How to generate promo codes for android devices?

Hi ,I am looking at ways to share our paid app ( Google play ,Nook) with friends?

I do understand I can share APK download links,but we concern that it can be passed around and downloaded for free way beyond our target.

A.Is there any way I can Generate promo codes for Android Devices?

B.what are my other options?

Thanks in advance [import]uid: 141482 topic_id: 29638 reply_id: 329638[/import]

There are probably many ways of doing it with code. Some quick ideas:

One really simple option were you don’t need any promo codes at all would just to create a specific trial apk for download that have some time limit coded into it (some simple check against system time would do). If they like the app they will buy it when times up.

Or if you want to use promo codes put up an SQL database with the codes in it and make the app (a free version) connect to it to use the code by http and on the server side you would erase that code from the database and thus make it unusable for anyone else. Obviously in that case you need to save something on the android side so you could check if they are running an unlocked app or not (or perhaps even check against the web/sql database were you saved something when they “used” the promo code (save the device id or some similar thing one generates based on the phone it runs on). [import]uid: 53069 topic_id: 29638 reply_id: 118978[/import]

Hello dude, thanks for sharing and please sharing insights. [import]uid: 169750 topic_id: 29638 reply_id: 119874[/import]

Hello dude, thanks for sharing and please sharing insights. [import]uid: 169750 topic_id: 29638 reply_id: 119874[/import]