Very good app.
Ive been running this app on both my iPad Air and iPhone 4s for about a year. It has always been stabile. Only 4 stars because, Id like to see better charting. (i.e. candle stick charts, which I prefer.) This app is great for keeping up on Bitcoin news. The portfolio feature helps you track your bitcoin cost basis.
July-2015 not much new to add from the above comments. Still use the app and it still has room for improvement. It remains a solid 4 star app IMHO.
July-2016 app update. Wow, the developer added 3 hr. and 12 hr. chart intervals. App still runs solid as a rock, with no crashes in iPhone 6 and iPad Air. In recognition of the outstanding code written here, I upgraded to the paid version. Still, many more avenues could be explored by the developer. Price alerts are great, but most traders know volume is equally important. It would be nice to set a time interval, i.e. Say a one hour time interval on a given exchange and set a trigger for the number of coins traded. Though Im sure from a coding standpoint this could be quite daunting.
Another avenue of development could be tighter integration with the major wallet vendors and exchanges. My rating stays at 4 stars.
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Bitcoin Ticker, v1.8.16