ERReader: Learn Russian

Open an English book and some of the words are already Russian. How many is up to you: the ring turns from 0 to 100%. At 10% every tenth word is Russian. It still reads like an ordinary book, but every paragraph hands you a new Russian word in a context where the meaning is obvious without a dictionary. Your brain fills in the rest — that is how vocabulary sticks. If it does not, tap the word to see what it replaced. The alphabet is a setting, not a wall. Russian words can be shown in Latin letters (krovat'), in Cyrillic (кровать), or both at once — switch whenever you are ready, mid-page, without losing your place. Learned a word? Remove it, and the freed percent goes to the next one. — Your own books: EPUB, FB2, TXT — Fully offline: the dictionary lives inside the app — Word order never reshuffles when you change the percentage — Proper nouns and ambiguous words are never replaced — Themes, typefaces, size, line spacing — No ads, no data collection Three days free. Then ten pages a day free, or a one-time purchase — not a subscription.