Mental Abacus Expert
v1.5 · 28.5 MB · code 13
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File information
UpdatedSep 7, 2024
PublishedMay 2, 2024
Packagecom.lindbla.education.abacus
Versionv1.5 (13)
Size28.5 MB
MD5209339a34960e6cf2a59a335e41955a3
Min SDK12
Malware scanTRUSTED
Signature SHA1A1:04:40:8E:0E:ED:DC:04:BC:67:34:BE:63:DC:AC:88:90:58:03:36
SignerCN=Kristofer Skyttner, L=Link?ping, C=46
Total downloads10,000
This version10,000
DeveloperLindblå läs & skrivutveckling
Age ratingEveryone
What's new in v1.5
Compatible with modern Android devices
Security scan
TRUSTED
- Developer signature verified 2024-09-07
- Scanned for malware 2024-09-07 08:41:40
- Signature SHA1 A1:04:40:8E:0E:ED:DC:04:BC:67:34:BE:63:DC:AC:88:90:58:03:36
- File MD5 209339a34960e6cf2a59a335e41955a3
How to install Mental Abacus Expert v1.5 on Android API 12+
Takes about 2 minutes. You'll need roughly 28.5 MB of free storage.
- Grab com.lindbla.education.abacus_13.apk — hit the Download button above (28.5 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 209339a34960e6cf…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.lindbla.education.abacus_13.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=Kristofer Skyttner, L=Link?ping, C=46. 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 Abacus Expert — tap Open on the install screen, or find the Mental Abacus Expert icon in your app drawer.
Common install errors for Mental Abacus Expert
- "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 12 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.