Organic Chemistry Challenge
v2.0.6 · 16 MB · code 20006
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File information
UpdatedJun 2, 2020
PublishedJun 2, 2020
Packagecom.hkbu.ulip.organicchem
Versionv2.0.6 (20006)
Size16 MB
MD51e9d34418611c4b4a070829c890313e0
Min SDK28
ABIsx86, x86-64, armeabi, armeabi-v7a, arm64-v8a
Malware scanUNKNOWN
Signature SHA1D6:F4:30:34:A7:1B:DD:31:4D:34:0A:78:B1:A3:A3:B6:FA:59:4C:7E
SignerCN=Android, OU=Android, O=Google Inc., L=Mountain View, ST=California, C=US
Total downloads5,000
This version5,000
DeveloperApps Resource Centre
Age ratingEveryone
What's new in v2.0.6
Bug fixes
Security scan
UNKNOWN
- Developer signature verified 2020-06-02
- Scanned for malware 2021-01-07 04:51:15
- Signature SHA1 D6:F4:30:34:A7:1B:DD:31:4D:34:0A:78:B1:A3:A3:B6:FA:59:4C:7E
- File MD5 1e9d34418611c4b4a070829c890313e0
How to install Organic Chemistry Challenge v2.0.6 on Android 9 Pie+
Takes about 2 minutes. You'll need roughly 16 MB of free storage.
- Grab com.hkbu.ulip.organicchem_20006.apk — hit the Download button above (16 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 1e9d34418611c4b4…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.hkbu.ulip.organicchem_20006.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 UNKNOWN).
- Done — open Organic Chemistry Challenge — tap Open on the install screen, or find the Organic Chemistry Challenge icon in your app drawer (this build targets x86/x86-64/armeabi/armeabi-v7a/arm64-v8a devices).
Common install errors for Organic Chemistry Challenge
- "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 9 Pie 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/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.