RussianGuru
Learn and practice Russian grammar.
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With RussianGuru you can master the Russian cases by quizzing yourself on accusative, dative, genitive, prepositional, and instrumental cases.
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With RussianGuru you can master the Russian cases by quizzing yourself on accusative, dative, genitive, prepositional, and instrumental cases.
By default, EyeTwenty is set to 20-20-20 rule, which suggests that after every 20 minutes, you should take a break for at least 20 seconds.
Starting from v2.0.0 you can extend the default 20-20-20 rule, and set your own, custom break interval, break duration and message which suits you most!
