This was such a great app until they got rid of the forums function. I paid for a year long subscription and have been so happy using it until then. Now that I'm at the intermediate level, the questions are getting harder and the app gives you absolutely no feedback other than the correct answer. Many times I've had to go to the forum section to figure out an answer to my question. It was very useful! If the forum function returned, I would rate this app 5 stars.