Yes, we'll be using the latest Apple technologies to build the app to adjust to current (and future) screen sizes on the fly. That's part of the reason you see a fairly simple design. We're thinking ahead to when the content has to respond to both small and large size screens.
Our current thinking is that the first three levels will all be unlocked and free—hiragana, katakana and Grade 1 kanji. Subsequent levels will be unlockable based on certain achievements, or via an in-app purchase for .99 cents. The full jouyou kanji can be fully unlocked for about $7. Games will be under a similar model. They will start out free and levels will be able to be unlocked either by achievement or in-app purchase.
Yes, we see kanji as finite and the combinations and sets as infinite. So we imagine that we can curate sets for popular textbooks, cultural subjects, special events—like a set for Genki I & II, or a set of all Sushi vocabulary, or a special set for the World Cup.
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