Online course platforms closely track their learners. And things have gotten worse over the past two years.

TL;DR Duolingo reported Q4 2025 revenue of $282.9 million (+35% YoY), closing its first billion-dollar year, breaking estimates again. The stock dropped 22.5% anyway. Again. The company plans to slow down monetization to grow to 100 million DAUs until 2028, by focusing on teaching quality, giving more to free users, and growing non-language courses. Duolingo’s Q4 2025 results confirmed something we highlighted in its 2025 review: growth is slowing. The company crossed a billion dollars in r

Scaler Academy projected $200M in revenue but delivered only a fraction. Class Central’s exclusive analysis reveals another major EdTech deception in India

Here is a guide with the best online courses to learn Software Reverse Engineering (SRE), a valuable tool for malware analysts, security researchers, and forensics investigators.