There are many applications nowadays that can be used in terms of phonics. The problem with HECWIN is that it isn't available anymore. In this case, I would like to recommend you a few alternatives. You can use apps like Ultimate Phonics or PhonicsTutor. They're not free, but I think they'll make a great addition to your business or purpose based on the features offered. Visit both websites to find more information about purchasing methods, compatibility, features, and availability.
