Hi, I'm Igor.
I've been learning Japanese for a few years. While preparing for the JLPT N4, I spent a lot of time reading — and ran into the same problem over and over: most study materials show furigana on every single kanji.
That makes reading easier, but it also makes you depend on it. I kept looking at the furigana instead of the kanji, so I wasn’t improving at all.
One day in class, we covered the furigana with a piece of paper. Reading became harder — but also more fun. I finally had to pay attention to the kanji.
That’s where the idea for Yomu came from: a reader that hides furigana for kanji you should already know and keeps it only where you still need help.
Everything else grew naturally — importing text from anywhere, scanning pages with the camera, using a fast offline dictionary. But the core stayed the same: a Japanese reader that actually helps you learn.