DataFast

Web analytics tool that attributes revenue to marketing channels.

AnalyticsSaaSMarketing

Active^{Source [2]}^{Source [1]}Last verified Oct 2, 2026

About DataFast

DataFast is web analytics software that ties visitors and marketing channels to revenue, aimed at startup founders. It offers a 14-day free trial and says it has 26,339 users.^{Source [2]}

It is sold as a subscription. TrustMRR shows $296,384 in all-time Stripe revenue and $31,104 in the 30 days to 2 October 2026.^{Source [1]}

TrustMRR, also owned by Lou, uses DataFast as one of its traffic verification sources.^{Source [3]}

What happened

Marc Lou launched DataFast in 2024 as revenue-first web analytics for startup founders. It is a subscription product and, per Stripe data on TrustMRR (which Lou owns), made $257,469 in the 12 months to 2 October 2026. It added a cookieless version in 2026.^{Source [1]}^{Source [2]}^{Source [4]}

Timeline

2026Launched a cookieless version.^{Source [4]}
2024-07Founded, per its TrustMRR profile.^{Source [1]}

Products and brands

DataFast analytics: Revenue attribution analytics with an MCP integration.^{Source [2]}

How it makes money: Monthly subscriptions after a free trial.^{Source [2]}^{Source [1]}

Leadership

Marc Lou

Founder^{Source [1]}

Since 2024

Funding and financials

Last 12 months revenue (Stripe-verified on TrustMRR, which Lou owns; as of 2 Oct 2026): $257,469^{Source [1]}^{Source [3]}
Last 30 days revenue (Stripe-verified on TrustMRR, as of 2 Oct 2026): $31,104^{Source [1]}

People on Founded, and where they went next

1 person on record, connected to 7 other companies.

Person	Here	Also built
Marc Lou	Founder2024 to now	TrustMRR2025 to nowActiveCodeFast2024 to nowActiveByeDispute2023 to nowActiveMakeLanding2023AcquiredShipFast2023 to nowActiveIndie Page2023 to nowActiveVirallyBot2018 to 2020Shut down

Sources

DataFast verified revenue profile, TrustMRR. Accessed Oct 2, 2026.
DataFast | Find out which marketing channels drive your revenue, DataFast. Accessed Oct 2, 2026.
TrustMRR llms.txt, TrustMRR. Accessed Oct 2, 2026.
Marc Lou (@marclou) - 19 startups · $3,200,579 revenue, TrustMRR. Accessed Oct 2, 2026.

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