ConCalc - Concrete Calculator
v3.06 · 2.1 MB · code 20
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File information
UpdatedFeb 5, 2014
PublishedFeb 5, 2014
PackageConCalc.Activity
Versionv3.06 (20)
Size2.1 MB
MD5edf1bbfb35d58fd5fe39cfee6ad6e720
Min SDK10
Malware scanWARNING
Signature SHA14B:70:99:9E:7F:D1:93:26:9B:FF:15:FB:C5:18:5B:A0:32:94:A0:5C
SignerCN=Gaf
Total downloads100,000
This version100,000
DeveloperLuso Studios
Age ratingEveryone
What's new in v3.06
Version 3.06
Bug Fixes - Improved input validation.
Version 3.05
Bug fix - Fixed a bug that would cause the app to crash if the waste field was left blank. Default waste is 5%, but can be changed to appropriate amount.
Note: Had to re-upload the fix since the last APK did not contain fix. Sorry for the inconvenience.
Should you have any questions or comments let us know via email.
Bug Fixes - Improved input validation.
Version 3.05
Bug fix - Fixed a bug that would cause the app to crash if the waste field was left blank. Default waste is 5%, but can be changed to appropriate amount.
Note: Had to re-upload the fix since the last APK did not contain fix. Sorry for the inconvenience.
Should you have any questions or comments let us know via email.
Security scan
WARNING
- Developer signature verified 2025-03-09
- Scanned for malware 2020-11-24 13:51:36
- Signature SHA1 4B:70:99:9E:7F:D1:93:26:9B:FF:15:FB:C5:18:5B:A0:32:94:A0:5C
- File MD5 edf1bbfb35d58fd5fe39cfee6ad6e720
How to install ConCalc - Concrete Calculator v3.06 on Android API 10+
Takes about 2 minutes. You'll need roughly 2.1 MB of free storage.
- Grab ConCalc.Activity_20.apk — hit the Download button above (2.1 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 edf1bbfb35d58fd5…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find ConCalc.Activity_20.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=Gaf. 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 WARNING).
- Done — open ConCalc - Concrete Calculator — tap Open on the install screen, or find the ConCalc - Concrete Calculator icon in your app drawer.
Common install errors for ConCalc - Concrete 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 10 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.