I use apostrophe's all the time; see I just used one. But this is a key that's not visible on the
integrated virtual keyboard so it's a huge hassle typing them.
Press and hold the comma key. A pop-up variation appears with an apostrophe, and it even
appears highlighted, which means you don't have to move your finger to select it. Simply tap,
hold for a moment, then release to create the apostrophe.