Why Kollego exists

TestAS and the Studienkolleg Aufnahmeprüfung are the gatekeeper exams standing between thousands of international students and a MINT degree in Germany, and the prep material for them is still mostly static PDFs and scanned past papers.

Kollego is built on the idea that the material itself should be interactive: an answer you manipulate on screen, not one you read about. Every practice item is generated by a real parametric engine, not pulled from a fixed question bank, so you never run out of fresh practice, and never memorize an answer instead of learning the underlying skill.

The progress estimate you see is shown as a labelled practice range, not a single confident number. It's an honest estimate, not an official prediction. We'd rather undersell certainty than oversell it.

Prep+ is a one-time pass, not a subscription: exam prep has a finish line, so you pay for the months you need and nothing renews behind your back.

Kollego is an independent product, not affiliated with g.a.s.t., TestDaF-Institut, or any Studienkolleg.