Calculator² - Advanced Scientific Calculator
v1.17 · 13.9 MB · code 49
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File information
UpdatedJun 13, 2024
PublishedJun 9, 2023
Packagecom.rwaltersapps.calculator2
Versionv1.17 (49)
Size13.9 MB
MD5f96c009cb3498a18deba351aa4b1ed61
Min SDK17
ABIsarmeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA141:A1:2A:EF:E7:F2:53:4D:41:02:BD:7A:8D:14:A5:8D:FB:01:73:9F
SignerCN=Richard Walters, OU=rwaltersapps, O=rwaltersapps, L=London, ST=England, C=GB
Total downloads10,000
This version10,000
DeveloperRichard Walters
Age ratingEveryone
What's new in v1.17
• We've fixed the user guide, what's new and privacy policy links.
Security scan
TRUSTED
- Developer signature verified 2024-06-13
- Signature SHA1 41:A1:2A:EF:E7:F2:53:4D:41:02:BD:7A:8D:14:A5:8D:FB:01:73:9F
- File MD5 f96c009cb3498a18deba351aa4b1ed61
How to install Calculator² - Advanced Scientific Calculator v1.17 on Android API 17+
Takes about 2 minutes. You'll need roughly 13.9 MB of free storage.
- Grab com.rwaltersapps.calculator2_49.apk — hit the Download button above (13.9 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 f96c009cb3498a18…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.rwaltersapps.calculator2_49.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=Richard Walters, OU=rwaltersapps, O=rwaltersapps, L=London, ST=England, C=GB. 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 Calculator² - Advanced Scientific Calculator — tap Open on the install screen, or find the Calculator² - Advanced Scientific Calculator icon in your app drawer (this build targets armeabi-v7a/arm64-v8a devices).
Common install errors for Calculator² - Advanced Scientific Calculator
- "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 API 17 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.