Definitions poor
Nicely organized to help you keep track of the words you know and the ones you don't but the word definitions are basic and without nuance, making it difficult to know how to distinguish the word from synonyms and how to use it in real life.
Word lists excellent, interface suboptimal
Grouping of the words into an "essential" list was great. However, needs to ability to rate words on a graded scale, vice a binary one (either "know it" or "don't know it")
Inaccurate definitions
I'm finding that many of the definitions miss the mark. In addition, some of the sentences used to illustrate the words contain grammatical errors.
Good but could be better
Needs text to speech of each word. Also it needs a third box labeled sort of know it. It only has two boxes- know it and study it. A third box would be helpful
Great app with annoying bug
This is the best GRE vocab app out there. However, when you use the Flash Cards for all 800 words, and thoroughly close the app, and reopen, your Flash Card pile includes only the 300 'essential' words. You then can choose to 'view all words', but this resets your deck, and erases all of your progress :(
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Helps me focus my time ...
Separating the 300 "essential" words from the 800 "high frequency" words is a great idea. I can only work through this list a few minutes at a time so I can focus on the essential words first and come back to the rest when I have more time.