Polarity Checker
v1.4 · 1.7 MB · code 6
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File information
UpdatedMar 19, 2014
PublishedMar 19, 2014
Packagecom.dwa_ict.polaritychecker
Versionv1.4 (6)
Size1.7 MB
MD525373c94cdc848fec2a61f1dec9ccb0e
Min SDK3
Malware scanTRUSTED
Signature SHA1BF:CD:6A:6E:01:33:05:8D:FA:C9:CE:7B:60:B3:6D:2A:24:41:D6:86
SignerO=DWA ICT Solutions, C=NL
Total downloads100,000
This version100,000
DeveloperDWA ICT Solutions
Age ratingEveryone
What's new in v1.4
- Added: Move to SD support
Security scan
TRUSTED
- Developer signature verified 2014-03-20
- Scanned for malware 2020-10-06 21:12:50
- Signature SHA1 BF:CD:6A:6E:01:33:05:8D:FA:C9:CE:7B:60:B3:6D:2A:24:41:D6:86
- File MD5 25373c94cdc848fec2a61f1dec9ccb0e
How to install Polarity Checker v1.4 on Android API 3+
Takes about 2 minutes. You'll need roughly 1.7 MB of free storage.
- Grab com.dwa_ict.polaritychecker_6.apk — hit the Download button above (1.7 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 25373c94cdc848fe…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.dwa_ict.polaritychecker_6.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 O=DWA ICT Solutions, C=NL. 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 Polarity Checker — tap Open on the install screen, or find the Polarity Checker icon in your app drawer.
Common install errors for Polarity Checker
- "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 API 3 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.