Methodology

Updated monthly. Research that goes deeper.

Data is updated every month, with more in-depth analysis of product trends, industry comparisons and growth changes.

Coverage & updates

We compile monthly referral traffic to Stripe Checkout across thousands of product domains. Historical data reveals changes over time; it is not a real-time traffic feed.

Domains are research subjects, not necessarily separate companies. Root domains and subdomains remain separate to avoid combining overlapping traffic.

How metrics are calculated

All 16 months from June 2025 through September 2026 use TotalVisits supplied directly by Similarweb, checked against the absolute-visit CSVs and raw responses. These are platform traffic estimates, not transactions or revenue.

Monthly change is this month minus last month; growth is that change divided by last month. Calculations retain full precision. Display values are rounded to one decimal for k and two decimals for M.

Two different totals

The top-level trend and referral table use different totals. None of the 16 months derives visits by multiplying the top-level total by displayed share. Original groups remain through June 2026; July onward uses expanded domain records. Changes in group composition can affect month-to-month comparisons and do not by themselves establish business growth.

Missing data & registration dates

Missing observations stay blank, without zero-filling or interpolation. Growth is unavailable when the previous month is missing or zero; charts leave gaps for missing months.

Registration dates come from public RDAP / WHOIS records. Subdomains use root-domain dates; unknown or inconsistent dates are excluded from age filters. Registration is not a product launch date.

Research limitations

Third-party traffic estimates can be affected by sample coverage, models and payment paths. Product descriptions use public website information. Similar products are not necessarily substitutes, and traffic growth does not establish revenue growth.