UseTool Converter - Calculator v2.2
APK · 7.3 MB · version code 30 · Android 4.0.3+ · uploaded Mar 19, 2025
The source store flagged this file with a security warning (Warning). We recommend not installing it. See other versions.
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File information
- Version
- v2.2 (30)
- Uploaded
- Mar 19, 2025
- Size
- 7.3 MB
- Requires
- Android 4.0.3+ (API 15)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 266c197c4bd4880ed312caababeec6d2
- Signing certificate (SHA-1)
- 66:E0:46:C5:A6:C3:EA:0E:29:1C:40:EB:5B:62:36:94:6D:DF:15:1F
- Signed by
- CN=Ivan Kravchenko, OU=CoreWillSoft, O=CoreWillSoft, L=Bonn, ST=Germany, C=DE
- File name
- com-corewillsoft-usetool-30-70206636-266c197c4bd4880ed312caababeec6d2.apk
- Package
- com.corewillsoft.usetool
- Downloads (all versions)
- 1.9K
- Age rating
- PEGI 3 · Everyone
What's new in v2.2
- Fixed currency converter
If you like our app, please take a moment and rate us in the Play Store. Thank you!
Permissions (6)
This version requests 6 permissions, 2 of them sensitive.
- Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
- Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
- Control vibration android.permission.VIBRATE
- Full network access android.permission.INTERNET
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Warning
Signing certificate
- Certificate issued to “CoreWillSoft” The developer's name — though anyone can put any name in a certificate.
Store checks
- Developer signature check failed Mar 19, 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. AAPKs doesn't scan files itself.
How to install UseTool Converter - Calculator on Android 4.0.3+
You'll need about 14.5 MB of free space.
- Download the APK — tap Download APK above (7.3 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-corewillsoft-usetool-30-70206636-266c197c4bd4880ed312caababeec6d2.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 266c197c4bd4880ed312caababeec6d2. 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 UseTool Converter - Calculator — 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 4.0.3+). Download it again, or pick an older version.
- 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.