I think more than enough Preev alternatives have been collected in this thread, already
However, OP has not closed the thread yet so I take the bravery to release the full list of alternatives that I learned from you guys.
Preev alternatives:- Preev (dot) net
- Google ( just type into search )
- Bitstamp ( they have an API for devs )
- bitcoinaverage (dot) com
- CoinBase
- youmeanbtc (dot) com
- coimarketcap (dot) com
- coincap (dot) io
Are there any apps on the Windows phone platform that will do BTC to USD conversions on the fly?
If not, it's about time that someone made one.
Is there any result from anyone's side who offered to help?
I could consider creating an unsigned one when an amount of people are interested. It would be a good challenge since I do not usually code for Windows Phone, but I think, I could do it in C# / XAML.