Scryup reads an Amazon product's sales-rank history the moment it starts surging and tells you whether demand will hold for the next three weeks — so you stock the keepers and skip the fads.
Both surge the same way. The split only shows up later — which is exactly when most sellers have already committed inventory.
Median paths of 45,000+ analyzed surges, indexed to each product's own pre-surge rank. Lower = selling better.
When a product starts blowing up, you have days to decide whether to buy. Get it right and you ride the wave. Get it wrong and you're sitting on dead stock, marking it down, and paying to store it. In 2026 that mistake costs more than ever: Amazon's aged-inventory surcharge now starts at day 181 — months sooner than before.
The hard part isn't spotting what's hot — everyone can see that. The hard part is knowing what stays hot, and when the rest die. In our data, half of all surges are gone within about two weeks — but the ones still standing at three weeks tend to keep selling for months. And you can't just wait and watch: by the time it's obvious, your sourcing window has closed.
No vague hype. Here's precisely what we're talking about, measured across 45,000+ real Amazon surges.
Every surging product becomes one or the other. Scryup's whole job is to call which — on day 3, before you commit.
Send us one product you're weighing. We hand-build its Keeper-or-Dud report and email it back. This is exactly what lands in your inbox.
Among the top ~10% of surges, about 3 in 5 sustain.
We expect this product's demand to hold strong over the coming weeks.
Sales rank, inverted so higher = selling better. Shaded = Scryup projection.
Sales rank improved about 18× off its baseline in a matter of days — far steeper than a typical short-lived bump.
It ranked well below the usual level for Home & Kitchen before the surge — breakouts from obscurity tend to last; bumps on already-popular items tend to revert.
Data estimate, not a guarantee. On high-confidence calls like this one, Scryup is right about 3 of 5 times (base rate: ~1 in 3). Not sourcing advice.
That report is a taste of the engine. Scryup — the tool we're building — never stops working for you.
Paste any product, get the keeper-or-dud call in seconds — as many as you want. No 24-hour wait, no squinting at Keepa charts.
Track the products you hold or have your eye on. We ping you the moment one surges, and warn you when a winner starts to fade — while there's still time to sell off ahead of the storage fees.
The products surging in your categories that will last — plus a do-not-chase list — surfaced before the crowd piles in.
Stock the winners. Skip the fads. Stop getting caught with dead stock. Founding members get the free report now — and early access to each piece as it goes live.
Every other tool either shows you a chart and makes you guess, or promises "winning products" and never says how often it's wrong. We do the opposite.
We make a real forward call — sustain or fade, over a defined window — not a vague score.
We tested it on data the model had never seen. On our highest-confidence calls, we're right about 3 out of 5 times — against a base rate where only 1 in 3 surges lasts. Better odds, honestly stated.
We tell you when we're not sure. Borderline is a valid answer. So is "this isn't actually a trend."
It's an estimate, not a crystal ball. But it turns a coin flip into a decision with the odds on your side.
Your free, hand-built sample of the engine — on one product you send us. The always-on tool comes next; founding members get it first.