Script Analysis
Most TikTok videos lose viewers in the first 2 seconds — not because the product is bad, but because the payoff arrives too late. The algorithm rewards videos where viewers stay past the 3-second mark, which means your hook, your product mention, and your promise all need to front-load before most creators think to put them. TikTok data shows that videos that surface the key message in the first 3 seconds achieve 63% higher completion rates. Paste your script and find out exactly where your hook timing breaks — and get a reordered opening that fixes it.
Paste your script
Enter the spoken or on-screen text of your video, line by line. Include the opening caption, spoken hook, product reveal moment, and CTA.
The tool maps timing to each line
Each line is estimated against average TikTok speaking pace (~2.5 words/second) to find when your product appears, when the key benefit lands, and when the CTA hits.
Get a timing diagnosis
You see exactly which second each element appears — and whether they arrive within TikTok's critical windows: hook by 1.5s, product by 2s, benefit by 5s, CTA in final 3s.
Get a reordered opening
If timing is off, the tool generates a restructured version of your opening that front-loads the hook and product reveal without changing your core message.
Generic AI tools like ChatGPT use training data that can be 6–18 months old. Kalibratr pulls from verified, regularly updated sources specific to TikTok Shop.
TikTok 3-second retention window
Published 2024TikTok's own creator research shows videos that surface their key message in the first 3 seconds achieve 63% higher completion rates. This is the benchmark the tool scores against.
TikTok Shop conversion timing data
Built-inProduct reveal timing benchmarks are calibrated for TikTok Shop content specifically — direct-response ecommerce videos have different optimal timing than entertainment or brand content.
Why this beats asking ChatGPT
ChatGPT can discuss hook timing in theory. It cannot take your actual script and tell you that your product mention arrives at second 4.2 — 2 seconds past the window where high-intent TikTok Shop viewers typically scroll away. Kalibratr maps your script word-by-word to a timeline and identifies the exact frame where each element lands, then restructures the opening to fix it. That is a specific, actionable output. A chat interface cannot produce it.
Why does hook timing matter on TikTok?
TikTok's algorithm uses 3-second retention as one of its primary distribution signals. Videos that lose viewers before the 3-second mark are rapidly deprioritised in the For You feed. For TikTok Shop content specifically, high-intent buyers — the viewers most likely to purchase — scroll past videos that take more than 2 seconds to establish what the product is and why it matters.
When should the product appear in a TikTok Shop video?
Within the first 2 seconds for direct-response content. The product should appear in use, mid-demo, or showing a visible result — not as a static packaging shot. For problem-first hooks, the product can appear at 3–4 seconds as the resolution to the stated problem, but should not be delayed beyond that.
How long should a TikTok hook be?
8–15 words for a spoken hook, or a single readable line for on-screen text. The hook must land within the first 1.5 seconds — anything longer delays the core message past TikTok's critical scroll-stop window. A common mistake is writing a hook that requires context before it lands.
What is the optimal TikTok video structure for Shop content?
Hook (0–1.5s) → Product visible (0–2s) → Problem named or benefit shown (2–5s) → Demo or proof (5–20s) → CTA (final 3s). This structure is not mandatory, but videos that deviate significantly — particularly by delaying the product reveal — consistently underperform against this template in TikTok Shop analytics.
Is this tool free?
Yes — the Hook Timing Analyzer is completely free with no account required.