Android

Lock Notes App & Password Memo

Lock Notes App & Password Memo has 64,378 installs (+0.9% a month, measured over 49 days to 2026-11-02), rated 4.4 from 1,055 ratings, #21,997 of 247,759 in Tools.

View in the Android store ↗
Installs
64,378
+151 (+0.2%) a week, measured over 15 days to 2026-11-02
Rating
4.4
1,055 ratings
+6 ratings (+0.6%) a week, measured over 15 days to 2026-11-02
Rank on Android
#236,256
of 2,989,816
down 12,873 since 2026-11-01
Version
8.5.4
Last updated 2026-04-26

Description

Show full descriptionShow less

【Secure Memo App – Notes, Password Manager & Lock Notepad】

☆ A free and secure memo app for managing private notes, passwords, and IDs
☆ Can also be used as a simple and easy notepad app
☆ Lock important memos with a password
☆ Set your own custom password
☆ Lightweight and simple secure notes app with lock feature
☆ Enable or disable lock anytime
☆ Supports biometric authentication (fingerprint, face, iris)
☆ Auto-save ensures your notes are never lost
☆ Deleted memos are safely stored in the trash bin
☆ Organize notes with folders and color labels
☆ Freely sort and rearrange memos
☆ Insert images into notes
☆ Supports HTML tags for advanced formatting
☆ Backup & restore for easy device transfer
☆ Customize themes and appearance

The initial password is "0000".
Please change it in settings.
If you forget your password, there is no recovery option.
※ Support may be provided only if identity can be verified.

【Perfect For Users Who】

☆ Want a simple and easy memo app
☆ Need a secure note app with password protection
☆ Want to store private information safely
☆ Prefer biometric login (fingerprint, face unlock, iris)
☆ Want to organize notes with folders and colors
☆ Need flexible sorting and note management
☆ Want to insert images into notes
☆ Need HTML support
☆ Want to change text encoding
☆ Prefer customizable themes

Dual Lock Security

・App Launch → Startup password (ON/OFF)
・Memo Access → Individual memo password (ON/OFF)
※ Separate passwords can be set
※ Default is "0000"

Biometric Authentication

Supports fingerprint, face unlock, and other biometric methods.
※ Not available on unsupported devices.

Easy Note Sharing

Share memos as text with other apps or receive text.
※ Encoding settings (default UTF-8) help prevent text corruption

Key Features

✔ Show timestamps (last updated)
✔ Sort by date, title, or custom order (drag & drop)
✔ Encrypted backup & restore
✔ Lock individual memos
✔ Trash bin for deleted notes
✔ Inline image display
✔ Theme customization

New Features

★ Lock required when returning from background
★ Drag & drop memo sorting
★ Restore scroll position
★ Adjustable text size
★ Folder & color organization
★ Quick jump with volume buttons
★ HTML tag support (h, font, img, etc.)

🔑 KEY Memo Membership

Unlock premium features with subscription.

Benefits:
・No ads
・Unlimited folders
・16 accent colors
・Extended trash storage (up to 30 days / 100 items)
・Cloud backup & transfer
・Search memos by title or content
・Exclusive themes

Is Lock Notes App & Password Memo safe?

StoreTally doesn't rate safety. Here's what the store and our tracking show:

  • Listed on Google Play.
  • Made by むっく企画; developer website listed: mukkuengineeringinc.com. Details →
  • On Google Play since 2017-09-12. Last updated 2026-04-26.
  • Rated 4.4 from 1,055 ratings. Details →

Reviews The reviews Google Play shows first (its most relevant), from the US store, in any language.

From 1,053 ratings.

Growth change in installs

Per Growth Growth % Actual change Measured over
day Not enough history yet
week +151 +0.2% +326 15.1 days
month +601 +0.9% +985 49.2 days
year Not enough history yet
How these figures are measured

Change in installs, scaled to each window from the real gap between crawls. A window needs a full period of history before it reports anything.

Tracking since 2026-09-13. History accumulates as changes are observed — check back soon.

Alternatives to Lock Notes App & Password Memo

Name Installs Rating
App Lock - Lock Apps, Password by InShot Inc. 70,466,424 4.8
Screen Lock - Time Password by Adria Devs 26,933,599 4.3
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Lock Screen Monitor & Password by Anshul Laddha 1,773,687 3.0
My Diary with Password Lock by Eco Mobile Security 1,132,009 4.7
Time Password Lock Screen by Move More Solutions 782,485 3.0
App Lock Password: Photo Vault by Fit Health Inc. 724,050 3.9
App Lock - Password, Lock Apps by iMediaStar 721,674 4.5
App Lock: Lock Apps Password by Seentul 253,140 —

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