Version 1.0, what do you expect?
Scheduler: time slider works intermittently--frequently freezing; baseline time seems to go in 1/2 hour jumps, but other times appear to be local time--usually. Selecting other time zones seems to cause frequent crashes.
Currency Rates: Seems fine.
Converter: Strongly recommend moving keyboard away from the mode selector. As is, it is far too easy to select another mode when trying to hit one of the lower keys (0, ., +/-). Frequent crashes when selecting from conversion menu. Personally, I would make the "slot machine" selector wheels smaller and the keyboard and resulting computation (especially) larger.
Bottom line: With a bit more work, it will be a very useful app--but the first go has a LOT of bugs to be worked out.