Know the day a competitor moves — not the month you notice sales slipped.
Listings don't lose overnight — they erode. A rival drops price, swaps the hero image, earns a badge, and your click share quietly bleeds for weeks before a dashboard flags it. SynthX re-runs the same category-true buyer panel on a cadence, tracks your Win Probability against live competitors, and shows every change the moment it lands.
What this costs you today
By the time the number moves, the damage is done
Rivals change constantly
A competitor's new hero image, a slipped buy-box price or a fresh certification badge shifts the buyer's choice — and none of it shows up in your own listing.
Drift is invisible
No single day looks like a problem. Click share erodes a point at a time until, a month later, the sales line has quietly bent.
Dashboards report, they don't explain
Analytics tell you conversion fell. They never tell you which rival moved, what they changed, or how much it cost you.
Manual monitoring doesn't scale
Eyeballing a dozen competitors across a catalog every week is the first task that gets dropped when things get busy.
Re-audit on a schedule and watch the line move
- Re-run the same category-true buyer panel on a cadence — weekly for active listings, monthly to defend stable ones.
- Track Win Probability and Listing Health for each ASIN over time, so a slip shows up as a bent line, not a lost quarter.
- See every competitor move — price, hero image, badge, review velocity — pulled from live marketplace data.
- Hand clients a trend line that proves the changes you shipped actually moved the number.
Not a claim — here's how SynthX proves it
Every promise above is backed by the same engine and the same report you can open right now.
It's the same panel, re-run over time
Monitoring re-runs the exact category-true buyer panel that powers a one-off audit, so a tracked score is directly comparable run to run and a slip reflects a real change in modeled buyer preference.
Competitor moves come from live data
Each run re-fetches your rivals' real listings from live marketplace data — price, hero image, badges, review counts — so a flagged change is something a shopper actually sees, not an estimate.
The trend is the deliverable
The cadence view plots each re-audit and the score impact of what changed since the last one, turning a pile of snapshots into a line a client can read at a glance.
Built to triage, not just report
Every tracked ASIN rolls up into one Win Probability view you can sort, so a catalog surfaces its fastest-slipping listings first instead of burying them.
- Jul 25LatestLatest audit — win probability up to 61
- Jul 19Image 3 swapped to lifestyle; trust +12
- Jul 12Warranty badge added to hero
- Jul 5Baseline teardown — win probability 42
Everything you get back
Every run returns a scored, evidence-backed teardown — not a checklist.
Score history over time
Win Probability and Listing Health tracked per ASIN, so you see the trend — not just today's snapshot.
Competitor change log
Price, hero image, badge and review-velocity moves on the rivals you actually compete with.
Cadence you control
Weekly for launches and active optimization, monthly to defend a stable catalog.
Portfolio view
Every tracked ASIN in one place, sorted by where your odds are slipping fastest.
From ASIN to answer in minutes
Pick the ASINs to watch
Choose the listings — and the catalog — you want defended.
Set the cadence
Weekly or monthly; SynthX re-runs the same panel against live competitors on schedule.
See what changed
Each run surfaces the competitor moves and the score impact since last time.
Act on the movers
Fix the listings losing ground first and re-score to confirm the recovery.
Built for the teams on the hook for the number
Brand & catalog managers
Defend click share across a portfolio without eyeballing rivals by hand.
- Watch Win Probability across every SKU
- Catch a rival's move the week it happens
- Fix the fastest-slipping listings first
Agencies on retainer
Turn monitoring into a recurring, provable deliverable.
- Show a trend line in every QBR
- Flag competitor moves before the client does
- Prove shipped changes moved the number
Founders & operators
Stay ahead of the shelf without living in the data.
- Know when a competitor forces a response
- Skip the manual weekly re-checks
- Spend attention only where odds are slipping
Questions, answered
How is this different from a rank tracker?
Rank trackers tell you a keyword position moved. SynthX re-runs a category-true buyer panel and tells you why your odds of the click changed — which rival moved, what they changed, and the score impact.
What competitor changes does it catch?
Moves that shift the buyer's choice — a new or swapped hero image, a buy-box price change, a new certification or best-seller badge, and review-velocity shifts — re-fetched from live marketplace data each run.
Weekly or monthly — which should I choose?
Weekly for active launches and listings you're mid-optimizing; monthly to defend a stable catalog. Either way you get a trend line instead of a one-off snapshot.
Can I monitor a whole catalog?
Yes — that's the point. Track many ASINs and sort by where your Win Probability is slipping fastest, so your attention goes to the listings losing ground first. Book a demo and we'll set it up for your catalog.