Hey Tim.

You're correct that validating purchase with the market is a key piece
of our solution.  Figuring out how exactly to do that using Google's
binary market protocol in an efficient way (try doing everything that
AAL does in a 35 KB library) was a fairly significant dev effort.
What's more, balancing license generation, market API security, cross-
Android version compatibility, customization, etc., and you've got a
nice little chunk of work that we put into this solution.

As for pricing, we'll see what the market will support.  In our own
single app Screebl, we "lose" about $100/day in revenue to pirated
apps, so $50 seems cheap.   I know that not all of that $100 will
translate into sales, but some percentage will.  My point is it
shouldn't take long for AAL to pay for itself.

Dave

On May 5, 1:23 pm, strazzere <[email protected]> wrote:
> Looking at your documentation, I'm assuming your making a call to the
> market requesting the state of the application -- if I'm wrong, then
> just disregard this information. If I'm right, I guess my only
> question is why are you charging so much information for such a
> simplistic method?
>
> Don't get me wrong - that method would probably be the best one I've
> seen yet on the market, but that's still a nice chunk of money to
> charge for it.
>
> -Tim
>
> On May 4, 5:20 pm, dadical <[email protected]> wrote:
>
>
>
> > I've spent the last few weeks developing a new tool to stoppiracyof
> > my paid apps on the Android Market.  In a nutshell, licensing is tied
> > directly to purchase verification.  There is no license server to
> > manage, no key for the user to enter.  User experience is basically
> > uninterrupted from normal application purchase.
>
> > I'm excited about this, as my paid apps are now reachingpiracyrates
> > as high as 90% on some days,with the average somewhere around 75%.
> > For pirated apps, purchase verification (and subsequently licensing)
> > will fail after a certain number of attempts, and pirates will be left
> > with anything from a "buy me" nag, to a disabled app (behavior is
> > configurable).
>
> > Android Market is the only supported purchase validation target so
> > far.  Others will be forthcoming if demand warrants.
>
> > This isn't a perfect solution (I have yet to find a perfect licensing
> > solution), but I feel it is the best balance of security, features,
> > and workflow that I've seen to date.
>
> > You can find a write up, download, and purchasing information 
> > here:http://keyeslabs.com/joomla/index.php/projects/auto-app-licensing
>
> > I'll be looking forward to the comments, suggestions, and death
> > threats.
>
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