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LOCK MEMO - Secure Notes

LOCK MEMO - Secure Notes

Private notes with passcode

494 ratings
68 reviews
With Ads
🔧 Utilities
🌟 Lifestyle
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • January 7, 2016
  • July 9, 2026

Developer

EasterEggs
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LOCK MEMO - Secure Notes screenshot #1 for iPhone
LOCK MEMO - Secure Notes screenshot #2 for iPhone
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About

This app offers a straightforward way to create and manage private notes with robust passcode protection. It's designed for intuitive use, requiring no complex setup to keep your personal information, ideas, and daily entries secure and organized.

✓Passcode protection
✓Create and edit notes
✓Folder management
✓Search notes
✓iCloud backup
✓Adjustable font size
Show original description

What users say

Summarized from real user reviews of LOCK MEMO. Based on 494 reviews and a 4.7/5 average, it highlights the 9 positives and 11 negatives reviewers mention most about this Utilities app.

Positive things

  • 👍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

Negative things

  • 🐛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
See all reviews

What's New in LOCK MEMO

3.8.3

July 9, 2026

bugfix.

Subscription plans

Premium Plan

Monthly subscription.

$0.991 Month
How to cancel LOCK MEMO subscription ⁉️

User reviews

Most RecentHighest RatedLowest Rated

気がつけば　以前に有料で購入しましたが

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。
ｍｔｓｍｔｓ

エグい

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
Show more
あやぴー(o^^o)あやぴー(o^^o)

一瞬裏にしただけで毎回動画広告が流れる

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！
万年花粉症ﾁｬﾝ万年花粉症ﾁｬﾝ

Will not lock

I could open like any other app. Would not lock.
Can definitely do betterCan definitely do better

Easy

Very easy to use
sneeknpeeks1sneeknpeeks1
See 63 more reviews

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User experience

🐞

Reported Bugs

6 issues

Notes disappearing from folders

Bug

Edit function becomes unavailable

Bug

App incompatible with newer iOS versions

Bug

Touch ID not functioning despite advertised

Bug

Password recovery issues

Bug

App crashes or freezes

Bug
✨

Requested Features

9 requests

Alphabetical sorting of notes

Feature

Search functionality

Feature

Touch ID/biometric authentication

Feature

Text formatting options (bold, underline, italics)

Feature

Ability to share or export notes

Feature

Picture upload capability

Feature

Increased storage space

Feature

Option to purchase ad-free version

Feature

Dark mode option

Feature

FAQ

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.