iPhone users have been left amazed by a hidden feature in the Calculator app that allows them to convert currency on the go, ...

Plus, there are some enticing extras, like being able to rate the service of a place by tapping the icon on the screen ... is more of a tipping app than a tipping calculator app, but it does ...

first open up the updated Calculator app on your iPhone. 2. Secondly, tap the calculator-shaped icon at the bottom left of the screen. 3. Tap either “Basic” or “Scientific”. 4. Toggle ...