bopomofo teaches the 37 Bopomofo (Zhuyin) symbols that Taiwan uses to spell Mandarin, so you learn to read without pinyin. Draw each symbol and get stroke-order feedback. Record syllables and get a check on initials, finals, and tones. Train your ear on tones and tone changes. Bobo, the coach, reads your practice stats, picks your next drill, and tells you why. Free and open source (AGPL-3.0).
