Having been down this road with a few apps, I'd recommend either 3 or 5. Keeping trial IDs on your server isn't THAT hard, and I'd say don't worry too much about the edge cases, like the user resetting their phone to generate a new ANDROID_ID. Unless your app is far more expensive than most, very few pirates will go to that trouble.
As for #5, the lite/pro model is well established and understood by users. And as I've argued elsewhere, 2 apps gives you 2 chances at visibility. String -- 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
