PolyMath
v1.12 · 5 MB · code 12
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File information
UpdatedSep 17, 2025
PublishedOct 14, 2019
Packagecom.sorex.polymath
Versionv1.12 (12)
Size5 MB
MD5d38e66dfbf361611491cd4e384bc75aa
Min SDK9
Malware scanTRUSTED
Signature SHA110:CE:4B:B4:EC:A1:AA:0D:03:0A:39:24:24:93:38:16:6F:DC:E9:33
SignerCN=Geert Verschueren, O=Sorex, C=BE
Total downloads100
This version100
DeveloperVerschueren Geert
Age ratingEveryone
What's new in v1.12
The hint button now has a text description added to it.
Other small tweaks and changes.
Other small tweaks and changes.
Security scan
TRUSTED
- Developer signature verified 2021-11-11
- Scanned for malware 2021-11-11 01:02:50
- Signature SHA1 10:CE:4B:B4:EC:A1:AA:0D:03:0A:39:24:24:93:38:16:6F:DC:E9:33
- File MD5 d38e66dfbf361611491cd4e384bc75aa
How to install PolyMath v1.12 on Android API 9+
Takes about 2 minutes. You'll need roughly 5 MB of free storage.
- Grab com.sorex.polymath_12.apk — hit the Download button above (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 d38e66dfbf361611…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.sorex.polymath_12.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=Geert Verschueren, O=Sorex, C=BE. 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 PolyMath — tap Open on the install screen, or find the PolyMath icon in your app drawer.
Common install errors for PolyMath
- "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 9 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.