Shelves of Babel
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INTELLIGENCE FOR THE INFINITE SHELF

The search results page is the shelf.
Know your share. Act on the opportunities.

Shelves of Babel measures your share of the shelf, records every move that changes it, and learns which moves matter: the threats and the openings, weeks before they show up in sales.

14-day trial · no credit card · no seller account connection required
protein powder · share of shelf · loading the live view
connecting…
★ Optimum Nutrition
13.4
Dymatize
9.5
Premier
8.5
Orgain
6.3
MuscleTech
7.1
Body F.
5.1
Ghost
4.2
Vega
4.3
Long tail · everyone else
34.6
★ = your brand · every brand resolved from raw search results, deduplicated and canonicalized automatically
LIVE DEMO
Browse a real account
For the next few minutes, you’re Optimum Nutrition, tracking the protein market on Amazon across three shelves. Every number is real, scraped daily. Click anything: switch shelves, flip lenses, investigate a competitor.
app.shelvesofbabel.com · demo account
Make it yours. Start free
THE PART YOU CAN’T SEE
Right now, you’re a bar on someone else’s chart.
Every day, your position on the shelf shifts: a competitor cuts price, flips to 4.5 stars, takes the Best Seller badge. The share moves weeks before the sales report shows it.
Most brands find out in the quarterly review. By then the shelf has already been re-divided.
your shelf · 6 weeks ago
#2
11.2%
#3
▲ price cut + badge, 5 wks ago
9.8%
#4
← you, quietly passed
8.4%
With a shelf tracked, this is a Tuesday-morning alert, not a quarterly surprise.
THE WIRE
The shelf has a memory.
Share tells you where you stand; the wire tells you why. Every night after collection, detection runs: price cuts, rating flips, badges won and lost, image swaps, new entrants. Each move goes on the record, timestamped and measured: what happened to that brand’s share in the 14 days after.
An analyst reads it for you. The fastest gainer gets narrated on your Watch card, unusual after-effects get flagged, and a monthly report writes itself from the record. Numbers computed, words generated: every figure comes from the data, never from the model.
And it keeps learning: every event’s aftermath goes into the archive, building the playbook of what actually moves share on a shelf.
the wire · everything that changed on the demo shelves
detected nightly
connecting to the wire…
real events from the demo account · “after” is the brand’s share change in the 14 days following: descriptive, not causal
HOW IT WORKS
Three steps to a market you can actually see
01
Define your shelf
A shelf is any set of keywords: "protein powder" + "whey protein" is a market. Pick keywords from our network map, or type your own.
02
We collect it daily
Every keyword, scraped every day. Every product resolved to a brand: positions, prices, ratings, badges, sponsored placements.
03
See what moved it
Share of shelf by brand, trends, movers, new entrants; and behind every shift, the events on the wire: price plays, review threats, and who to investigate.
INFINITE SHELVES
Infinite shelves, finite opportunities
The catalog is endless; the ground you can win is not. A category number only means something if you compete across the whole category, and most brands don’t. You have a niche product, or a few SKUs in a corner of a huge category, so “share of Sports Nutrition” is mostly brands you’ll never line up against.
Cut the shelf down to where you actually show up: plant protein powder and its real neighbors. Build a shelf per pocket of selection you play in, track the broad market alongside it, and regroup any time. The data follows.
Brands and agencies alike: track any shelf. Yours, a client’s, or one you’re about to enter.
Shelf: Protein Powder · the broad market
your share: 14.2% · rank #1 of 54
Shelf: Plant Protein · same data, your niche
your share: 8.7% · rank #3 of 47 · a different fight
illustration · the live demo above has the real numbers
EVERY LENS ON ONE SHELF
One shelf, eight ways to read it
Share of Shelf
The headline number: weighted share by brand, trend, movers, new entrants.
Rank Grid
Every ASIN’s daily rank on every keyword, color-banded.
$
Prices
Price vs. share, tiers, and promo detection across the shelf.
Reviews
Quality quadrant: fortresses, emerging threats, vulnerable incumbents.
Creative
Main-image archetypes and your listing quality vs. the winners.
SEO
Title terms the winners use that you don’t.
Keyword Network
See how keywords cluster by shared results. Lasso a cluster, make a shelf.
Reports
A monthly narrative of the shelf: share, threats, prices, demand.
MORNING CHECK-IN
The 6 AM scrape, in your pocket
Every shelf, every morning: share, movers, and who to watch, over coffee. Building and deep analysis stay on desktop; your phone is for knowing the number moved before anyone else does.
PRICING
Priced like a utility. Because it is one.
Launch
$19/mo
for founders with their first products
25 tracked keywords · typically 2–3 shelves
Unlimited shelves, regrouped any time
Daily collection · all eight lenses
Organic, sponsored & total share views
Start free trial
MOST POPULAR
Brand
$49/mo
for brands & agencies tracking whole markets
100 tracked keywords · a full market map
Everything in Launch
Monthly shelf reports & watch alerts
Keyword network & compare-shelves views
Start free trial
Launching something? Boost any shelf to hourly collection for $15/mo. Watch ranks move in real time, turn it off when the dust settles.
14-day free trial on both plans · no credit card · cancel anytime
Questions
How is "share of shelf" calculated?
We scrape your shelf’s keywords daily, attribute a weighted share to each search position (you choose the weighting curve), resolve every product to a canonical brand, and sum by brand. Organic and sponsored placements are tracked separately; view either, or both.
Do I need to connect my Amazon account?
+
Is this only for Amazon?
+
Can I track competitors or markets I don’t sell in?
+
How fresh is the data?
+
What’s with the name?
+
Your shelf is moving right now.
Set it up in two minutes. First numbers tonight.
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