Watch your audience's brain react to every line. Before they ever press play.
Built on neural engagement research from brain imaging labs. Paste a URL and see exactly where your audience's attention locks in, fractures, and bleeds out — before a single viewer ever clicks play.
Score a YouTube video
Start with the URL. If transcript extraction fails, BrainScore will ask for the script and keep going.
Upload a YouTube Analytics screenshot to compare predicted vs actual drop-offs.
Make sure this retention graph is from the same video as the URL above. Mismatched graphs will produce inaccurate results.
One free neural diagnosis per session. Sign up free to unlock every rewrite.
What you get
A neural engagement score that predicts how your audience's brain responds in the first 15 seconds — the window where most videos are already lost.
A predicted attention map — second by second, where neural engagement rises, holds, and fractures, with exact quotes from your transcript at every inflection point.
Ranked attention fractures — the exact lines triggering viewer exit, with neural rewrites that reverse the damage. Anonymous users see the problems. Sign up free to unlock what to do about them.
Why this feels different
Most tools grade your thumbnail. BrainScore maps your script against the same neural signals — curiosity gaps, dopamine triggers, cognitive overload — that neuroscientists measure in brain imaging studies. What was locked in research papers is now a URL field.