Best OCR Engine That Works With Swift

Hey guys I was wondering if anyone has any experience with OCR engines that work with swift. I was wanting to create an iOS app with OCR capabilities but I wasn't to sure what is the best and most accurate one with a wide array of text styles (text, printed, written, etc.).

I've looked at ones like Tesseract, ABBYY and GOCR, but I'm not to sure which is better and compatible with Swift

Any ideas orsuggestions would be greatly appreciated.

Thanks