Blindspot

Blindspot is a language-learning app built around real practice instead of traditional lessons you write texts or chat with AI characters, and Blindspot automatically finds your mistakes, explains the grammar behind them, and saves words you don't know over time, it builds a personalized vocabulary and grammar profile based on your actual weak spots you can practice grammar separately, review vocabulary with flashcards and spaced repetition, and focus on what you actually need to improve there's also a Chrome extension that lets you save unfamiliar words and check your writing directly on any website the idea is simple: writing, conversation practice, vocabulary, and grammar in one system that learns from your mistakes and helps you decide what to practice next