijing) Co., Ltd](https://appshunter.io/developer/1855384465) | [雪莲 张](https://appshunter.io/developer/1865514682) |

## What reviewers say

### ExtMemo

[App page](https://appshunter.io/ios/app/extmemo-personal-info-sphere/id6756668335)

Capture, secure, and intelligently recall your ideas with an AI-powered external memory system. Offers end-to-end encryption for absolute privacy and seamless collaboration features. Export your data anytime without vendor lock-in.

**Highlights:** Smart Recall AI, Zero-Knowledge E2EE, Conflict-Free Collaboration, Encrypted Team Sharing, Web and Desktop App, Markdown Data Export, AI-Powered Mind Extension

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annually | $29.99 | per year |
| Linked Note AI | $3.99 | one-time |


### DarklingNotebook

[App page](https://appshunter.io/ios/app/darklingnotebook/id6787899352)

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

**In-app purchases:** none


## Frequently asked questions

### Is ExtMemo free?

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

### Is DarklingNotebook free?

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

### Do ExtMemo or DarklingNotebook have ads?

Neither ExtMemo nor DarklingNotebook shows ads.

### Which is updated more often, ExtMemo or DarklingNotebook?

ExtMemo ships an update every 2 weeks, and DarklingNotebook every 2 weeks. Most recently, ExtMemo was updated on October 24, 2026 and DarklingNotebook 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.*