[GraemeJ]

The DRM that Amazon inserts into the app requires that you have internet connectivity every so often to validate your purchase.....I don't have the power to offer refunds).

Of course, they are not really interested in 'validating your purchase' - they already have your money and couldn't give a toss about checking if the purchaser is still using it. What they are really worried about is someone else copying the paid-for version and using it for free. Considering how little it costs, one has to wonder at the mind set that thinks this is worth the time and effort .

Considering the intended use of this app, one has to worry about being in the middle of a gig, with no local internet access, when Amazon decide they want to check it out?

I think this sort of thing should really be up to the developer and they ought to give him some sort of input as to what and when. I appreciate there is little Mike can do with the current release, perhaps he could withhold the next release from Amazon?