Well the good news is that if you wanted that kind of functionality but on your phone, you will be pleased to learn that Ginger has arrived on iOS devices as a keyboard (the Android version has been out for a while). With iOS 8, Apple finally allowed users to install third-party keyboard apps and while we have our usual suspects in the form of SwiftKey and Fleksy, Ginger is another option you could consider.
Now the keyboard isn’t perfect and won’t catch every single mistake you make, at least according to Engadget who tried it out for themselves, but it should be good enough to catch most mistakes that you make. The keyboard itself is a free download for those of you who are interested in improving your English or just want a quick and easy way to correct common mistakes, you can head on over to the iTunes App Store or Google Play for the free download.