Grade Your Hook — Free
Find out if your first line will stop the scroll. Scored on curiosity gap, emotional salience, and cognitive accessibility.
Want to see your hook's brain activation in real video?
Get a second-by-second neural timeline and 3D brain heatmap.
FAQ
- What is a hook score?
- A hook score rates how effectively the first line of your video script or caption captures attention. We score on three dimensions: curiosity gap, emotional salience, and cognitive accessibility—each proven by neuroscience research to predict viewer retention in the first 3 seconds.
- What makes a good TikTok hook?
- The best TikTok hooks create an information gap (the viewer must keep watching to find out), trigger an emotional response, and are instantly understandable with zero cognitive effort. A score above 70 indicates strong performance. Scores above 85 are rare and typically indicate viral potential.
- How is this different from testing my actual video?
- The hook grader analyzes your script or caption text. For a full brain engagement analysis—second-by-second neural activation timeline and 3D brain heatmap—use VidCognition's full video analysis.
- Is the hook grader free?
- Yes, completely free with no account required. You can analyze up to 5 hooks per hour.
Looking for a full comparison? See our ranked roundup of the 7 best hook analyzer tools →