[nagrom]

If I'd paid $2.99, I simply would not pay for anything else from Alphonso Labs. I'd just wait until they gave it away free - that is a shame, because that way any app is unlikely to be successful enough to be given away free.

If they give it away free, then I would expect that they do something for previous purchasers. If they don't, they risk building a lot of bad will from early adopters that could kill their next venture.

Then again, one could argue that you paid that premium for early use of the app, and for $2.99 it's not worth holding a grudge and refusing to purchase their next product.