How does handwriting recognition apps for the iOS

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Is there an handwriting recognition library for IOS?

I'm building an app for the iPad that can recognize handwriting and I was wandering if there is library/framework for doing that?

Does someone knows how does the other apps do that? do they use OCR or Gesture recognition?

I know that there are many questions here about that subject but I haven't came across a satisfying answer.

Thanks.

Answer 1

I've tested a lot of HWR/OCR libs.

Here are great handwriting-recognition libs: http://www.hanvon.com/en/products/index.html http://www.phatware.com/index.php?q=product/details/developer/writepadsdk But they are closed-source.

Here is simple opensource one: http://risujin.org/cellwriter/

As for me, best of OCR engines is Tesseract; it recognizes text better then even ABBYY.