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Using Trial Services

In Hour 23, “Distributing Applications with the Marketplace,” you saw how easy it is to enable trial services in your application. Using trial services works to your advantage because many people are reluctant to buy an application without first trying it. If you take another look at Listing 23.2, you will see that it only takes a few lines of code to determine if your application is running in trial mode. That is the easy part. Determining what your application should do when in trial mode is a little bit more involved.

One thing you should consider when using trial mode is displaying advertisements. Typically, although not always, an application will display advertisements when in trial mode only; once the application has been purchased, the advertisements are no longer shown.


  

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