KEY Memo-Notepad with Password

Contains adsIn-app purchases
4,4
851 reviews
50K+
Downloads
Content rating
Everyone
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About this app

【Features of the Memo App】



☆ A free memo app that can be used to manage sensitive notes, IDs, and passwords
☆ Of course, it can also be used as a regular memo pad
☆ Important memos can be locked with a password
☆ You can set your own password
☆ A simple and lightweight memo app with a lock function
☆ The lock function can be turned ON/OFF
☆ Supports unlocking with the device’s registered fingerprint (biometric authentication)
☆ Supports auto-save, so you don’t lose your work even if the app closes while editing
☆ Accidentally deleted memos are temporarily stored in the trash bin
☆ Manage memos with folders and color coding
☆ Free sorting of memos
☆ Paste images into memos
☆ Supports HTML tags
☆ Backup & restore function for easy transfer during device change or malfunction
☆ Theme switching to customize the look

The initial password is "0000".
Please change it in the settings.
If you forget your password, there is no recovery option.
※ Individual support may be considered only if you can prove your identity.

【Recommended for People Who】



☆ Want to use a simple memo app
☆ Want to store important information in a secure notepad
☆ Need a password lock feature
☆ Need biometric authentication (fingerprint, face, iris, etc.)
☆ Want to organize notes with folders and colors
☆ Want to freely rearrange memos
☆ Want to add images to memos
☆ Want HTML tag support
☆ Need to change character encoding
☆ Want to customize the appearance with themes

Dual Lock Supported!



・Startup → App launch password (can be ON/OFF)
・Memo access → Individual password (per memo, ON/OFF)
※ Startup password and individual memo password can be set separately
※ Both are "0000" by default

Fingerprint (Biometric) Authentication



Can be toggled ON/OFF from settings. Uses registered fingerprints for unlocking.
※ Not available if the device lacks biometric hardware.

Share Your Memos Easily



Tap the share button to send memos as text to other apps, or receive text from some apps.
※ Added character encoding change option (default UTF-8) to prevent garbled text

Other Features



✔ Show timestamps (last updated date) in memo list
✔ Sort memos by updated date, title, or custom drag-and-drop order
✔ Backup & restore all memos with encryption (cannot be opened in external apps)
✔ Individual lock per memo
✔ Trash bin with temporary storage for deleted memos
✔ Insert images in memos (shown inline when viewing)
✔ Change themes from settings

Recently Added Features



★ Require password when resuming from background
★ Custom memo ordering with drag-and-drop
★ Remember scroll position in memo list
★ Adjustable text size in memo view/edit screen
★ Folder and color categorization
★ Jump to top/bottom with volume keys
★ Support for some HTML tags (h, font, img, etc.)

🔑 KEY Memo Membership

A subscription plan with exclusive features is now available!
Check details in the app’s "Membership" menu.

Benefits:
・No ads
・Unlimited folder creation
・16 accent colors
・Trash retention up to 30 days / 100 items
・Cloud storage for backup & transfer
・Search by memo title or unlocked content
・Exclusive themes

email: info@mukku-kikaku.com
Twitter: https://twitter.com/Keymemo_MEI
YouTube: https://www.youtube.com/watch?v=h-3SN_LLvyk
Updated on
26 Aug 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App info and performance and Device or other IDs
This app may collect these data types
Personal info
Data isn’t encrypted
Data can’t be deleted

Ratings and reviews

4,3
811 reviews
Carbon Ackermenn
08 July 2022
It takes up a lot if space and it doesnt even have a password. The only positive thing I have to say about this app is that can you right which is the whole point of the app if ur trying to keep secrets in this notepad dont bc others may have easy access to ur secrets its kind of a good app but it has no password so over all I rate this app a 3
6 people found this review helpful
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むっく企画
08 July 2022
The password can be changed in the settings screen. Please set separate passwords for starting the application and for opening notes.
Zyrq Nait
08 March 2022
Simple and easy to use, just few taps and you're in for note taking perfect for quick jotting down lectures or to do lists.
10 people found this review helpful
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むっく企画
09 March 2022
Thank you for your review. We will do our best to satisfy you!
Qryz Chan
27 September 2022
Easy to use, with multiple free dark and light themes, and supports fingerprint authentication which is very convenient...
8 people found this review helpful
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What's new

8.4.0
・Add themes
・Various library updates
8.4.1
・Bug fixes
8.4.2
・Bug fixes
8.5.0
・Updated various libraries
・Added option to toggle auto-link on/off
・Slightly adjusted the layout of the memo viewing screen
8.5.1
・Bug fixes
8.5.2
・Bug fixes

App support

About the developer
MUKKU KIKAKU
mukku.engineering.inc@gmail.com
1-4-3, SENGENCHO, NISHI-KU WIZARD BLDG. 402 YOKOHAMA, 神奈川県 220-0072 Japan
+81 80-5597-3379

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