Re: [android-developers] Re: How to: Free to Paid App and retain preference and db files?

Regarding the Internet permission - you don't have to use ads in the free version, rather offering the users some other incentive(s) to upgrade.

2012/7/1 Mystique <joven.chiew@gmail.com>

Hi, good to learn from all of you here.

One of the usual request for the paid version is to remove ads and Internet permission. Some user just do no feel good about turning on Internet permission. If I implement in-app billing, the Internet permission will still be there since it already has it in Manifest so user would not be happy. Having a separate install file/key will still have the same situation.

Next option is to add an export feature to the Free app like that Treking suggested so user can export it and import it in the Paid version. This is a good option but I am worried about user uninstalling the free app after purchase and thought the configuration and db will be automatically available. They might not even update to the latest free version that has the export feature.

I was evening thinking to automate it in this way if the free app detected the paid app running during start to automatically backup the configure and put it in a sdcard location and when user start the paid version it prompt manually whether to import it if the preference has not been set or option in the menu for import. Then, if user uninstall the free version immediately after installing the paid version then the user will lost the ability to export.

Do all these sounds complicated? Do you guys also implement LVL for paid app? If so, do we need to maintain a free version without the LVL code?

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