Easy Math v2.1
APK · 14.6 MB · version code 21 · Android 4.4+ · uploaded Feb 13, 2021
The source store flagged this file with a security warning (Warning). We recommend not installing it. See other versions.
Quick check before downloading
Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v1.8, uploaded Oct 29, 2024 — about 3 years after this one.
- Size: this file is 14.6 MB; the latest is 12 MB (2.6 MB smaller).
- Android: this version needs Android 4.4+; the latest needs Android 4.1+.
- The latest version no longer asks for: Change wifi multicast state, Run at startup.
File information
- Version
- v2.1 (21)
- Uploaded
- Feb 13, 2021
- Size
- 14.6 MB
- Requires
- Android 4.4+ (API 19)
- CPU support
- ARM 32-bit
- Graphics
- OpenGL ES 2.0+
- Screen
- Small screens and larger
- MD5
- 61fcecab7da4762008398ec8a6152c98
- Signing certificate (SHA-1)
- AE:E5:9F:47:1F:CC:CF:F6:5E:4F:B6:2C:9C:88:69:46:70:CF:6A:7D
- Signed by
- O=Hello World, OU=https://www.facebook.com/HellaflushRC/videos/804178436365164/, CN=Hello World Inc.
- File name
- com-helloworld-easymath-21-56155006-61fcecab7da4762008398ec8a6152c98.apk
- Package
- com.helloworld.easymath
- Downloads (all versions)
- 1K+
- Age rating
- PEGI 3 · Everyone
What's new in v2.1
Improve Stability
Permissions (5)
This version requests 5 permissions, none of them sensitive.
- Change wifi multicast state android.permission.CHANGE_WIFI_MULTICAST_STATE
- Full network access android.permission.INTERNET
- Prevent the device from sleeping android.permission.WAKE_LOCK
- Run at startup android.permission.RECEIVE_BOOT_COMPLETED
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Warning
Signing certificate
- Certificate issued to “Hello World” Not the developer's name (“Muhammet Göktaş”). Names in certificates can't be verified, so this alone proves nothing.
- Same certificate as the other version checked
Store checks
- Developer signature check failed Mar 11, 2025
- Uploaded by “catappult” Platinum tier · 1,377 followers · uploading since 2018
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself.
How to install Easy Math on Android 4.4+
You'll need about 29.2 MB of free space.
- Download the APK — tap Download APK above (14.6 MB). Chrome shows “File might be harmful” for every APK file; choose Download anyway only if you trust this file.
- Open the file — tap the download notification, or open Files › Downloads and tap com-helloworld-easymath-21-56155006-61fcecab7da4762008398ec8a6152c98.apk.
- Allow the install (first time only) — Android 8 and later asks for permission the first time an app opens an APK: tap Settings in the prompt, turn on Allow from this source, then go back. Manual path: Settings › Apps › Special app access › Install unknown apps (on Samsung: Settings › Apps › ⋮ › Special access). On Android 7 and older: Settings › Security › Unknown sources.
- Check the file (optional) — the MD5 of the downloaded file should be 61fcecab7da4762008398ec8a6152c98. If it differs, the file is damaged or was changed: delete it and download again.
- Tap Install — Android asks “Do you want to install this app?”. The source store flagged this file with a security warning; we recommend not installing it. If Play Protect blocks it, tap Cancel. If an earlier version is installed, this one only installs as an update when it is signed with the same certificate (SHA-1 shown above).
- Open Easy Math — tap Open on the install screen, or find it in your app drawer.
Common install problems
- “App not installed” — a version signed with a different certificate, or a newer version, is already installed (Android doesn't allow downgrades). Uninstall it first; back up your data, because uninstalling deletes it.
- “There was a problem parsing the package” — the file is incomplete, or your Android is too old (this version needs Android 4.4+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for ARM 32-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source; for this file we recommend not to.