You could do that but you'd be in violation of the Google Play developer's agreement:
3. Pricing and Payments. However, if you want to collect fees after the free trial expires, you must collect all fees for the full version of the Product through the Payment Processor on the Market. https://play.google.com/intl/ALL_us/about/developer-distribution-agreement.html -John Coryat On Wednesday, February 6, 2013 7:06:10 AM UTC-6, reaktor24 wrote: > > I have had a read of this thread and have come to the conclusion that the > best method could be to offer a freely distributable demo version for > download on the Android market so people can try out your game. Then if > they like it enough to buy the full version they DO NOT purchase through > the flawed Android Play Store with its 30% cut to Google. Instead they are > directed to pay via PayPal to the developer directly and they receive an > emailed copy of the APK file along with a unique keyfile or something like > that. Then on startup of the App it checks for invalid keyfiles online > against the one installed and refuses to run if its known to be pirated. > Maybe also add in a username and password to login to the game. You would > just have to keep check of all the users email address etc to email them an > updated APK. Just a small thought. > > Steve > -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.

