The first video speed controller built specifically for online course students. Smart speed control + AI notes + learning analytics — all working together so you actually finish what you start.
No credit card required. Works on Udemy, Coursera, LinkedIn Learning, Skillshare & more.
85-95% of online courses are never completed.
Not because learners aren't motivated. Because watching at 1x speed turns learning into a second job.
Average MOOC completion rate
Optimal speed — zero comprehension loss (24 studies)
Watch 2x twice > watch 1x once (Murphy et al., 2022)
0.25x to 16x with 12 precision steps. Platform-aware presets — Udemy tutorials, Coursera lectures, and LinkedIn micro-chapters each get their ideal range.
One click captures course audio → structured study notes. Timestamp-linked — click any note to jump to that exact video moment.
Track your real learning efficiency. Effective watch time, speed distribution, weekly trends — and course completion prediction.
Timestamp bookmarks with one click. Tag by course, topic, or priority. Search across everything instantly.
Same controls, same shortcuts, same learning system across all platforms. Your setup follows you everywhere.
All data stays on your device. No tracking, no analytics, no sign-up required. Your learning data is yours alone.
CourseSpeed is built on peer-reviewed research — not marketing claims.
2x speed causes no significant learning loss. Watching a lecture twice at 2x produces better retention than watching once at normal speed (63% vs 55%).
No difference in concentration or long-term memory at 1.5x or 2x speed in medical students — the most demanding learning context.
Join thousands of students who finish more courses in less time.
Add CourseSpeed to Chrome — Free7-day full Pro trial · No credit card · Works instantly