Some major flaws

I like the calendar feature, but there should be more than just three markets supported. At least add Sydney, HK and Frankfurt.
Also, the bell does not seem to work in background.
The main problem, though, is that this app gives the wrong opening times after the markets close for the weekend. For example, on a Friday at 6 PM, it will tell you that the NYSE will open in 13 hours and 30 minutes (Saturday morning). Then on Saturday morning it will start showing the correct opening time on Monday.

LoLaMC about iMarkets