[FuzzyDunlop]

As nice as it's presented, I can't imagine going on a night out with my mates and spending more time keeping an app on my phone up to date. I'd be too busy getting drunk and enjoying myself to be arsed about what drinks I had and how much they cost.

I'd say it was a solution in search of a problem. And the better alternative, I would say, is to not share your tab if you're a bit of a penny pincher.