Math 24 - Mental Math Cards
v2.8.1 · 20.9 MB · code 2801
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File information
UpdatedDec 8, 2025
PublishedAug 27, 2024
Packagecom.smellymonster.games.make24
Versionv2.8.1 (2801)
Size20.9 MB
MD51055e02ffb2ec89ed6c07ead877f2dc3
Min SDK21
ABIsarmeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA1E8:00:74:2E:40:11:C3:A8:2F:2D:E9:0B:CE:D4:A2:2F:44:48:25:DF
SignerCN=Little Smelly Monster, OU=Little Smelly Monster, O=Little Smelly Monster, L=Smelly Monster, ST=Monster, C=US
Total downloads500,000
This version500,000
DeveloperHappy Monster Alliance
Age ratingEveryone
What's new in v2.8.1
Fix bugs and improve user experience
Security scan
TRUSTED
- Developer signature verified 2025-12-08
- Signature SHA1 E8:00:74:2E:40:11:C3:A8:2F:2D:E9:0B:CE:D4:A2:2F:44:48:25:DF
- File MD5 1055e02ffb2ec89ed6c07ead877f2dc3
How to install Math 24 - Mental Math Cards v2.8.1 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 20.9 MB of free storage.
- Grab com.smellymonster.games.make24_2801.apk — hit the Download button above (20.9 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 1055e02ffb2ec89e…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.smellymonster.games.make24_2801.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=Little Smelly Monster, OU=Little Smelly Monster, O=Little Smelly Monster, L=Smelly Monster, ST=Monster, C=US. 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 24 - Mental Math Cards — tap Open on the install screen, or find the Math 24 - Mental Math Cards icon in your app drawer (this build targets armeabi-v7a/arm64-v8a devices).
Common install errors for Math 24 - Mental Math Cards
- "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 5.0 Lollipop 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.