Mental Arithmetic
v1.1.0 · 1.8 MB · code 8
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File information
UpdatedOct 29, 2024
PublishedAug 14, 2019
Packagevolodymyr.kuprych.mentalarithmetictrainer
Versionv1.1.0 (8)
Size1.8 MB
MD5e2dcb8c57705876b1379f5737f3635ef
Min SDK15
Malware scanTRUSTED
Signature SHA1D7:B3:7A:AB:85:10:FE:15:9C:8C:C7:FC:B1:2F:04:91:75:DC:58:4C
SignerCN=Volodymyr Kuprych, OU=MyOrgUnit, O=Org, L=Oliveira do Bairro, ST=Oliveira do Bairro, C=3770/302
Total downloads1,163
This version1,163
DeveloperVolodymyr Kuprych
Age ratingEveryone
What's new in v1.1.0
Fixed duel mode!
Security scan
TRUSTED
- Developer signature verified 2016-08-02
- Scanned for malware 2020-01-18 13:17:18
- Signature SHA1 D7:B3:7A:AB:85:10:FE:15:9C:8C:C7:FC:B1:2F:04:91:75:DC:58:4C
- File MD5 e2dcb8c57705876b1379f5737f3635ef
How to install Mental Arithmetic v1.1.0 on Android API 15+
Takes about 2 minutes. You'll need roughly 1.8 MB of free storage.
- Grab volodymyr.kuprych.mentalarithmetictrainer_8.apk — hit the Download button above (1.8 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 e2dcb8c57705876b…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find volodymyr.kuprych.mentalarithmetictrainer_8.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=Volodymyr Kuprych, OU=MyOrgUnit, O=Org, L=Oliveira do Bairro, ST=Oliveira do Bairro, C=3770/302. 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 Mental Arithmetic — tap Open on the install screen, or find the Mental Arithmetic icon in your app drawer.
Common install errors for Mental Arithmetic
- "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 15 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.