+1

Completely agree and support this proposal.
- Would free developers from gunkwork and let them focus on features.
- More usable for users by reducing clutter on AM and device.
- Another advantage is that it prevents the situation where the user
forgets to remove the free trial product after purchasing the full
product, and if you have background processes or phonelisteners, they
collide. Worse still, some users delete the paid product and wonder
why they are still getting purchase reminders.

I would add to the proposal, one more strong like-to-have:

- Dynamic licensing: Upon purchase, AM (optionally) makes a call to a
URL provided by the developer, passing an IMEI# or such from the
phone. Developer returns license string. AM conveys this to the user,
who has to enter it to unlock the full version. This exchange between
AM and developer's site is secured either by source-IP restrictions or
other password known only to developer and AM.

BTW, this is how BlackBerry App World already works. They have Try &
Buy AND multiple licensing models to choose from like None, Single,
Pool & Dynamic.


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