Lingua Fortis

Lingua Fortis is built on two pillars: focus on the most frequently used words and patterns, and repeat them until they're reflexive. A small number of words and patterns make up the vast majority of any language. We analyzed millions of real sentences to identify exactly which ones they are — and the results are counterintuitive. Most courses prioritize vocabulary that feels important but is statistically rare. We prioritize what native speakers actually use most. Then we drill it. Fluency isn't knowledge about a language — it's muscle memory. Our spaced repetition system trains you to produce high-frequency words, patterns, and multi-word expressions without thinking, the way native speakers do. Every feature adapts to your level, making Lingua Fortis equally effective whether you're starting from zero or breaking through an advanced plateau. WHAT'S INSIDE ★ Standard Courses — Frequency-ranked vocabulary and patterns with spaced repetition. Built from analysis of up to five million real sentences per language. ★ Custom Courses — Import your own content into the same spaced repetition engine. ★ Data Center — Interactive frequency dictionaries. Every word ranked by real-world usage, with contextual practice sentences calibrated to your mastery level. ★ AI Language Tutor — Grammar lessons, scenarios, sentence practice, and freestyle conversation. ★ High-Context Translator — Multiple translation options with nuance explanations. Add any result to your courses for practice. A GYM, NOT A CLASS This is self-directed learning. You decide what to study and where to build confidence. Structured courses exist for beginners, but beyond that — you're in control. 10 LANGUAGES Danish, Dutch, English, French, German, Italian, Norwegian, Polish, Portuguese, and Spanish.