Elk is the fastest way to convert currencies on your trips. It automatically picks the right currency for you, does away with cumbersome keypad entry, and makes converting currencies fast and fun. On the iPhone, Elk is a handy and interactive rates table. It picks a suitable starting value, and converts the next ten values to your home currency. Swipe left to increase these values; swipe right to decrease them. Tap on a value for more accuracy. On Apple Watch, you tap, swipe and rotate the Dig...