Unlike general English learning apps, KMF focuses entirely on volume and simulation. 1. The "Real" Test Simulator The platform has a near-1:1 replica of the official ETS interface. If you practice on KMF for a month, walking into a real test center feels like walking into your living room. The fonts, the layout, and the timer behavior are spot on.

For many international students, particularly those from China, "KMF" (which stands for Kaomanfen , or 考满分) is more than just a website—it is a ritual. But for the rest of the world, the platform remains a mystery.

If you have spent any time in the world of Chinese social media or online test-prep forums, you have probably seen the acronym TOEFL KMF pop up.

This is the main draw. KMF aggregates a massive database of past TOEFL questions (often referred to as "机经" or "JJ"). While ETS recycles old tests, practicing on KMF gives you a statistical advantage. You might see a familiar reading passage on test day.