Lyre Leads
The arithmetic of a small listing
A star rating is an average, and an average of eight things is fragile.
Take that landscaper. Google shows ratings to one decimal, so 4.7 on 6 reviews means the stars add up to somewhere between 27.9 and 28.5. Afterwards, 3.8 on 8 reviews adds up to between 30.0 and 30.8. The two new reviews contributed between 1.5 and 2.9 stars together, and the only way to get there is two 1-star reviews.
Put the same two 1-star reviews on a listing with 500 reviews at 4.7 and it becomes 4.685, which still displays as 4.7. At worst it ticks down to 4.6. Nobody notices.
Getting back is harder than falling. From 3.8 on 8 reviews, the landscaper needs about 10 consecutive 5-star reviews to show 4.5 again, and about 20 to show 4.7. This landscaper gained two reviews in more than six months, so that's a long way.
It took two reviews to lose nine tenths of a star, and it will take around twenty to earn it back.
Statistically nothing, commercially everything
When we set the rules for our own rating-drop signal, the first instinct was to require enough reviews for the change to mean something statistically. That would have filtered out exactly this case.
We decided the other way. Customers don't run significance tests. They see 3.8 next to a competitor's 4.6 and they pick the competitor. The owner knows it, feels it every time the phone doesn't ring, and is more open to help with reviews now than before it happened. The signal marks the moment a business needs someone, whether or not it actually got worse.
So our rating drop fires on a move of 0.3 stars or more, which is always visible on a one-decimal display, on any listing with at least 5 reviews. Below five, a single review is the rating, and a swing tells you nothing except that the listing is new.
A second example, and a caveat
A flooring contractor went from 3.6 stars on 10 reviews to 3.3 on 13. The three newer reviews averaged somewhere between 1.9 and 2.7 stars. That looks more like a run of unhappy customers than one bad day, which is a different conversation, because something in the business may actually be wrong and review generation alone won't fix it.
The caveat is about timing. We only see a rating when we see the listing again. For both of these businesses the gap between our two sightings was more than six months, so the drop happened somewhere in that window, not necessarily last week. On a small listing that's less of a problem than it sounds. The number only climbs back as new reviews arrive, and these two listings gained two and three reviews in more than six months, so the damage tends to stay visible for a long time.
Who this list is for
Reputation management and review-request software. The obvious buyer. A business that just dropped below 4 has the problem you solve and knows it.
SEO and marketing agencies. Rating shapes whether people click a listing at all, and a sudden drop is a concrete, visible reason to talk. It pairs with the approach in finding SEO clients with low reviews, which targets businesses with too few reviews rather than a falling rating.
Anyone who reads it next to a review surge. A lot of new reviews alongside a falling rating is a business being complained about, not one growing. The surge rule is in what counts as a review surge.
How not to open
Never lead with the drop. "I noticed your rating fell to 3.8" tells the owner you've been reading their worst reviews, and they'll assume you'll use it against them.
Lead with the fix and let them connect it:
"Most landscapers we talk to have far more happy customers than reviews, because nobody asks at the right moment. We set up a simple way to ask after every finished job. Worth ten minutes?"
They already know their number, so you don't need to say it.
For the checks we run before any signal reaches you, including this one, see how to tell if a buying signal is real.
Filter for Rating Drops
Lyre Leads tracks the rating of every business it sees on Google Maps and flags a drop or rise of 0.3 stars or more on listings with at least 5 reviews, with the before and after rating shown next to each one. A drop needs two sightings, so it appears after a business has been seen again. Free plan includes 500 leads a month.
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