Appeal to developers :)
So, first of all I'd really like to express my gratitude for such a genuine app that combines social platform with learning tool and is completely free, with no ads (!!!), which is truly unique. However, there's one thing that definitely could be improved - I'm talking about blank spaces for words designed to check acquired knowledge. Well, to work effectively their size should be initially the same, otherwise they may be intuitively fulfilled by anyone, right? Maybe it's a detail, but IMHO worth fixing.