Katana Librarian
v15.4 · 3 MB · code 181
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File information
UpdatedJul 10, 2025
PublishedApr 17, 2021
Packagecom.appsforamps.katana
Versionv15.4 (181)
Size3 MB
MD532cb203ec3c24f36d165e57632788193
Min SDK19
Malware scanTRUSTED
Signature SHA11D:BC:25:00:76:D1:73:24:F5:A2:10:F0:D2:4E:91:85:5A:9C:E0:20
SignerCN=Sean Wilson, OU=Android, O=AppsForAmps, L=Kitchener, ST=ON, C=CA
Total downloads50,000
This version50,000
DeveloperApps For Amps
Age ratingEveryone
What's new in v15.4
Gen3 Chain drag-and-drop support
Security scan
TRUSTED
- Developer signature verified 2025-07-10
- Signature SHA1 1D:BC:25:00:76:D1:73:24:F5:A2:10:F0:D2:4E:91:85:5A:9C:E0:20
- File MD5 32cb203ec3c24f36d165e57632788193
How to install Katana Librarian v15.4 on Android 4.4 KitKat+
Takes about 2 minutes. You'll need roughly 3 MB of free storage.
- Grab com.appsforamps.katana_181.apk — hit the Download button above (3 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 32cb203ec3c24f36…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.appsforamps.katana_181.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=Sean Wilson, OU=Android, O=AppsForAmps, L=Kitchener, ST=ON, C=CA. 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 Katana Librarian — tap Open on the install screen, or find the Katana Librarian icon in your app drawer.
Common install errors for Katana Librarian
- "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 4.4 KitKat 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.