Know Abacus
v2.0 · 36.6 MB · code 106
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File information
UpdatedFeb 21, 2026
PublishedFeb 11, 2021
Packagecom.lookkidsw.KnowAbacus
Versionv2.0 (106)
Size36.6 MB
MD5ffc68ee8682041dedd02e523f0bcf0fb
Min SDK26
ABIsarmeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA163:80:AB:2D:2D:D5:B8:0F:FD:07:A4:4F:25:64:DD:7A:06:70:DD:93
SignerCN=Kittipong Mungnirun, OU=Unknown, O=lookkidsw, L=Bangkok, ST=Unknown, C=TH
Total downloads1,000,000
This version1,000,000
DeveloperKittipong.M
Age ratingEveryone
What's new in v2.0
Upgraded to support latest android.
Security scan
TRUSTED
- Developer signature verified 2026-02-21
- Signature SHA1 63:80:AB:2D:2D:D5:B8:0F:FD:07:A4:4F:25:64:DD:7A:06:70:DD:93
- File MD5 ffc68ee8682041dedd02e523f0bcf0fb
How to install Know Abacus v2.0 on Android 8.0 Oreo+
Takes about 2 minutes. You'll need roughly 36.6 MB of free storage.
- Grab com.lookkidsw.KnowAbacus_106.apk — hit the Download button above (36.6 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 ffc68ee8682041de…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.lookkidsw.KnowAbacus_106.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=Kittipong Mungnirun, OU=Unknown, O=lookkidsw, L=Bangkok, ST=Unknown, C=TH. 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 Know Abacus — tap Open on the install screen, or find the Know Abacus icon in your app drawer (this build targets armeabi-v7a/arm64-v8a devices).
Common install errors for Know Abacus
- "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 8.0 Oreo 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.
- Works on one phone but not another — this build ships armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.