Take the opportunity to download the .apk file of BLACKJACK! 1.126 for free and take a look at users' reviews on Droid Informer. The installation package requires 33 MB on disk and it can be launched on Android devices 2.3.3 and above.
The way users see it, you can find a nice interface among the pluses of the app. Users write reviews pointing out that the weak sides of this application are download errors and multiple ads.