Pick a video. Tap the button. Post the winner.
ReelCut cuts your TikTok 6 ways, scores all 7 versions on a brain-response model, and crowns the cut that will actually stop the scroll. No editor, no timeline. You post the winner.
Not on iPhone? Run the same tournament in your browser →
Built for people whose videos are their storefront
When every post is an ad, guessing wrong costs real money.
TikTok Shop sellers
Every video has to sell. Find out which cut holds viewers to the product before you post it.
Creators posting daily
You can't afford a dead video. Test the hook in ten minutes instead of finding out in the analytics tomorrow.
Spark Ads and boosts
Get the creative tested BEFORE the spend. A boosted loser is the most expensive kind.
UGC creators
Prove your clips hold attention. Send the client the winning cut and the receipts.
How the magic works
Tap the button
Pick any video from your camera roll. Vertical works best, 60 seconds or less.
We cut it 6 ways
Different hooks, openings and lengths, generated automatically. No exporting.
All 7 get scored
Your original included. TRIBE predicts where attention locks in and where it dies.
Close the app
A push notification crowns the winner in about 10–20 minutes.
Post the winner
Straight to TikTok or Reels from the share sheet. Receipts included.
What you get
- ✓ A ranked scoreboard of all 7 cuts, so you see exactly where your original placed.
- ✓ Hook-by-hook engagement scores showing which opening actually holds viewers.
- ✓ The winning cut, ready to post. Zero editing skills required.
- ✓ A public receipts link you can send to a client or a brand.
It will tell you when you were already right
When we ran our own ad, the original beat every re-cut. ReelCut said so. Tools that always claim to improve your video are selling edits, not answers. If your cut wins, post it as-is.
See those receipts →Your first tournament is free
Create an account in the app and run one full tournament on us: 6 new cuts, 7 scores, 1 winner. After that, packs of 5 or 15 tournaments are sold in-app at the same prices as the web packs. Your hook decides whether anyone ever sees your product. One winning video pays for a lot of tournaments.
Frequently asked questions
Is ReelCut free?
Your first tournament is free when you create an account. After that, tournament packs (5 or 15 tournaments) are sold as in-app purchases at the same prices as the web packs. One tournament = 6 new cuts, 7 scores, 1 winner.
Do I need an iPhone?
The ReelCut app is iPhone-only (iOS 16 or later). On Android or desktop, the exact same tournament runs in the browser at pretestads.com/tournament with the same account and credits.
How long does a tournament take?
Usually 10 to 20 minutes. You can close the app — ReelCut sends a push notification the moment the winner is crowned.
What scores the cuts?
TRIBE, a brain-response model trained on published fMRI research. It predicts second by second where viewer attention locks in and where it dies, and ranks every cut against 76 top-performing TikTok Creative Center ads. It measures attention, not guaranteed views or sales.
Is my video kept private?
Yes. Your upload and the generated cuts are stored privately under your account and are never published. You keep every file, and you decide what to post.
Does ReelCut use the same account as PreTestAds?
Yes. Log in with your PreTestAds email and password, or create an account in the app. Credits, tournaments and receipts are shared between the app and the website.
Keep reading
- How to Repurpose One Video Into Multiple Ad Cuts
- Runway Ad Videos: Test AI Video Ads Before You Spend
- Score Your Ad with Claude, Step by Step (With Screenshots)
- Seasonal Ad Creative Planning: A Q4 and BFCM Screening Workflow
- Seedance Ad Videos: Test ByteDance AI Video Ads Before You Spend
- How to Sell UGC on Fiverr: Stand Out With Proof, Not Price Cuts
Browse every guide on the guides index.