Math Mind
v1.0.5 · 7.1 MB · code 7
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File information
UpdatedJan 16, 2026
PublishedAug 29, 2023
Packagecom.roamingsquirrel.android.mentalmath
Versionv1.0.5 (7)
Size7.1 MB
MD59c2c630641a18d8150ce50f63fe7f776
Min SDK24
Malware scanTRUSTED
Signature SHA13F:66:45:A4:56:0A:25:C8:D6:69:93:AB:44:E3:D4:8C:D4:16:04:B4
SignerCN=Tony Noon, OU=android, O=roamingsquirrel, L=Taipei, ST=Taipei City, C=TW
Total downloads10,000
This version10,000
Developerroaming squirrel
Age ratingEveryone
What's new in v1.0.5
* updated for new versions of Android
Security scan
TRUSTED
- Developer signature verified 2026-01-16
- Signature SHA1 3F:66:45:A4:56:0A:25:C8:D6:69:93:AB:44:E3:D4:8C:D4:16:04:B4
- File MD5 9c2c630641a18d8150ce50f63fe7f776
How to install Math Mind v1.0.5 on Android 7.0 Nougat+
Takes about 2 minutes. You'll need roughly 7.1 MB of free storage.
- Grab com.roamingsquirrel.android.mentalmath_7.apk — hit the Download button above (7.1 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 9c2c630641a18d81…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.roamingsquirrel.android.mentalmath_7.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=Tony Noon, OU=android, O=roamingsquirrel, L=Taipei, ST=Taipei City, C=TW. 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 Math Mind — tap Open on the install screen, or find the Math Mind icon in your app drawer.
Common install errors for Math Mind
- "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.