Notepad - With Lock, Backup
v4.0.1 · 7.5 MB · code 21
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File information
UpdatedJan 9, 2025
PublishedMar 14, 2021
Packagecom.lucidnap.notepad
Versionv4.0.1 (21)
Size7.5 MB
MD520171acc2b7bee3719491aa280d27ef7
Min SDK21
Malware scanTRUSTED
Signature SHA118:FE:67:B4:C2:E5:F2:81:77:A2:7E:4D:3C:0A:F4:0F:04:E9:F2:8B
SignerCN=Lucidnap Developers, OU=Lucidnap Developers, ST=Karnataka, C=91
Total downloads50,000
This version50,000
DeveloperLucidnap Developers
Age ratingEveryone
What's new in v4.0.1
★ Latest Android versions support.
★ Minor bug fixes
★ Minor bug fixes
Security scan
TRUSTED
- Developer signature verified 2025-01-09
- Signature SHA1 18:FE:67:B4:C2:E5:F2:81:77:A2:7E:4D:3C:0A:F4:0F:04:E9:F2:8B
- File MD5 20171acc2b7bee3719491aa280d27ef7
How to install Notepad - With Lock, Backup v4.0.1 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 7.5 MB of free storage.
- Grab com.lucidnap.notepad_21.apk — hit the Download button above (7.5 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 20171acc2b7bee37…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.lucidnap.notepad_21.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=Lucidnap Developers, OU=Lucidnap Developers, ST=Karnataka, C=91. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open Notepad - With Lock, Backup — tap Open on the install screen, or find the Notepad - With Lock, Backup icon in your app drawer.
Common install errors for Notepad - With Lock, Backup
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 5.0 Lollipop or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.