Koofr
v4.2.18 · 9.2 MB · code 40218
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File information
UpdatedApr 16, 2026
PublishedMar 5, 2019
Packagenet.koofr.app
Versionv4.2.18 (40218)
Size9.2 MB
MD54c35b7f379e02efc7da2a990cba37b56
Min SDK24
Malware scanTRUSTED
Signature SHA160:2B:D7:BC:F7:6A:1F:3E:40:26:9C:44:0F:61:D9:00:00:EF:9B:76
SignerCN=Luka Zakrajsek, O=Koofr, L=Ljubljana, C=SI
Total downloads2,036
This version2,036
DeveloperKoofr
Age ratingEveryone
What's new in v4.2.18
Fixed a bug with autoupload to subfolders functionality when using the app in some languages.
Security scan
TRUSTED
- Developer signature verified 2025-06-01
- Signature SHA1 60:2B:D7:BC:F7:6A:1F:3E:40:26:9C:44:0F:61:D9:00:00:EF:9B:76
- File MD5 4c35b7f379e02efc7da2a990cba37b56
How to install Koofr v4.2.18 on Android 7.0 Nougat+
Takes about 2 minutes. You'll need roughly 9.2 MB of free storage.
- Grab net.koofr.app_40218.apk — hit the Download button above (9.2 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 4c35b7f379e02efc…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find net.koofr.app_40218.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=Luka Zakrajsek, O=Koofr, L=Ljubljana, C=SI. 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 Koofr — tap Open on the install screen, or find the Koofr icon in your app drawer.
Common install errors for Koofr
- "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 7.0 Nougat 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.