This is out of sync with the 6th edition of the RTK book, which is the latest edition. Also, cannot copy characters and paste into other dictionaries, which would be good for confirming some of the key words (which are arguably not exact in the Heisig Method). Also, what study algorithm is used? Seems just random. Using the Lietner algorithm could offer a more effective study regime. Overall a great app, besides the above minor quips :-)