The second your VSL loses them
A retention curve for every video. Find the cliff, watch that second, and cut it.

From curve to cut
A number for every second of the video.
Second by second
Not an average. A number for every second of the video.
Find the cliff
A gentle slope is normal. A cliff means something specific happened, and you can go and watch it.
Compare variants
Put two retention curves side by side and see which edit held people.
Split the curve by device
Mobile, desktop and tablet on one chart, each with its viewer count.

See which chapter loses them
Every chapter gets a row: how many viewers reached it, and how many left before the next one. The two steepest drops are marked, so you know where to cut first. The chapters are read from your transcript. No setup.

Averages hide where viewers leave
A 41% average looks the same whether half watched most of it or everyone left at once. The curve shows which.
The whole player, on every plan
Questions about Retention Curves
What is a retention curve?
A number for every second of the video showing how many viewers are still watching, instead of a single average.
Why not just use average watch time?
A 41% average is the same number whether half your viewers watched most of it or everyone drifted off at the same moment. The curve tells you which, and where.
How do I read a cliff?
A gentle slope is normal. A cliff means something specific happened at that second, and you can go and watch it.
Can I compare two edits?
Yes. Put two retention curves side by side to see which edit held people, then split test the new edit on real orders.