DataFast vs Clycyo: Which Is Right for You?

DataFast and Clycyo target the same audience — entrepreneurs and developers shipping SaaS — and solve closely overlapping problems. If you're choosing between them, you're choosing between two distinct philosophies on the same problem space.

This page is written for buyers. We'll tell you honestly when DataFast is the better choice. We've used both tools, reviewed their public materials, and run side-by-side tests on production sites. What follows is the most useful comparison we can give you.

TL;DR — pick the right tool

Choose Clycyo if you need:

• GDPR compliance without a cookie banner
• A free forever tier (10,000 events per month, no card)
• Typed SDKs in TypeScript, Python, Go, or Ruby
• EU-hosted data residency
• A typed, multi-language SDK surface (browser, server, edge)

Choose DataFast if you need:

• Cookie-based long-window attribution (10+ day buyer journeys)
• Marc Lou's build-in-public community as part of your buying experience
• The signature live 3D globe visualizer (it's marketing eye-candy that does work)
• Tighter integration with the indie-hacker ecosystem (ShipFast, ZenVoice, NexyAI)

If neither set is decisive for you, Clycyo's free tier makes it the lower-risk first install. You can run it side by side with DataFast for a month and decide on real data.

Quick stats

The core philosophical difference

DataFast made an explicit, public choice: it uses cookies by default for accuracy. The founder, Marc Lou, has stated this directly:

“Cookie-free tracking sacrifices the accuracy needed for effective growth decisions.”

This is a defensible position. Cookies enable cross-device, multi-day attribution that pure cookieless tools cannot match. For products with long buyer journeys — say, a B2B SaaS where the average customer takes 12 days and 4 devices to convert — cookies do meaningfully improve attribution.

Clycyo made the opposite choice: cookieless by default, with optional server-side identification at conversion to recover the long-window attribution that cookies normally provide. The thesis is that the privacy/accuracy trade-off is overstated for most SaaS use cases, and that GDPR compliance without a banner is structurally better than GDPR compliance with one.

In our own measurement (50 sites, 30 days), cookieless tracking with server-side identification at conversion captured 93% of the conversion attribution that cookies captured — but with no banner, no consent rejection (which costs 25–55% of data on European traffic), and no compliance liability.

The right answer depends on your specifics. For most indie SaaS products, cookieless plus server-side at conversion is strictly better. For long-window B2B with anonymous research phases, cookies may genuinely win.

Pricing compared

Both tools start at roughly the same price point on paid plans.

DataFast pricing (as of April 2026):

• $9/month for 10,000 events
• $29/month for 100,000 events
• $99/month for 500,000 events
• 14-day free trial, no credit card required
• 50% affiliate commission for 12 months

Clycyo pricing:

• $0 free forever for 10,000 events (no credit card, no expiration)
• $19/month for 100,000 events (+$9 per 100k overage)
• $99/month for 1,000,000 events (with team SSO, audit log)
• $249/month for 5,000,000 events (with white-label, agency features)
• 50% lifetime affiliate commission

The structural difference: Clycyo has a free forever tier; DataFast does not. If you're building a side project or want to evaluate without commitment, Clycyo's free tier removes the trial-clock pressure entirely.

Developer experience

This is where the gap is largest.

DataFast ships a JavaScript snippet plus integrations for popular platforms (Next.js, Vue, Django, Laravel, WordPress, Shopify, Webflow). The integrations are functional but lightweight — typically a guide showing how to call their HTTP endpoint from your platform.

Clycyo ships first-party SDKs in TypeScript/JavaScript (browser + framework adapters for Next.js, React, Vue, Svelte, Astro, Nuxt, Remix), Node.js, Python, Go, Ruby, PHP, and edge runtimes. Each SDK is fully typed, has copy-paste examples in the docs, and is published to the relevant package registry with semver discipline.

If you write TypeScript or any backend language and you care about autocomplete, types, and matching SDK conventions to your stack, the gap is substantial.

Privacy & compliance

• DataFast uses cookies by default. In EU jurisdictions, you need a cookie consent banner.
• Clycyo is cookieless by default with 24-hour salt rotation. No banner needed in any standard jurisdiction. EU + US data residency available at site creation.

If you're a European company or sell to European customers, this difference matters legally, not just philosophically.

When DataFast genuinely wins

Honesty matters. Here's where DataFast is the better choice:

1. You're already in Marc Lou's ecosystem. If you've bought ShipFast, ZenVoice, or other Marc-Lou-built products, DataFast plugs into a community and a build-in-public methodology you already use.
2. You need 10+ day cross-device attribution for anonymous research phases. This is a real use case for some products. If your buyer takes 14 days and 5 devices to convert and you can't identify them server-side until purchase, cookies will give you better data than salt rotation.
3. You love the live 3D globe. It's a signature feature. We're building our own, but DataFast has it now.
4. You want a single founder you can DM directly. Marc Lou is famously responsive. If you value that, it's a real difference.

When Clycyo wins

1. You're in the EU or sell to EU customers. Cookieless by default removes the cookie banner overhead and the legal liability.
2. You want to evaluate without time pressure. The free forever tier removes trial-expiration anxiety entirely.
3. You write TypeScript or any backend language. The typed SDKs are objectively better DX than HTTP calls + integration guides.
4. You scale beyond indie-hacker volumes. At 1M+ events/month, Clycyo's pricing structure (Team and Agency tiers, with team features, white-label, scheduled reports) is built for the next stage.

Migrating from DataFast to Clycyo

If you decide to switch, the path is:

1. Install Clycyo alongside DataFast. They don't conflict; both can run simultaneously.
2. Wait 30 days. Compare the dashboards. Make sure the data you care about matches.
3. Switch your revenue webhook. Stripe webhook now points to Clycyo's /track endpoint.
4. Disable DataFast's script. Remove the <script> tag. Your bill stops at the next renewal.

Try it yourself

The fastest way to decide is to install Clycyo's free tier next to your existing DataFast setup and compare for two weeks.

<script defer src="https://cdn.clycyo.com/t.js" data-site="YOUR_SITE_ID"></script>

10,000 events per month, free forever, no credit card. If DataFast is genuinely better for your use case, you'll see it in the data — and we'll be the first to tell you.

Related reading

• Clycyo vs Plausible
• Clycyo vs Google Analytics
• Why Clycyo: the 4-axis argument
• Pricing and free tier