They are different. Detexify is really useful, since it matches against a vry large symbol set, and is trained against a pretty large sample set. For symbol r

They are different. Detexify is really useful, since it matches against a vry large symbol set, and is trained against a pretty large sample set. For symbol recognition, this app is pretty crude. It's still cool, but I struggle to think of a use case for it. It's too unreliable to be of use for scanning maths notes.