Calculus
v1.47.47 · 36.9 MB · code 47
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File information
UpdatedFeb 27, 2024
PublishedJan 2, 2022
Packageio.ocedu.calculus
Versionv1.47.47 (47)
Size36.9 MB
MD528f7bdb5ac2a3c4473cf59722696e29a
Min SDK21
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA19B:CB:5C:B7:79:61:E6:34:64:EE:9F:DA:DD:89:5C:CE:EC:21:3C:5E
SignerCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Total downloads50,000
This version50,000
DeveloperOpen Education
Age ratingEveryone
Security scan
TRUSTED
- Developer signature verified 2024-02-27
- Scanned for malware 2024-04-11 15:55:02
- Signature SHA1 9B:CB:5C:B7:79:61:E6:34:64:EE:9F:DA:DD:89:5C:CE:EC:21:3C:5E
- File MD5 28f7bdb5ac2a3c4473cf59722696e29a
How to install Calculus v1.47.47 on Android 5.0 Lollipop+
Takes about 2 minutes. You'll need roughly 36.9 MB of free storage.
- Grab io.ocedu.calculus_47.apk — hit the Download button above (36.9 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 28f7bdb5ac2a3c44…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find io.ocedu.calculus_47.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=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US. 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 Calculus — tap Open on the install screen, or find the Calculus icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Calculus
- "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 5.0 Lollipop 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 x86/x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.