# LOCK MEMO - Secure Notes — Private notes with passcode

> Secure note-taking app with passcode protection and organizational features. (iPhone/iPad app by EasterEggs.)

- Source: https://appshunter.io/ios/app/lock-memo-secure-notes/id1070901429 (this page in markdown: same URL + `.md`)
- Developer: [EasterEggs](https://appshunter.io/developer/553389214)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Rating: 4.70/5 from 494 App Store ratings · 68 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 31 MB
- Languages: American English, French (France), German (Germany), Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), Latin American Spanish, Chinese (Traditional, Taiwan), Vietnamese
- Released: 2016-01-07
- Data updated: 2026-08-25
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/lock-memo-secure-notes/id1070901429/reviews.md

## What is LOCK MEMO?

LOCK MEMO is a simple and secure note app with password protection.

Designed with simplicity in mind, anyone can use it intuitively without complicated steps.

No complex setup is required.

Start using it today.

※ Password protection must be enabled in settings.

** Features **
• Create and edit notes  
• Passcode protection  
• Adjust font size  
• Character and line counter  
• Search notes  
• Folder management  
• iCloud backup  
• URL scheme (pwmm:)

Perfect for storing private information, ideas, daily notes, and personal content securely.

Keep your notes safe and organized with LOCK MEMO.

■ Terms of Use  
https://eeggs.jp/terms-of-use-en

## Key features

- Passcode protection
- Create and edit notes
- Folder management
- Search notes
- iCloud backup
- Adjustable font size

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Plan | $0.99 | per month |


## What do users think of LOCK MEMO?

Overall sentiment: positive

**Pros**

- 👍 Very easy to use and intuitive
- 🔒 Password protection and security features
- 💾 Reliable for storing notes and important information
- ⚡ Simple and lightweight application
- 📝 Great for quick memos and memory jogger
- 🎨 Clean, user-friendly interface
- 📱 Long-term reliability (users report 10+ years of use)
- 📢 Minimal and non-intrusive ads
- 🔐 Secure storage for passwords and sensitive data

**Cons**

- 🐛 Notes disappearing unexpectedly
- 🐛 Edit function stops working after extended use
- 📱 Compatibility issues with newer iOS versions
- ❌ No alphabetical sorting capability
- ❌ No search functionality
- ❌ No Touch ID support (despite claims)
- ❌ Limited storage space
- ❌ No text formatting (bold, underline)
- ❌ Cannot share/export notes
- 📢 Ads disrupt creative writing flow
- ❌ No option to remove ads with purchase

**Commonly reported bugs**

- Notes disappearing from folders
- Edit function becomes unavailable
- App incompatible with newer iOS versions
- Touch ID not functioning despite advertised
- Password recovery issues
- App crashes or freezes

**Most requested features**

- Alphabetical sorting of notes
- Search functionality
- Touch ID/biometric authentication
- Text formatting options (bold, underline, italics)
- Ability to share or export notes
- Picture upload capability
- Increased storage space
- Option to purchase ad-free version
- Dark mode option

## Recent user reviews (10 of 68)

All indexed reviews: https://appshunter.io/ios/app/lock-memo-secure-notes/id1070901429/reviews.md

### 5/5 — 気がつけば　以前に有料で購入しましたが

*2026-07-05*

以前に有料で購入しましたが、気がつけば宣伝が表示されています。

### 1/5 — エグい

*2026-03-27*

ずっと書いていた超重要なメモ、いきなり消えてた、、ありえへん、、しかも、色々思い出してもう一回メモし始めてある程度メモ打って終了したらまた消えてた、、完全に萎えた、、ためしに、あああって3文字程度打ったらそれは残ってた、、なに？文字数？容量？とにかくマジでこのアプリだけを信用して大事なメモを入れるのは要注意、他の人も消えたって書いてたレビューあったけど、必ず大事なのはどこかに保存するかバックアップするかしないと、マジで後悔する。ロック付きアプリってこともあって、あまり人に言えないようなメモしてたりするから、バックアップもちょっとしにくいかもやけど、それほど大事なメモやから本気できつい
原因不明

### 1/5 — 一瞬裏にしただけで毎回動画広告が流れる

*2026-02-28*

ほんの1.2秒程度別アプリのメモしたい内容を見に行った所、(完全に裏にしてアプリを別の物に切り替えた訳ではない)
毎回動画広告が流れるようになりました。

以前は広告があってもここまで頻繁ではなく、画像だけの広告もあったような気がするのですが…毎回動画広告が流れるとかなり煩わしいです。
今の所は流れる広告で不愉快、グロ、性的な内容の物はほぼありませんが、なんせ頻度がすごいので…
別のメモ帳へ鞍替えをしようと考えています。

動画広告を高頻度で何度も見たい方にはオススメのアプリです！

### 1/5 — Will not lock

*2025-09-05, version 3.7.3*

I could open like any other app. Would not lock.

### 5/5 — Easy

*2025-03-16, version 3.6.1*

Very easy to use

### 4/5 — ダークモード

*2024-12-01*

たくさん使用させていただいています。使い勝手も良くとても便利です。一点、ダークモードに設定している(iPhone内、アプリ内共に)のですが、メモを入力するときのキーボードにダークモードが反映されません。お忙しいとは思いますが、アップデートいただけると嬉しいです。

### 5/5 — 写真も追加できるようにして欲しい

*2024-11-11*

メモの管理ができるため助かってます
昨日は文字のサイズ、フォント、並び入れ替え
など出来るためとても良いです

あと写真だけ追加できればとても嬉しいです

### 5/5 — B

*2024-10-31, version 3.6.1*

Comes in very handy for notes & never forget important info.

### 4/5 — アプリから離れるとホームに戻ってしまうのが、、

*2024-10-06*

いつも使わせてもらっています。
　一点だけ、アプリから離れて戻ってくると、必ずホーム画面に戻されてしまう機能を変えて頂きたいです。Safariで調べながらこのアプリに書き込むようなことが多いので、戻るたびにホーム画面からスタートなのがちょっと、、。
　アプリを離れても、書き込んだ場所から始められるととても助かります。よろしくお願いいたします。
　この点以外はとても使いやすく、大変便利です。

### 3/5 — いつも利用させていただいています。

*2024-09-23*

いつも利用させています。
先程アップデートしたのですが、以下のようなバグ？か不便な点ありましたのでご報告失礼します。

・パスコードを入力する前に一瞬メモが見える
・パスコードを入力すると真っ白な画面になる
・iPhoneのシェイクで取り消しの機能が効かなくなった

申し訳ございませんが可能であれば修正など対応いただけますと幸いです…！

## Frequently asked questions about LOCK MEMO

### What does LOCK MEMO do?

LOCK MEMO is a note-taking application designed for simplicity and security. It allows users to create, edit, and organize notes while protecting them with a passcode. The app is ideal for storing sensitive personal information, ideas, and daily entries securely.

### What are the key features of LOCK MEMO?

Key features include robust passcode protection, the ability to create and edit notes, organize them into folders, and search through your entries. It also offers font size adjustment, character and line counters, iCloud backup for data safety, and a URL scheme for integration.

### Is LOCK MEMO free to use?

The application is free to download and use, offering core note-taking and security features. Additional functionalities or enhancements may be available through in-app purchases, as indicated by the app's monetization model.

### How do I ensure my notes are secure?

To ensure your notes are secure, you must enable passcode protection within the app's settings. This feature acts as a barrier, requiring the correct passcode to access your notes, thus safeguarding your private information.

### What is the primary use case for LOCK MEMO?

The primary use case for LOCK MEMO is to provide a secure and private space for users to store sensitive information. This includes personal thoughts, journal entries, confidential ideas, passwords, or any other content that requires protection from unauthorized access.

## Version history (last 5 releases)

### 3.8.3 — 2026-07-09

bugfix.

### 3.8.2 — 2026-06-23

bugfix.

### 3.8.1 — 2026-02-27

bugfix.

### 3.8.0 — 2026-02-26

bugfix.

### 3.7.7 — 2026-02-17

bugfix.

## Apps similar to LOCK MEMO

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [PManager(Password management)](https://appshunter.io/ios/app/pmanagerpassword-management/id1505193680) | — | Free | Utilities |
| [SIS Password Manager](https://appshunter.io/ios/app/sis-password-manager/id1604337794) | 5.0 (1) | Free | Utilities |
| [パスワード管理帳（パスメモ）](https://appshunter.io/ios/app/id757725348) | — | Free | Utilities |
| [KINGSOFT Password Manager](https://appshunter.io/ios/app/kingsoft-password-manager/id1510321870) | 5.0 (1) | Free | Utilities |
| [IIJ SmartKey](https://appshunter.io/ios/app/iij-smartkey/id974476420) | — | Free | Utilities |
| [Password 4 Lite](https://appshunter.io/ios/app/password-4-lite/id626623288) | 5.0 (1) | Free | Utilities |

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All apps by EasterEggs: https://appshunter.io/developer/553389214

## Related topics

[passcode mobile](https://appshunter.io/ios/topics/passcode-mobile)

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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 2026-08-25.*