Biology App v2.04
APK · 20.9 MB · version code 104 · Android 8.0+ · uploaded Nov 24, 2025
- Signature matches the Google Play version Details
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Answer this to unlock the download. It keeps automated downloaders away.
Compared with the latest version
The latest version is v2.09, uploaded May 23, 2026 — about 6 months after this one.
- Size: this file is 20.9 MB; the latest is 21.2 MB (339.6 KB larger).
- Both versions request the same permissions.
File information
- Version
- v2.04 (104)
- Uploaded
- Nov 24, 2025
- Size
- 20.9 MB
- Requires
- Android 8.0+ (API 26)
- CPU support
- Any (no native code)
- Screen
- Small screens and larger
- MD5
- 8cfec6688dea1024e77108c47100b2e9
- Signing certificate (SHA-1)
- AC:4B:39:75:09:FC:F5:C5:31:B9:25:2A:64:CA:A4:68:6E:F2:D3:A6
- Signed by
- CN=Daniel C?rdoba, OU=duhnnae.com, O=duhnnae.com, L=Terrassa, ST=Barcelona, C=es
- File name
- com-duhnnae-biologybiologia-104-72484904-8cfec6688dea1024e77108c47100b2e9.apk
- Package
- com.duhnnae.biologybiologia
- Downloads (all versions)
- 100K+
- Age rating
- PEGI 3 · Everyone
What's new in v2.04
Fixed player bug.
Added tests per category and per video. Added topic research.
Added study section. Added tasks. Added faqs.
New app design for categories. Added quick notes.
Added Marine Biology and other courses.
Biology lectures, lessons and books.
Permissions (11)
This version requests 11 permissions, 1 of them sensitive.
- Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
- Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
- Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
- Advertising ID com.google.android.gms.permission.AD_ID
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- In-app purchases (Google Play Billing) com.android.vending.BILLING
- Internal broadcast protection (app-defined) com.duhnnae.biologybiologia.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- Prevent the device from sleeping android.permission.WAKE_LOCK
- View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Signature matches the Google Play version Checked by the source store on Nov 24, 2025.
- Certificate issued to “duhnnae.com” This is the certificate of the Google Play version.
- Same certificate as the 5 other versions checked
Store checks
- Developer signature verified Nov 24, 2025
- Validated against Google Play Nov 24, 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 (5 other versions compared). AAPKs doesn't scan files itself.
How to install Biology App on Android 8.0+
You'll need about 41.7 MB of free space.
- Download the APK — tap Download APK above (20.9 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-duhnnae-biologybiologia-104-72484904-8cfec6688dea1024e77108c47100b2e9.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 8cfec6688dea1024e77108c47100b2e9. 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?”. If Google Play Protect shows a warning, read it before you continue: the source store rated this file Trusted, but only install apps from sources you trust. 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 Biology App — 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 8.0+). 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.