Amazon performance OS
Free forever
Track every ASIN, competitor, and rank movement in one view.
Seller Lines keeps every ASIN, competitor, and alert in one interface. From SL-Health to AI summaries, you get the same focused experience on the web as you do inside the app.
Tracked ASINs
182
+12 this week
Avg BSR Movement
-214
better vs 7d
Buy Box Coverage
86%
↑ 4 pts
$0 / month
Free forever. No catches.
Live control panel
Real-time metrics at a glance
SL-Health Overview
78 / 100
Healthy • Sales +6.4% week over week
ASIN Alerts
5 open
3 price drops · 2 inventory flags
AI Insight
“Focus on Variant Pack B – +18% velocity vs peers.”
SL-AI Daily Digest
"4 ASINs exceeded velocity expectations. Bundle Kit A is trending +18% vs competitors."
No credit card required. No hidden tiers. Start tracking ASINs in minutes.
Unified command center
Your entire Amazon motion on one chart.
Monitor share of Buy Box, BSR swings, and competitor moves from a single dashboard. Visual callouts surface the ASINs that need action so you can skip the spreadsheet hunt.
- Overlay Lightning Deals and promo badges directly on the timeline so you spot what triggered the jump.
- Filter to owned vs competitor ASINs to prioritize the right work each morning.
- Export-ready visuals for leadership standups or agency status decks.
What sellers say
Loved by operators who live in the data.
So good. Simple but powerful to be able to look back and say 'when did we run a deal on that product?' and, to be able to monitor competitor moves without having to do a storewalk every day is a time saver.
RY
Director of Ecommerce
Less guessing, more quick-hit information—and who doesn't love a good dashboard? The TV Dashboard feature is cool.
Dave
VP, Marketplace Sales
Feature snapshots
Every tool sellers reach for daily.
Click into ASIN details, switch to TV mode, or manage the entire queue without leaving this page.
ASIN-level scorecards
See price, Buy Box status, and BSR movement for every SKU without digging through endless reports.
Groups & comparisons
Bundle ASINs or competitors to benchmark velocity and spot gaps in seconds.
Presentation-ready TV mode
Pin dashboards on a monitor in the war room so the team can watch share of voice live.
Tracked ASIN queue
One list that shows ownership, sync status, and quick actions for every monitored ASIN.
“I built this because I was tired of looking at sales wondering ‘Sales are up (or down). Is it just us? Are competitors moving ahead of us? Is the whole category up (or down) with us as well? Do I have competitors running a deal?’ With a quick look at our combined charts, I can see the answer to all those questions.”
Mark · Founder, Seller Lines
3 steps to monitoring everything
From setup to daily rhythm in minutes.
Step 1
Add your ASINs
Paste in the ASINs you own plus the competitor listings you want to keep an eye on.
Step 2
Mark owned vs. competitor
Flag each ASIN so Seller Lines can split alerts, health, and reports by what belongs to you.
Step 3
Start tracking
Hit save and watch pricing, rank, and Buy Box updates roll in automatically—no integrations required.
Product capabilities
Everything from your dashboard — explained simply.
Simple cards, clear metrics, and the features sellers actually reach for every day.
Track ASINs & Competitors
Monitor price, rank, and inventory across every ASIN you own or watch. Group products or competitors to compare movement in seconds.
Seller Lines Performance Index
See a portfolio health score built from sales velocity, Buy Box strength, and best seller rank movement extracted from Amazon data points.
Daily AI Insights
Our SL-AI summaries read your data each morning and call out what changed, what needs attention, and where you should lean in.
Automated Alerts & Digests
Get notified when tracked ASINs win/lose the Buy Box, drop in price, or break rank thresholds. Digest emails keep teams aligned without logging in.
Simple workflow
A straight line from data to action.
Connect and add ASINs
Import the ASINs you own plus the competitors you watch. Seller Lines keeps them synced and normalized.
Organize with Groups & Alerts
Create groups for product lines, retailers, or campaigns. Layer on custom alerts and health thresholds.
Review insights daily
Dashboards, SL-Health, and AI digests surface the “why” behind every change so you can act before revenue is impacted.
Stay ahead of every change
Alerts that keep you one step ahead.
Alerts, digests, and notifications are built right into your workflow so nothing slips through the cracks.
- Instant notifications for Buy Box events, dramatic BSR swings, and price changes.
- Performance timelines show how owned ASINs stack against competitor groups.
- SL-Health uses the same scoring that powers your dashboard card, letting teams triage faster.
Realtime Alert Stream
ASIN B0BLEND123
Price drop detected · −7% vs last synced
Group: Core Bundle
SL-Health moved from 74 → 69 after Buy Box loss
Daily digest scheduled
Sent to ops@brand.com · includes AI summary + actionable list
Give your seller team the clarity they need to win on Amazon.
Sign up in minutes, add your ASINs, and we’ll populate SL-Health, AI insights, and alerts automatically.