Rating monitoringFree forever
Catch it at 4.3, not at 3.9.
An Amazon rating drop alert tells you the same day your star rating crosses a line you set. Watch any ASIN, free, on WhatsApp and email.
Check a listing, then set the alert on itFree, no account needed.
- ✓ Free forever
- ✓ No credit card
- ✓ No Amazon login to check
- ✓ 20+ marketplaces
Detect. Tell.
The rating moves weeks before the reviews explain why.
🔔 Rating drop — Norvale Gooseneck Kettle
Star rating 4.4 → 4.2
1,284 reviews · US · checked 9:00 AM
Rating drop — Norvale Gooseneck Kettle
| Metric | Previous | Current |
|---|---|---|
| Star rating | 4.4 | 4.2 ▼ |
What people actually use it for
A bad batch reaching customers
The rating moves first. The one-star reviews explaining why arrive two weeks later.
Star rating drops below 4.3
After a packaging or supplier change
Put a tight rule on for the first sixty days after any change to what ships in the box.
Star rating drops more than 0.1
A variation merge gone wrong
Merged variations pull in reviews from other products, and the rating can move sharply overnight for reasons unrelated to your item.
Star rating changes more than 0.2 either way
A rival rating slipping
A competitor whose rating is falling is one whose keywords are worth bidding harder on this month.
Competitor ASIN rating drops below 4.0
Alerts fire on price, rating and search position. Every check also shows the product image, best-seller rank, review count, buy-box seller and stock.
Free forever. Not a trial.
No credit card, no expiry date, and no counting down to an upsell. Checking a listing needs no account at all, and a free account keeps watching it for as long as you want it watched.
What a free account gets
- Unlimited listing checks once your Amazon account is connected
- Up to 10 tracked keywords or ASINs on a free account
- Price, star rating and search position alerts
- Email and WhatsApp delivery, to as many teammates as you like
- Checks up to four times a day
- Every marketplace we support, on every plan
What you will never be asked for
- No credit card, at signup or ever
- No 14-day countdown
- No feature that switches off later
- No per-alert or per-check charge
The limits, so you are not surprised by them
- Without an account
- 5 checks per session
- Free account
- 10 tracked keywords or ASINs
- Amazon account connected
- Unlimited checks
Why it is free
SellerMate is an Amazon ads automation platform, and that is the part people pay for. The tracker is free because a seller who finds out the same day their position slipped is a seller who eventually wants the bid changed automatically — and because we would rather be the tool you already have than the one you evaluate. Nothing here is funded by selling your data, and there is nothing to sell: every check reads public pages.
Why this one
It is the earliest signal you have
Ratings move before review counts, before conversion, and long before the sales report.
A threshold you choose
The number a category stops converting under is not the same everywhere, so you set it rather than us.
Review count comes with it
Every check stores the count too, so you can tell new one-stars apart from older positives dropping off.
Set one alert. That is the whole job.
Paste an ASIN, a keyword, or an Amazon link
No Amazon login, no seller account, no card.
Set the line that matters
Pick the floor for your category — “below 4.3” — rather than a generic number.
Choose where it reaches you
WhatsApp, email, or both — and who on your team gets it.
Decide what happens next
Read it and act, or let a position rule raise the bid inside your cap.
Rating alerts FAQ
Checks run on a schedule, up to four times a day, between 07:00 and 21:00 in your marketplace timezone. So the honest answer is same day, not instantly. A change at 09:10 typically reaches you within a few hours; a change at 22:00 reaches you the next morning. Anything promising real-time Amazon monitoring is either polling harder than Amazon tolerates, or rounding up.
No. Checks and alerts run on public data — the search results page and the product page, exactly as a shopper sees them — so you can watch any ASIN, including products that are not yours. Connecting an Amazon Ads account is optional and unlocks two things: unlimited checks, and the ability for a position rule to change a keyword bid instead of only telling you about it.
Yes, and there is no card at any step. Checking a listing needs no account — five checks a session. A free account adds saved alerts on up to ten keywords or ASINs, and it does not expire or downgrade. Connecting an Amazon account makes checks unlimited. SellerMate earns on its ads automation platform, which is a separate product; the tracker stays free.
No. The alert reports the rating crossing your threshold, along with the current review count and the time of the check. It is a signal to go and look, not a review inbox — reading the reviews is a job for a person, and it is a five-minute job once you know which day it started.
Not yet. Review count is recorded and displayed on every check so you can see it in the history, but threshold rules currently cover price, star rating, organic position and sponsored position. Review-count rules need work on our alert evaluator first, and until that ships we are not going to describe it as a feature.
Three things commonly do this. Amazon removes reviews it judges to be inauthentic, and losing a handful of old five-stars moves the average without any new review appearing. A variation merge or split pulls in — or drops — the reviews attached to sibling ASINs, which can shift a rating sharply overnight for reasons unrelated to your product. And the displayed star rating is a weighted average that leans on recency rather than a plain mean, so the number can drift as older reviews age out of that weighting. The review count stored on each check is what lets you tell these apart: a rating drop with a falling count is a removal, and a rating drop with a flat count is usually weighting.
Whatever number your category stops converting under, which you can usually estimate from the top ten results for your main keyword. In most consumer categories that is between 4.2 and 4.4. A 0.1-movement rule is the more sensitive alternative and is worth running temporarily after any supply-chain change, then relaxing once the new batch has settled.
A rating slide is recoverable. A relaunch is not.
Check your rating now — about twelve seconds, no account needed.
Free forever · no credit card · nothing to cancel