Notepad - With Lock, Backup v4.0.2
APK · 7.5 MB · version code 22 · Android 5.0+ · uploaded Feb 27, 2025
- Same certificate as v4.0.3, which matches Google Play Details
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v4.0.3, uploaded Nov 24, 2025 — about 9 months after this one.
- Size: this file is 7.5 MB; the latest is 14 MB (6.5 MB larger).
- Both versions request the same permissions.
File information
- Version
- v4.0.2 (22)
- Uploaded
- Feb 27, 2025
- Size
- 7.5 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 775ada79a82bf47d597242ff33df21b8
- Signing certificate (SHA-1)
- 18:FE:67:B4:C2:E5:F2:81:77:A2:7E:4D:3C:0A:F4:0F:04:E9:F2:8B
- Signed by
- CN=Lucidnap Developers, OU=Lucidnap Developers, ST=Karnataka, C=91
- File name
- com-lucidnap-notepad-22-70034594-775ada79a82bf47d597242ff33df21b8.apk
- Package
- com.lucidnap.notepad
- Downloads (all versions)
- 50K+
- Age rating
- PEGI 3 · Everyone
What's new in v4.0.2
★ Latest Android versions support.
★ Minor bug fixes
Permissions (13)
This version 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
Security & authenticity
Security rating: Trusted
Signing certificate
- Certificate issued to “Lucidnap Developers” This is the certificate of the Google Play version.
- Same certificate as v4.0.3, which matches Google Play v4.0.3
Store checks
- Developer signature verified Feb 27, 2025
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (3 other versions compared). AAPKs doesn't scan files itself.
How to install Notepad - With Lock, Backup on Android 5.0+
You'll need about 15 MB of free space.
- Download the APK — tap Download APK above (7.5 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap com-lucidnap-notepad-22-70034594-775ada79a82bf47d597242ff33df21b8.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 775ada79a82bf47d597242ff33df21b8. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open Notepad - With Lock, Backup — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 5.0+). Download it again, or pick an older version.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.