# RealTech Passkey vs ExtMemo

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

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

RealTech Passkey ships an update every 8 days, ExtMemo every 2 weeks. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | RealTech Passkey | ExtMemo |
| --- | --- | --- |
| 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 | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 2 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 39 MB | 46 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NEXT GENERATION NETWORK](https://appshunter.io/developer/1550545686) | [ExtMemo AI Technology (Beijing) Co., Ltd](https://appshunter.io/developer/1855384465) |

## What reviewers say

### RealTech Passkey

[App page](https://appshunter.io/ios/app/realtech-passkey/id6743424434)

Generate authentication codes for secure online account access. Easily add accounts by scanning QR codes and store security keys. Advanced encryption protects your personal data.

**Highlights:** OTP generation, QR code scanning for account setup, Security key storage, Advanced encryption, Quick authentication code generation

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

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is RealTech Passkey free?

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

### Is ExtMemo free?

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

### Do RealTech Passkey or ExtMemo have ads?

Neither RealTech Passkey nor ExtMemo shows ads.

### Which is updated more often, RealTech Passkey or ExtMemo?

RealTech Passkey ships an update every 8 days, and ExtMemo every 2 weeks. Most recently, RealTech Passkey was updated on October 9, 2026 and ExtMemo on October 24, 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.*