I don't get it.
The whole idea of a punting phone is to remain secret and anonymous. A trip to Tesco and get a £9 Nokia, PAYG SIM for £1 and a £10 quid by voucher, all paid in cash and don't admit to having a clubcard. £20, job done, not much to it.
20 quid or a potential world of shit, no brainer.
So why would anyone want apps to turn their smartphone into a punting phone ? Far too dangerous and far better to know that if anyone gets suspicious you can hand your phone over and say take a look, knowing full well there is nothing incriminating on it. Smart phones are too bloody smart for my liking.
Surely your usual phone and punting phone should be totally separate.