A few weeks ago a message appeared on my Zoombet app saying that there was a very real possibility of them having to shutdown permenantly as they were running at a loss. I, like many others, think that this is the best Betfair app around and I have tried them all including the official Betfair app.
One of its best features is the way the odds rapidly update, even on a poor 2g signal without having to press a refresh button (its actually better than the website itself!). Another great feature is the trade out function where it automatically calculates the stake required to trade out of a bet.
The guys at Zoombet have hads lots of support and donations from their followers for which they are very grateful but unless they find a long term solution they will be closing down the service at some point.
I think the best solution would be for Betfair themselves to provide the financial backing or even make Zoombet the official Betfair app. Can all who agree with me please voice their support and hopefully Betfair will take notice.