inSign
v3.75.0 · 13.4 MB · code 37500
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File information
UpdatedMar 24, 2026
PublishedJun 12, 2021
Packagede.is2.insign
Versionv3.75.0 (37500)
Size13.4 MB
MD5b129d9584fafa930ab2a9df3d14689ec
Min SDK21
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA190:8E:75:F5:51:78:4C:2D:91:2F:54:BC:4A:2B:4B:A2:59:F9:A1:88
SignerCN=Intelligent Solution Services AG, O=www.is2.de, C=DE
Total downloads50,000
This version50,000
DeveloperiS2 AG
Age ratingEveryone
What's new in v3.75.0
Config update for central server.
Security scan
TRUSTED
- Developer signature verified 2026-03-24
- Signature SHA1 90:8E:75:F5:51:78:4C:2D:91:2F:54:BC:4A:2B:4B:A2:59:F9:A1:88
- File MD5 b129d9584fafa930ab2a9df3d14689ec
How to install inSign v3.75.0 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 13.4 MB of free storage.
- Grab de.is2.insign_37500.apk — hit the Download button above (13.4 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 b129d9584fafa930…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find de.is2.insign_37500.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=Intelligent Solution Services AG, O=www.is2.de, C=DE. 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 inSign — tap Open on the install screen, or find the inSign icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for inSign
- "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.
- Works on one phone but not another — this build ships x86/x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.