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DataFast
What DataFast is
DataFast is revenue-focused web analytics that connects website visits with completed payments to identify which sources, campaigns, and landing pages bring paying customers. Its real-time dashboard shows visitors, pageviews, sources, and revenue, and lets users compare channels by revenue per visitor. A 652-byte gzipped tracking script loads asynchronously and can be added with one script tag. DataFast says it uses no cookies or cross-site tracking and offers session-only tracking; a first-party opaque ID can connect revenue attribution for 30 days. The Revenue API accepts server-side payment events from Stripe, LemonSqueezy, Paddle, or another provider that can call an HTTP endpoint after a successful payment. Order IDs can prevent webhook retries from counting the same payment twice. The tracker is open source, and users can host the stack themselves. The maker describes it as a tool for founders who want to know which channels bring paying customers. The free plan allows 5,000 events per month on one website and retains data for seven days; Founder is $5 a month for 10,000 events and three years of retention.
Who it suits
DataFast suits founders who want to connect website traffic with completed payments and compare channels by revenue. It also offers a self-hosted option for users seeking full data ownership.
What it does well
- Connects completed payments to traffic sources
- Dashboard compares revenue per visitor
- No cookies or cross-site tracking
- Open-source tracker can be self-hosted
What to know first
- Free plan retains data for seven days
- Product-level filters, CSV exports, and scheduled reports are unavailable
- Attribution can fail when visitor IDs are missing
Limits
The Free plan permits 5,000 events per month for one website and retains data for seven days. Founder raises the allowance to 10,000 events for one website and retains data for three years; product-level filters, CSV exports, and scheduled reports are unavailable.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Free | $0 forever · 5,000 events/month · 1 website · 7 days data retention · Core analytics · Revenue API attribution | Free |
| Founder | $5/month · 10,000 events/month · 1 website · 3 years data retention · Revenue attribution · Revenue per source and campaign · Email support | $5 a month |
As datafast.app lists them, read 11 Oct 2026. The maker's own page has the final word.
Getting started
- Open the DataFast website
- Choose the Free plan or Founder plan
- Add the asynchronous tracking script with one script tag
- Send successful payment events through the Revenue API
- Connect Stripe, LemonSqueezy, Paddle, or another HTTP-capable provider
- Use the web dashboard, API, or self-hosted stack
Verdict
DataFast focuses on the connection between visits and payments, with a free plan and a $5 a month Founder plan. Attribution depends on the same visitor ID reaching checkout, and some reporting features are not available yet.
Questions
Is there a free plan?
Yes. Free costs nothing, with 5,000 events monthly for one website and seven days of retention.
What does Founder cost?
Founder costs $5 a month and includes 10,000 events monthly for one website.
Which payment systems can send events?
The Revenue API accepts server-side events from Stripe, LemonSqueezy, Paddle, or another provider that can call an HTTP endpoint.
Does DataFast use cookies?
DataFast says it uses no cookies or cross-site tracking and offers session-only tracking.
Can the tracker be self-hosted?
Yes. DataFast says its tracker is open source and can be self-hosted for full data ownership.
What can affect attribution?
Attribution depends on the same DataFast visitor ID reaching checkout; blocked visits or missing IDs can leave payments unattributed.
Facts from DataFast's own pages
- Accuracy limitation
- The maker says attribution depends on the same DataFast visitor ID reaching checkout; blocked visits or missing IDs can leave payments unattributed. · datafast.app, 11 Oct 2026
- API access
- Yes · datafast.app, 19 Sept 2026
- Attribution
- DataFast attributes completed payments to the source, campaign, or page that introduced the customer. · datafast.app, 11 Oct 2026
- Dashboard
- The real-time dashboard shows visitors, pageviews, sources, and revenue, and supports comparing channels by revenue per visitor. · datafast.app, 11 Oct 2026
- Data retention
- limited · datafast.app, 19 Sept 2026
- Event handling
- Order IDs can be used as event IDs so webhook retries do not count the same payment twice. · datafast.app, 11 Oct 2026
- Free plan
- Yes · datafast.app, 19 Sept 2026
- Intended audience
- The maker describes DataFast as a tool for founders who want to know which channels bring paying customers. · datafast.app, 11 Oct 2026
- Limits
- Product-level dashboard filters, CSV exports, and scheduled reports are not available yet. · datafast.app, 11 Oct 2026
- Open source
- DataFast says its tracker is open source and that users can host the stack themselves for full data ownership. · datafast.app, 11 Oct 2026
- Payment integrations
- The revenue API accepts server-side payment events from Stripe, LemonSqueezy, Paddle, or another provider that can call an HTTP endpoint after a successful payment. · datafast.app, 11 Oct 2026
- Privacy
- DataFast says it uses no cookies or cross-site tracking and offers session-only tracking; its first-party opaque ID can connect revenue attribution for 30 days. · datafast.app, 11 Oct 2026
- Product
- DataFast is revenue-first web analytics that connects website visits to completed payments to identify which sources, campaigns, and landing pages bring paying customers. · datafast.app, 11 Oct 2026
- Paid from
- 5 · datafast.app, 19 Sept 2026
- Tracking
- The tracking script is 652 bytes gzipped, loads asynchronously, and can be added with one script tag. · datafast.app, 11 Oct 2026
Where DataFast stands on Freedom251
- Web analytics tools#23 of 142