Notepad - With Lock, Backup

Easy and quick. Protect your notes with inbuilt-lock. Set your favorite themes.

Lucidnap Developers · com.lucidnap.notepad

Not rated yet 50K+ downloads v4.0.3 14 MB Android 5.0+ PEGI 3 · Everyone

Download APK 14 MB All versions

Signature matches the Google Play version Details

Notepad - With Lock, Backup screenshot 1

Notepad - With Lock, Backup screenshot 2

Notepad - With Lock, Backup screenshot 3

Notepad - With Lock, Backup screenshot 4

Notepad - With Lock, Backup screenshot 5

Notepad - With Lock, Backup screenshot 6

At a glance

Latest version: v4.0.3 (23)
Updated: Nov 24, 2025 (10 months ago)
APK size: 14 MB
Requires: Android 5.0+ (API 21)
CPU support: Any (no native code)
Category: Productivity (app)
Listed since: Mar 14, 2021 (at least)
Permissions: 13
Website: lucidnap.in
Developer contact: [email protected]

About this APK

Notepad - With Lock, Backup is an app by Lucidnap Developers in the Productivity category, listed since at least March 2021. It has no native code, so it runs on any Android processor.

Since version 3.0.3, the APK grew from 6.7 MB to 14 MB and the minimum Android version rose from 4.4 to 5.0. It asks for 13 permissions, none of them sensitive. It asks for the same permissions as version 4.0.2. The app offers in-app purchases through Google Play and can read the advertising ID that ad and analytics services use.

What's new in v4.0.3

★ Latest Android versions support. ★ Minor bug fixes

Description

From the listing uploaded by “appupdater”.

Save your notes quickly and easily! Write down your thoughts, plans or any important tasks and never worry about others accessing your data. Notepad comes with a comprehensive list of features: ✅ In built app lock: Pattern, pin and password ✅ Save the notes as text/PDF ✅ Back up and restore of the notes ✅ Colourful themes ✅ Auto night mode ✅ Text to speech ✅ Auto lock when the app is minimised ✅ Simple and easy to use interface Used by tens of thousands of users. Try it today! 📚 Write to us on [email protected] Thank you :)

Version history

4 versions are listed, going back to v3.0.3. Since v4.0.1 it requires Android 5.0+.

v4.0.3 LATEST Nov 24, 2025 14 MB TRUSTED v4.0.2 Feb 27, 2025 7.5 MB TRUSTED v4.0.1 Jan 9, 2025 7.5 MB TRUSTED v3.0.3 Jun 5, 2024 6.7 MB TRUSTED

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Nov 24, 2025.
Certificate issued to “Lucidnap Developers” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Nov 24, 2025
Validated against Google Play Nov 24, 2025
Signed byCN=Lucidnap Developers, OU=Lucidnap Developers, ST=Karnataka, C=91
Signing certificate (SHA-1)18:FE:67:B4:C2:E5:F2:81:77:A2:7E:4D:3C:0A:F4:0F:04:E9:F2:8B
File MD514d9cb0f25304bb97459f5a2257f7fdd
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (13)

Notepad - With Lock, Backup requests 13 permissions, none of them sensitive.

Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Advertising ID com.google.android.gms.permission.AD_ID
Control vibration android.permission.VIBRATE
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
In-app purchases (Google Play Billing) com.android.vending.BILLING
Prevent the device from sleeping android.permission.WAKE_LOCK
Run at startup android.permission.RECEIVE_BOOT_COMPLETED
Run foreground services android.permission.FOREGROUND_SERVICE
Use fingerprint hardware android.permission.USE_FINGERPRINT
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Portrait screen android.hardware.screen.portrait

Notepad - With Lock, Backup APK: questions and answers

Is there a version of Notepad - With Lock, Backup for older Android phones?

The current version needs Android 5.0 or later. Version 3.0.3 is the newest listed build that installs on Android 4.4 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 3.0.3 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is Notepad - With Lock, Backup free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the Notepad - With Lock, Backup APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 14d9cb0f25304bb97459f5a2257f7fdd.