Hiragana Grid - Option to put the hiragana reading in the grid rather than the actual kanji compound. NB this hiragana version is always 5 x 5, in order to fit all the words in the grid. The kanji compound is shown as the first cue by default.
Meaning Hint First - instead of the hiragana reading hint being shown first ( or if set to 'Hiragana Grid' mode, the kanji hint first), the English meaning will be shown.
5*5 Kanji Grid - Option of 4 x 4 or 5 x 5 grids for the 'kanji grid' mode.
Kanji Grade Levels - Choose the 'kyoiku' kanji level, 1006 kanji from grades 1 to 6 (covers almost all kanji from JLPT levels N5 to N2)
Reset all words - You can reset all the words in the current level to a specified color. eg You can reset all the words back to yellow after finishing all the words to start again; or if you just want to practice certain words from a level, you can rate all the words green, then choose just the kanji you want to practice from the main grid and rate them down to yellow (or lower).