# ExtMemo - Personal Info Sphere — New Info-Chain, Smart Privacy.

> AI-powered encrypted note-taking and idea recall system. (iPhone/iPad app by ExtMemo AI Technology (Beijing) Co., Ltd.)

- Source: https://appshunter.io/ios/app/extmemo-personal-info-sphere/id6756668335 (this page in markdown: same URL + `.md`)
- Developer: [ExtMemo AI Technology (Beijing) Co., Ltd](https://appshunter.io/developer/1855384465)
- Category: Utilities, Business
- Price: Free with in-app purchases
- Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 46 MB
- Languages: American English
- Released: 2026-02-08
- Data updated: 2026-10-01
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/extmemo-personal-info-sphere/id6756668335/reviews.md

## What is ExtMemo?

[+] Unique Info-Chain Architecture
- Group related information into sequential chain, not folders.
- Connect fragmented information into one organized thread.
- Quick Chain Creation — create a new chain and connect it to the current one.
- Add daily or milestone updates to track projects end-to-end.
- Track height changes and dental visits in chronological chains.
- Give each travel day its own note, with plans and bookings in one chain.

[+] End-2-End Encrypted, and Searchable
- Granular Flexible Encryption: Encrypt an entire note or only its most sensitive content.
- Chain-Wide Search: Unencrypted notes can index and search the entire Note Chain.
- Stored neither on the server nor on your device: only briefly in memory when needed for decryption.
- Flexible Face ID & Fingerprint Protection — for encrypted content, app access, or not at all.

[+] Visible Todos In Context
- Todos stay in context: Part of your meeting notes, not a separate task list.
- Simple by design: Just set a due date. No complicated setup.
- Visualize dependencies: See what to do first and what comes next at a glance.
- Organize your thoughts: Turn ideas and tasks into a visual mind map.
- Track completion automatically: Completion time is recorded automatically.
- Stay on track: Get daily reminders for todos due within the next 5 days.
- Manage time-sensitive benefits: Never lose track of unused coupons, credits, or expiring offers.

[+] Synced to Desktop (Web App), More Powerful, Maximum Efficiency
- Work seamlessly across devices: Stay in sync and handle information more efficiently on the desktop.
- Import with ease: Bring your notes into ExtMemo with JSON or Markdown.
- Export everything: Export your entire note collection in Markdown for easy access and portability.
- Explore your knowledge visually: Use the Nebula View to see semantically connected Note Chains at a glance.
- Build your todo flow visually: Drag todos into place and connect them with dependencies.

[+] Valuable & Private Information, Shared Securely
- Share entire chains: Share Note Chains securely with teammates or family members.
- Share encrypted content: E2EE-protected information can be shared without giving up privacy.
- Everyone adds their own notes: Members can add or update notes without interfering with each other.
- Keep information up to date: Multiple people can update the same chain, keeping everyone aligned on the latest status.

[+] More Features
- AI Assistant — Your intelligent companion for understanding, finding, and managing your information.
- Turn off AI Assistant anytime — it won't access your information.
- Sign in instantly with Apple or Google — no separate account needed.
- Markdown Editor: Write and format notes with Markdown.
- Cross-Chain Links: Link chains together and jump between them instantly.
- Bookmarks: Save important notes for quick access.
- Dark Mode: A comfortable experience in low-light environments.
- Flexible E2EE Rules: Choose what to encrypt: manually, everything, or everything except the top note.
- Two Visual Styles: Choose between Simple and Classic styles.
- Arrange the information in your Info-Chain in any order you like.

Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annually | $29.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Linked Note AI | $3.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/extmemo-personal-info-sphere/id6756668335/reviews.md

### 5/5 — Simple and beautiful.

*2026-02-15*

You don’t need to think about folder, tag, title. Just new a memo and write down your ideas. Ai may help you to find it out, but when you need it.

## Frequently asked questions about ExtMemo

### What is ExtMemo AI Notes?

ExtMemo AI Notes is an external memory system designed for capturing and recalling ideas. It utilizes AI for smart recall and offers robust end-to-end encryption for privacy.

### How does ExtMemo AI Notes ensure privacy?

ExtMemo AI Notes employs a zero-knowledge architecture with end-to-end encryption (E2EE). Your data is encrypted on your device, and the developers do not have access to your keys or content.

### Can I collaborate with others using ExtMemo AI Notes?

Yes, ExtMemo AI Notes supports conflict-free collaboration and encrypted team sharing. Team-wide E2EE ensures that shared group data remains private.

### What devices does ExtMemo AI Notes support?

ExtMemo AI Notes is available on iPhone, iPad, and iPod. A web app and desktop experience are also offered for larger screens.

### Is ExtMemo AI Notes free to use?

ExtMemo AI Notes is free to download and use. It offers in-app purchases for additional features or services.

### How often is ExtMemo AI Notes updated?

The latest version of ExtMemo AI Notes is 2.3.1, last updated on April 23, 2026. Updates are released regularly to improve functionality and security.

### Can I export my data from ExtMemo AI Notes?

Yes, ExtMemo AI Notes allows you to export all your data to standard Markdown format with a single click, preventing vendor lock-in.

### What is the age rating for ExtMemo AI Notes?

ExtMemo AI Notes has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 2.3.28 — 2026-09-27

- Quick Chain Creation — create a new chain and connect it to the current one.
- Flexible Face ID & Fingerprint Protection — for encrypted content, app access, or not at all.
- Arrange the information in your Info-Chain in any order you like.
- Sign in instantly with Apple or Google — no separate account needed.
- Turn off AI Assistant anytime — it won't access your information.
- Fixed known issues.

### 2.3.26 — 2026-09-18

• Added a Disable AI Assistant setting. When disabled, the AI Assistant cannot access your information. Don't want AI to access your information? Just turn it off.
• Improved the Settings UI.
• Fixed known issues.

### 2.3.20 — 2026-09-09

1. auto-show new/updated note number
2. daily todo check

### 2.3.19 — 2026-08-26

- Fixed some known issues.
- More stable.

### 2.3.18 — 2026-08-20

- Guest Mode — Explore ExtMemo without registration

You can now start using ExtMemo immediately with Guest Mode. No registration is required, so you can explore the full experience before deciding whether to create an account.

With Guest Mode, you can:

* Protect your information with end-to-end encryption.
* Manage your To-Dos visually and keep track of what needs to be done.
* Build Note Chains to continuously update and expand the latest status of your projects, plans, and ideas.
* Use AI-powered features to organize and find the information you need.

Everything you create in Guest Mode is kept and can remain available when you complete registration and upgrade to a full account.

- Sign in with Apple

You can now sign in directly with your Apple account for a faster and more convenient registration experience. No need to create and remember another account—just use your Apple account to get started with ExtMemo.

We hope these improvements make it easier to discover ExtMemo and start building your personal external memory.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-01.*