How to create a 30 day free trial Android app?

android trialware
Niels picture Niels · Oct 30, 2010 · Viewed 13.2k times · Source

Is there any way to receive the installation date of an Android app? Or any other suggestions on how to accomplish a 30 day free trial version?

Answer

monoceres picture monoceres · Oct 30, 2010

Just save the time when the application was first run. Then compare the time each time the program starts.

Another more secure way (the above tactic could be beaten by a simple reinstall) is to have a server of yours authenticate the imei number of the device the first time it's run and then continue the above method.

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