Equation Solver v4.2.4
APK · 9.1 MB · version code 4002004 · Android 5.0+ · uploaded Sep 4, 2025
- Signature matches the Google Play version Details
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File information
- Version
- v4.2.4 (4002004)
- Uploaded
- Sep 4, 2025
- Size
- 9.1 MB
- Requires
- Android 5.0+ (API 21)
- CPU support
- ARM 64-bit
- Screen
- Small screens and larger
- MD5
- 4905b20ebeb42a5ae9fd1adfc297037f
- Signing certificate (SHA-1)
- 0C:6C:06:26:5D:83:5F:E3:85:41:A6:03:5D:D2:3C:F8:CE:70:B0:C1
- Signed by
- CN=Intemodino Group s.r.o., OU=IT, O=Intemodino Group s.r.o., C=CZ
- File name
- air-com-intemodino-xsolver-4002004-71599086-4905b20ebeb42a5ae9fd1adfc297037f.apk
- Package
- air.com.intemodino.xsolver
- Downloads (all versions)
- 100K+
- Age rating
- PEGI 3 · Everyone
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Sep 4, 2025.
- Certificate issued to “Intemodino Group s.r.o.” This is the certificate of the Google Play version.
- Same certificate as the 2 other versions checked
Store checks
- Developer signature verified Sep 4, 2025
- Validated against Google Play Sep 4, 2025
- Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself.
How to install Equation Solver on Android 5.0+
You'll need about 18.2 MB of free space.
- Download the APK — tap Download APK above (9.1 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 air-com-intemodino-xsolver-4002004-71599086-4905b20ebeb42a5ae9fd1adfc297037f.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 4905b20ebeb42a5ae9fd1adfc297037f. 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?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. 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 Equation Solver — 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 5.0+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for ARM 64-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.