Attrifast vs DataFast
DataFast shows which channels drive revenue.
Attrifast shows which AI engines do.
DataFast is revenue-first analytics for indie hackers — channel attribution with a big integration ecosystem, from $9/mo. Attrifast goes one layer deeper on the fastest-growing channel: ChatGPT, Perplexity, Claude, and Gemini as separate Stripe revenue lines, plus AI visibility scans that show whether assistants cite you at all — $15/mo flat, cookieless by default.
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TL;DR verdict
Choose DataFast if you want the biggest indie-analytics ecosystem: native Stripe, LemonSqueezy, Polar, and Shopify revenue attribution, funnels and visitor journeys, Google Search Console keywords, an API, CLI, MCP server, and mobile apps — from $9/mo at low traffic volumes.
Choose Attrifast if AI is becoming a real acquisition channel for you: every major AI engine tracked as its own revenue line, AI visibility scans that show whether ChatGPT and Perplexity cite your brand, and cookieless-by-default tracking with a persistent first-party ID — for a flat $15/mo that does not rise with your traffic.
Attrifast vs DataFast — feature by feature
DataFast details from datafa.st as of July 2026. Verify current features and pricing on their site.
DataFast pricing explained (as of July 2026)
DataFast prices by monthly tracked events on a slider from 10k to 10M+. The two plans below show the entry (10k events) price point.
Source: datafa.st, July 2026. 14-day free trial, no card required. Pricing changes — verify on their site before deciding.
The math worth noticing
At 10k events per month, DataFast Starter is cheaper — $9 vs $15. The lines cross as you grow: Attrifast's $15/mo includes 100k events, 10 websites, and 5 team members flat, while DataFast's price climbs with your event volume, and its Starter tier is limited to 1 website and 1 team member. If you expect traffic growth — or you want AI visibility scans, which DataFast does not offer at any tier — the flat plan is the cheaper path within a few months.
Where DataFast genuinely wins
DataFast is one of the best-liked products in indie analytics, and the reasons are real. If these are your priorities, it is a strong choice.
Payment-provider breadth
Native revenue attribution for Stripe, LemonSqueezy, Polar, and Shopify — connectable simultaneously — plus a Payment API for anything else (as of July 2026). If you sell through LemonSqueezy or Polar, DataFast supports you today and Attrifast does not.
The agent-ready ecosystem
A full API, a CLI, an MCP server (released July 2026), a React Native SDK, and iOS/Android apps. You can ask Claude Code or Cursor questions about your analytics in plain English. Attrifast has nothing equivalent yet.
Funnels, journeys, and GSC keywords
Custom goals with full visitor journeys from first click to conversion, live visitor intelligence, and a Google Search Console integration that estimates which SEO keywords drive revenue. Attrifast covers goals and channel revenue, not funnel visualization or GSC.
No-code integration coverage
WordPress, Shopify, Webflow, Framer, Bubble, Wix, Squarespace, Ghost, Podia, Kajabi, and Google Tag Manager, plus guides for every major framework — and a Plausible data importer. Built in public by Marc Lou with 20,000+ users; the community and momentum are real.
If those four things describe what you need, DataFast is the right pick. The rest of this page is for founders whose next growth question is about AI — the channel neither GA4 nor channel-level analytics breaks out properly.
Where Attrifast wins
Attrifast's job is the AI layer of revenue attribution: which engines send buyers, what that traffic is worth, and whether AI cites you at all.
AI engines as revenue lines
ChatGPT, Perplexity, Claude, Gemini, AI Overviews, and Copilot each get their own revenue line tied to Stripe — not lumped into Referral or Direct. In the Attrifast 200-site benchmark, AI traffic converts at 2.7% vs 1.4% for Google organic on B2B SaaS, and 34% of GA4 “Direct” traffic is actually AI-referred.
AI visibility scans included
Attrifast scans 4 AI engines to show whether they cite your brand or your competitor when buyers ask for recommendations — the demand side of the AI channel. DataFast measures traffic that already arrived; Attrifast also measures the traffic you are not getting and why.
Cookieless by default, flat price
A persistent first-party random ID in localStorage — no cookies, no banner in most setups, no 24-hour identifier rotation weakening long-window attribution. $15/mo flat with 100k events, 10 sites, and 5 team members; the price never climbs with a traffic spike.
The attribution accuracy detail that matters
Revenue attribution lives or dies on stable visitor identity. DataFast's own FAQ is admirably honest here: its default script uses cookies (so a banner may be required), and its optional cookieless script rotates visitor identifiers roughly every 24 hours, which it notes is less accurate for revenue attribution over weeks or months. Attrifast's first-party localStorage ID persists across sessions without cookies — you keep multi-week attribution windows and skip the banner. SMBs undercount their AI traffic by a median of 64% already; identity churn makes it worse. See the full dataset at attrifast.com/research.
When to choose DataFast vs when to choose Attrifast
Choose DataFast if...
- •You sell through LemonSqueezy or Polar and need native revenue attribution for them today.
- •You want funnels, visitor journeys, live visitor intelligence, and Google Search Console keywords in one tool.
- •You work agent-first and want an API, CLI, and MCP server so Claude Code or Cursor can query your analytics.
- •Your traffic is small (around 10k events/mo) and the $9 Starter tier fits — one website, one seat.
Choose Attrifast if...
- •You want ChatGPT, Perplexity, Claude, Gemini, AI Overviews, and Copilot as separate revenue lines, not folded into Referral.
- •You want AI visibility scans — does AI recommend you or your competitor — bundled with analytics instead of a second $90+/mo tool.
- •You want cookieless-by-default tracking with a persistent first-party ID: no banner, no 24-hour identity rotation.
- •You prefer one flat $15/mo covering 100k events, 10 websites, and 5 team members, whatever your traffic does.
DataFast alternative — frequently asked questions
How much does DataFast cost?
As of July 2026, DataFast prices by monthly tracked events. At the 10k-events tier, Starter is $9/month (1 website, 1 team member, 3 years of data retention) and Growth is $19/month (30 websites, 30 team members, 5+ years retention, social mentions, and 𝕏 links attribution). Prices rise with your event volume up to 10M+ events, and yearly billing gives two months free. Both plans include a 14-day free trial with no card required. Attrifast is a flat $15/month with 100k events, 10 websites, and 5 team members included — the price does not change as your traffic grows within that allowance.
Is Attrifast related to DataFast?
No. Attrifast and DataFast are independent products from different companies — the similar names are a coincidence of a crowded category. DataFast (datafa.st) is a revenue-first analytics tool built in public by Marc Lou. Attrifast (attrifast.com) is a revenue-attribution and AI-visibility tool focused on tracking which AI engines — ChatGPT, Perplexity, Claude, Gemini — drive paying customers. Both connect analytics to payment data; they differ in AI depth, pricing model, and default privacy posture.
What is the best DataFast alternative?
It depends on the question you need answered. DataFast is excellent at "which marketing channels drive revenue" with a big integration ecosystem (API, CLI, MCP, mobile apps). If your question is "which AI engines drive revenue, and does AI even cite my brand," Attrifast tracks ChatGPT, Perplexity, Claude, Gemini, AI Overviews, and Copilot as separate revenue lines and runs AI visibility scans — for a flat $15/month. If you only need traffic numbers without revenue, Plausible or Fathom are simpler options.
Does DataFast track ChatGPT or Perplexity revenue?
DataFast attributes revenue to traffic sources, so an AI referral lands in its source reporting, and its plans list an "AI bot traffic" report for crawler visits. As of July 2026, its homepage does not market per-engine AI revenue lines or AI visibility scanning. Attrifast is built around exactly that: ChatGPT, Perplexity, Claude, Gemini, AI Overviews, and Copilot each get their own revenue line, and AI visibility scans show whether assistants cite your brand. In the Attrifast 200-site benchmark, AI traffic converts at 2.7% versus 1.4% for Google organic on B2B SaaS sites.
Does DataFast need a cookie banner?
By DataFast’s own FAQ (July 2026), its default tracking script uses cookies to recognise returning visitors, so depending on your jurisdiction you may need a cookie banner — same as most cookie-based analytics. It also offers an optional cookieless script, with the trade-off that visitor identifiers rotate about every 24 hours, which weakens revenue attribution over weeks or months. Attrifast is cookieless by default and identifies visitors with a persistent first-party random ID in localStorage — no banner needed in most setups, without the 24-hour identifier rotation.
Does DataFast work with Stripe?
Yes — DataFast has native integrations with Stripe, LemonSqueezy, Polar, and Shopify (as of July 2026), plus a Payment API for anything else, and you can connect multiple providers at once. That breadth is a genuine advantage if you sell through LemonSqueezy or Polar. Attrifast connects natively to Stripe and Shopify: paste a restricted API key and webhooks are configured automatically, so every payment and subscription is attributed to its channel.
Is DataFast good for indie hackers?
Genuinely, yes. It is built in public by Marc Lou, reports 20,000+ users, starts at $9/month, and has integrations for nearly every no-code platform plus an API, CLI, and MCP server for AI-assisted workflows. If most of your growth is starting to come from AI recommendations, though, Attrifast will tell you which engines are actually producing paying customers — and whether ChatGPT cites you or your competitor — which is a different job than channel analytics.
See the AI layer of your revenue
ChatGPT, Perplexity, Claude, and Gemini as separate revenue lines — plus AI visibility scans that show whether assistants cite you. $15/mo flat, 2-minute setup.
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