BlackJack Offline v2.5
APK · 20.9 MB · version code 15 · Android 4.1+ · uploaded Sep 4, 2025
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File information
- Version
- v2.5 (15)
- Uploaded
- Sep 4, 2025
- Size
- 20.9 MB
- Requires
- Android 4.1+ (API 16)
- CPU support
- x86 32-bit, ARM 32-bit
- Graphics
- OpenGL ES 2.0+
- Screen
- Small screens and larger
- MD5
- 496049c4fb460034b0ccb1c2dbd57b0f
- Signing certificate (SHA-1)
- 9F:93:69:11:36:F2:B4:DF:5D:70:61:76:50:80:DA:A3:4E:A9:A4:1A
- Signed by
- O=Sincera Black Jack
- File name
- com-sincera-blackjack-15-71596314-496049c4fb460034b0ccb1c2dbd57b0f.apk
- Package
- com.Sincera.BlackJack
- Downloads (all versions)
- 5K+
- Age rating
- PEGI 12 · Low Maturity
What's new in v2.5
- More enjoyable gaming experience with new design and table colors
- 1K and 10K chips added and high betting
Permissions (2)
This version requests 2 permissions, none of them sensitive.
- Full network access android.permission.INTERNET
- View network connections android.permission.ACCESS_NETWORK_STATE
Security & authenticity
Security rating: Trusted
Signing certificate
- Certificate issued to “Sincera Black Jack” The developer's name — though anyone can put any name in a certificate.
Store checks
- Developer signature verified Apr 3, 2020
- Antivirus scan passed Sep 7, 2020
- Uploaded by “catappult” Platinum tier · 1,377 followers · uploading since 2018
Scans come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself.
How to install BlackJack Offline on Android 4.1+
You'll need about 41.8 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-sincera-blackjack-15-71596314-496049c4fb460034b0ccb1c2dbd57b0f.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 496049c4fb460034b0ccb1c2dbd57b0f. 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 BlackJack Offline — 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 4.1+). Download it again, or pick an older version.
- “App not compatible with your device” — this build contains native code for x86 32-bit, ARM 32-bit only. Devices with other processors can't install it.
- Blocked by Play Protect — Play Protect checks apps from outside the Play Store. Only continue if you trust the source.