The Android Market does not have the capability to offer different versions of the same application. We would like to offer previous versions so that users may take a step back if they have problems with a newly published version. Also we would like to offer different language versions that can easily be exchanged without uninstalling.

We offer only trial versions that work with limited functionality until they are registered. For registering you have to pay once with PayPal (from within the application) and then you just have to retrieve the license key with the same identification data.