iOS/Android/Desktop: Default calculator apps suck. They work like a traditional handheld calculator, which only displays one value at a time and can only do basic maths. If you want to do anything more than calculate a sales discount, you’re better off with these free and cheap calculator apps.
iOS: We already know that for various users, iOS 11.1 makes media playback stutter, breaks audio control on the lock screen, and autocorrects the word “I” to an unrecognisable character. But there’s more! It also breaks the Calculator app.
How many kilojoules are in your usual night at the bar? Doing maths with kilojoules is probably not part of your fun night out. Instead, here’s a calculator that will give you a good estimate before (or after) the fact.