For Media Buyers
Every buyer knows the quiet math of "creative testing" in-account: the losers spend real money while the algorithm figures out they're losers. You can't skip live testing — but you can stop entering creative that was never going to survive the first three seconds.
A live test needs roughly $500+ per variant before the numbers mean anything, and the weak variants bill you for days before the dashboard confesses. Multiply by every batch, every month. Screening each cut for about $2.45 before it touches the account doesn't replace the live test — it makes sure the live test is choosing between contenders instead of funding autopsies.
Hook Strength is the pre-spend cousin of hook rate and thumb-stop ratio: the model — trained on fMRI brain-response data — scores the first three seconds and the full curve against 76 top-performing TikTok ads. Which means you can audit it against your own account within a launch or two: score a batch, run it, compare the ranking to your hook rates. If the model earns your trust with your data, it stays; that's the correct bar for a buyer.
Killing a losing ad is easier to defend when the pre-spend score predicted it — and keeping budget on a slow-starter is easier to defend when its attention profile says the creative holds. A number that existed before the spend depoliticizes the call: it's not your taste versus the client's, it's the screen everyone agreed to run. Works on anything entering the account — filmed, designed, or AI-generated.
Fatigue is a scheduling problem: winners die on their own clock, not your production calendar. Screening keeps a ranked bench ready — when frequency creeps and CTR slides, the replacement is already scored and queued instead of "in edit." Pair with a refresh cadence and the account never runs on fumes.
$49/month for 20 analyses, packs from $45, results in minutes, up to 8 free credits to start — no card. For agency volume, the Agency plan runs 250 analyses/month. Score this week's batch before the media plan locks and see whether the ranking matches your instincts; disagreement either way is information you didn't have.
Up to 8 free credits, no credit card — rank the batch before it spends.
Test Your Ads Freeor read a live sample report first — no signup
The platform's test isn't free — it's billed as media. Reaching significance on a variant typically costs $500+ of spend, and the losing variants bill you the whole time. A $2.45 attention screen in front of the account means learning budget goes to questions only spend can answer — audiences, offers, landing pages — instead of rediscovering that a hook was weak.
Same territory, opposite timing. Hook rate and thumb-stop ratio are post-spend measurements of the first seconds; Hook Strength is the pre-spend prediction of them. Buyers who watch those account metrics can sanity-check the model against their own data within a couple of launches.
No, and the methodology says so plainly: the model predicts attention and engagement, not conversions. Attention is the gate — an ad nobody watches can't convert — but offer, audience, price, and landing page still decide what happens after the watch. Use the score to screen out gate-failures, not to skip live validation.