Quechua is spoken by about 8 million people. Peru, Bolivia and Ecuador censuses added together. Quechua is some 45 varieties, several of which do not understand each other, so one total is a political choice as much as a linguistic one.
On our measured language map, its closest relatives are Aymara, Greenlandic and Georgian. If you speak one of those, much of the vocabulary will feel familiar from day one.
Structurally, objects usually come before their verbs; words are built from many smaller pieces, which our course teaches piece by piece.
Every lesson is built from 2,000 real Quechua sentences, aligned with their translations word by word and piece by piece, so you always see how the sentence actually works instead of memorizing flashcards. The grammar is discovered from the sentences themselves, 1,228 patterns so far, and a spaced-repetition quiz teaches it in the order that unlocks the most of the language first. Our measured estimate for reaching conversational level from English is about 1,468 hours of study. Read how it works.
Most apps only teach Quechua through English, if they teach it at all. These starting languages already have a built course, and any other published language can be paired on request:
Speaker figures follow Ethnologue and national censuses, rounded; the difficulty estimate is calibrated against U.S. Foreign Service Institute data.