Scryup analyzes an Amazon product's sales-rank history the moment it starts trending and calls it by day 3 — keeper or fast fade — from the data, not a hunch. Stock the keepers, skip the duds.
Every report also sizes the market for you: estimated units/day, how many sellers are on the listing (and whether they're piling in), the product's own trend track record — and a flag if the spike was just a price cut.
Both surge the same way. The split only shows up later — which is exactly when most sellers have already committed inventory.
Illustrative curves, shaped to the medians we measure across the tens of thousands of US Amazon products we track daily, indexed to each product's own pre-surge rank. Lower = selling better.
When a product starts blowing up, you need to make an immediate decision: stock up, or stay out. 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. And the meter runs while you decide: monthly storage from the day it lands, aged-inventory surcharges from day 181 — and if it's Q4, storage rates that sting from week one.
The hard part isn't spotting what's hot — everyone can see that. And "everyone" includes the twenty other sellers about to jump on the listing and split the buy box. The hard part is knowing what stays hot — and what fades fast. In our data, most duds are back near their old rank within about two weeks, and only about 1 in 3 trends clears our three-week keeper bar. The ones that clear it tend to keep selling for months — but you can't just wait for proof: by the time a trend is obviously real, the listing is crowded, the buy box is split, and your sourcing window has closed. The margin goes to whoever knew at day 3.
No vague hype. Here's precisely what we're talking about, measured across the tens of thousands of US Amazon products we track daily in 21 major categories.
Every trending product becomes a keeper or a dud. Scryup's whole job is to call which — on day 3, before you commit.
Send us one product you're weighing — or name a category you sell in and we'll call its current surges. We run it through our data engine, hand-build the Keeper-or-Dud report — verdict, chart, drivers, and a market snapshot of sales volume and seller crowding — and email it back within 24–48 hours. This is exactly what lands in your inbox.
On high-confidence calls like this one, about 7 in 10 sustain — vs about 1 in 3 of all trends.
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.
A prediction from data analysis, not a guarantee. On high-confidence calls like this one, Scryup is right about 7 in 10 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 data-backed keeper-or-dud call in seconds — as many as you want. No 24–48-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 trends in your categories our data says will last — plus a do-not-chase list — surfaced before the crowd piles in.
Stock the keepers. Skip the duds. Stop getting caught with dead stock. Founding members get the free report now, early access to each piece as it goes live — and 50% off their first year of the paid tool. Claim one of the 50 founding reports →
Other tools either show you a chart and make you guess, or promise "winning products" and never say how often they're 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 hundreds of high-confidence calls held out from training, we're right about 7 in 10 times, against a base rate where only 1 in 3 trends lasts.
And our keepers keep going. Once a high-confidence keeper call confirms, about 8 in 10 are still selling strong two months later — 3 in 4 at three months. And they don't limp along: the typical confirmed keeper holds a plateau near its surge level, selling at least double its old pace for 150+ days. Long enough to source, land, and sell through.
We tell you when we're not sure. We constantly work on ways to improve our model — but we still can't get a read on every trend. When that happens, we say so honestly.
It's a prediction, not a crystal ball. But follow every trend blindly and the deck is stacked against you — only 1 in 3 lasts. With Scryup, you make decisions with the odds on your side.
For maximum accountability, we make our calls in public — one keeper and one dud, every day, posted the day we make them — and we keep score right here: every call graded three weeks later against what the sales rank actually did. Hits and misses both stay on the board.
How to read it: Rank jump is how many times the product's Amazon sales rank improved over its own pre-surge baseline at the moment of the call. High is our confidence tier in the call — the same tier our published accuracy numbers refer to. Every call is graded against the same fixed bar, set before the call is made: three weeks after the surge began, is the product still selling at at least 2× its pre-trend pace AND ranking at a level that puts it among its category's proven sellers? Clears both = a keeper call was right. Fails either = a dud call was right. No judgment calls, no moved goalposts — the bar is identical for every product on this board.
Each call was generated from only the data available on the date shown, then graded 21 days later. The engine's training data ends before any of these calls begin — nothing here is fitted after the fact. Pending calls get graded on schedule, right or wrong.
Send one ASIN you're actually weighing — or name a category you sell in and we'll call its current surges. Within 24–48 hours you get the hand-built report: the Keeper-or-Dud verdict with honest odds, the sales-rank chart with our projection, the two reasons behind the call, and a market snapshot — estimated units/day, seller crowding on the listing, the product's own trend history, and a promo-spike check. Every founding report is built by hand — that's why there are exactly 50. The always-on tool comes next; founding members get it first, and lock in 50% off their first year when paid plans launch — your personal code comes with your report.
Scryup reads amazon.com today. Tell us where you sell and we'll email you the moment we expand there — the most-requested marketplace gets built first.