See which buyers buy and which sellers sell.

Two sides, one record per person. Kissmetrics follows each buyer and each seller from first click to the first sale.

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Free plan, no card. Buyers and sellers counted as people.

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FunnelsCounts people

Sellers with a listing · in order · Jul 1 to Sep 30 · sample data

People

16,00012,0008,0004,0000

Sales are counted. Which campaign brought them is not.

Two sides, a tool for each, and none of them sees the match.

Sample data: a fictional used-furniture marketplace, Jul 1 to Sep 30.

14,000sellers listed an item this quarter
31.8%of them sold
13.9%sold in lighting, against 43.4% in sofas

Kissmetrics puts the campaign, the listing and the sale on the same person, on both sides.

Listings and sales by tool, Jul 1 to Sep 30Illustration

Source

Says

Meta Adspurchases, by its own count

1,460

Your databasesellers with a listing, no campaign attached

14,000

Stripesellers paid out, no category or campaign

4,450

Kissmetricsfirst purchases, each on the buyer with the campaign

1,920

None of the three ties a sale to the campaign that brought the buyer or the seller.

Four questions every marketplace asks, with a report for each.

Made for the marketers and founders who decide where the budget goes, on both sides. Open the report, read the answer, and ask a follow-up in plain English.

Which campaigns bring first-time buyers?

tiktok_room_makeover finds buyers that retargeting and search get the credit for.

390: first purchases tiktok_room_makeover started, on first touch (the campaign that first brought the buyer)
140: credited to it on last touch (the last campaign before the purchase)
590: credited to meta_dpa_furniture on last touch, against 480 on first

Performance report, Growth plan

Campaign visitors

166,100

distinct people from tagged links, each counted once

Converted from campaigns

1,920

First purchase, in this period

Traffic performanceCounts people

Jul 1 to Sep 30 · sample data

Conversion: First purchaseGive credit to

People reached

meta_dpa_furniture

52,300

480

590

1.1%

google_shopping_used_sofas

41,800

610

540

1.3%

tiktok_room_makeover

37,600

390

140

0.4%

google_search_brand

14,900

170

320

2.1%

newsletter_new_listings

11,300

120

240

2.1%

reddit_home_decor

8,200

150

1.1%

Last touchBy campaignJul 1 to Sep 30Conversion: First purchase

Pay for buyers who buy. Recruit sellers who sell.

Your buyer budget

In this example, tiktok_room_makeover starts 390 first purchases and is credited with 140. Judge it on first touch before you cut it.

Performance report, Growth plan

Your seller budget

In this example, 3,100 sellers signed up from tiktok_declutter and 10.6% sold. Referred sellers sell 43.6% of the time: raise the seller credit.

Funnels, free

Your thin categories

In this example, lighting sells 13.9% of the time and storage 21.2%, against 43.4% for sofas. Point buyer campaigns at those two before you recruit more sellers there.

Funnels, free

Your stale listings

In this example, 2,920 sellers have had no message in 14 days. Export the group to your email tool and suggest a price drop. The group updates itself as messages arrive.

Populations, Growth plan

Website live in about 5 minutes. App events take a developer, or Claude Code with our installer skill.

Install with AI, send listings and sales from your backend, and every trade lands on a buyer and a seller with the campaigns that first brought them.

Install with AI

Kissmetrics installs with AI in about 5 minutes. Live view shows visits as they arrive, so you see it working.

Start from a ready-made schema

Ready-made schema examples show what to track and how to name it. For a marketplace: Signed up as seller, Listed item, Received message, Sold item, First purchase.

Taking payments with Stripe? Connect it

Each payment lands on the person who paid, next to the campaign they clicked first.

See all integrations

What marketplace teams ask before they start.

Straight answers.

Can one person be a buyer and a seller?

Yes. Each person is one record, so someone who sells a sofa and later buys a table shows up in both funnels, with the campaign that first brought them.

Will the numbers match our database or Stripe?

Not line for line. A payment that can’t be matched to a person can make totals differ, so check three trades you know. Kissmetrics counts people: one buyer is one person, however many visits they make.

How do we start, and do we need a developer?

Install with AI in about 5 minutes and pass the email at signup. Ready-made schema examples show what to track and how to name it. Listings, messages and sales happen in your backend, so sending them is a job for whoever looks after it.

What is free?

Tracking, the Funnels and Activity reports, the chat, dashboards and live view, with 100k events a month, 3 seats and no card. The Performance report, Populations, People search, visitors from AI assistants and CSV export are on Growth, from $99 a month. See pricing

Who owns the data?

You do. Export any report and its data on Growth, pull it through the API on any plan, and delete a person on request. Privacy policy

Find your industry.

The same reports, with the questions your kind of business asks.

SaaSWhich trials activate and pay, by campaign.
E-commerceWhich campaigns bring buyers who come back.
Lead generationWhich campaigns and ads bring leads that close.
FintechFrom application to KYC to a funded account.
EdTechWhich learners finish a course and renew.
Marketplaces (this page)Buyers and sellers, and which listings sell.
Sales-led B2BWhich campaigns create pipeline, not just MQLs.
HealthcareWhich campaigns bring bookings that show up.

Know which campaigns bring both sides of a sale.

Kissmetrics records where each buyer and seller came from, starting the day you add it.

https://

Free plan, no card. Buyers and sellers counted as people.

No website yet? Start without one