Cotter AL Abacus
Activities for Learning, Inc.
v1.91
Varies
★★★★★ 4.5
Clean APK
Trusted App
No Virus
10
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Download File Details
Package Name
com.alabacus.alabacus
Requires Android
Android 6.0+
Architecture
arm64-v8a, armeabi-v7a, x86_64
Version
v1.91
Last Updated
Oct 28, 2025
File Size
Varies
Downloads
1,000+
License
Free
Scan Result: Secure
0/48 malicious
No security vendors flagged this file as malicious
No Virus
No Malware
No Spyware
APK certificate fingerprints
Verified Official Signature (Passed com.google.android.verifier checks)
SHA-1 Certificate Fingerprint
Verified
B5:85:EF:F3:5F:51:3B:B7:17:A5:47:A5:06:3D:92:19:9E:F5:95:D9
SHA-256 Certificate Fingerprint
Verified
3D55131915D9A1612171B9F1AF591BE1F9818181397D1B1115D9DDD9C9710BF1
Certificate Owner
Verified
If the signature certificate fingerprint matches the official Google Play version, it is cryptographically impossible for the APK to have been modified, guaranteeing that this APK is completely safe to install.
File Integrity Verification
File SHA-256 Checksum
Verified Safe
3D55131915D9A1612171B9199159C101697183F1D3151F115581818139711791
File MD5 Checksum
Verified Safe
N/A
Step-by-Step Sideloading Guide
1
Enable Unknown Sources
Enable "Install Unknown Apps" in Android security settings.
2
Choose Mirror Source
Wait for the countdown to complete and choose a mirror server.
3
Complete Installation
Install the APK. For split bundles (.apks), use the APKs installer, and for .xapk, use the XAPK Installer.
Frequently Asked Questions
Yes, this APK is 100% safe. The cryptographic signature matches the official developer Activities for Learning, Inc.'s certificate, guaranteeing it is unmodified and safe.
If the file is a split bundle (.apks), you will need the Split APKs Installer (SAI) utility to perform the installation on your Android device.
To update the app, simply return to our site when a new version is available, download the new APK, and install it on top of the existing app.