Greek−English dictionary

I like that this dictionary stores the words for you so that you can review and test yourself on words you look up. I haven't found another dictionary that does that. It has as an effective but short user guide, is offline, it reads the words to you, and responds quickly. I appreciate it being free with the option to pay to turn off the ads. The history and testing feature is what makes this app worth while. Thank- you. I'm deducting one star because 1) It would be helpful to automatically open the user guide when the app first opens. 2) For Greek, having the article when you learn the word is critical so you know what gender the noun is, and tho the part of speech is given the gender of nouns is not, and that is more important to me. 3) the interface is urilitarian, but not but not outstanding that would rate a 5 for me.