How to vibe codeFathom Analytics
A better Google Analytics alternative that's simple and privacy-first.
usefathom.com ↗Web Analytics
The verdict: can you vibe code Fathom Analytics?
Build a personal subset for your own sites, but keep paying if you need enterprise-grade data pipelines and legal compliance guarantees.
The dashboard UI and lightweight tracking script are straightforward to build, but you will hit engineering friction designing an ingestion endpoint that can safely handle high-frequency beacon requests without locking a standard relational database. Storing raw hits in a time-series or analytical store requires careful indexing to keep dashboard queries snappy.
Estimated effort: 2-3 weeks of focused development
What you can't replicate
- Pre-vetted legal compliance frameworks for GDPR, CCPA, and PECR
- Built-in trust from thousands of business customers and open-source projects
- Years of edge-case bot filtering signatures
Founded
2018
Raised
$0
Team
Small bootstrapped team
Cheapest paid tier
$15/mo
What Fathom Analytics does
Fathom Analytics provides privacy-focused, cookie-free website traffic analytics without cluttering sites with banner notices or tracking personal user data.
Core features
- Lightweight client-side tracking snippet (<2KB)
- Single-page analytical dashboard (visitors, pageviews, referrers, devices)
- Custom event and goal tracking with revenue values
- UTM campaign and newsletter link attribution
- Automated bot, crawler, and spam filtering
- Public and password-protected shared dashboards
- CSV data exports and scheduled email reports
- Multi-domain aggregation and IP/country blocklists
The business
Pricing
- Up to 100k pageviews$15/mo
- Up to 500k pageviews$45/mo
- Up to 2M pageviews$105/mo
Funding
$0
Pay vs build, cumulative
Break-even at month 2 — after that, every month is money kept.
The hard parts of vibe coding Fathom Analytics
- High-throughput event ingestion architecture handling traffic spikes without dropping tracking calls
- Aggregating billions of rows efficiently so dashboard queries return instantly
- Robust heuristics for automated bot, data center, and scraper filtering
- Privacy-preserving aggregation without storing identifiable raw user footprints
How to vibecode Fathom Analytics
Prerequisites
Node.jsfree
Required for running the Next.js development environment and build pipeline.
GitHubfree
Version control and deployment integration for Cloudflare.
AI coding tools
Recommended stack
| Frontend | Next.js with Tailwind CSS and Recharts |
|---|---|
| Backend | Cloudflare Workers (TypeScript) |
| Database | Turso (libSQL/SQLite at the edge) for lightweight analytical storage |
| Auth | better-auth |
| Payments | None (Personal use clone) |
| Other | Resend for scheduled email summaries |
Hosting & infrastructure
| Cloudflare | Hosting both the tracking ingestion endpoint worker and the Next.js frontend dashboard | $0-5/mo |
Build guide
01Project Scaffolding and Database Schema
Initialize a Next.js project with Tailwind CSS, configure Turso SQLite via libSQL, and set up database tables for websites, pageviews, and custom events.
Create a new Next.js 16 project with Tailwind CSS. Set up a Turso/libSQL database connection using Drizzle ORM. Define schemas for three tables: `sites` (id, domain, user_id, created_at), `pageviews` (id, site_id, path, referrer, browser, os, country, timestamp), and `events` (id, site_id, name, revenue, timestamp). Ensure indexes are created on `site_id` and `timestamp` for fast analytical aggregation queries.02Client-Side Tracking Script
Build a lightweight vanilla JavaScript snippet under 2KB that captures page loads and custom events, sending them via `navigator.sendBeacon` or `fetch` to the ingestion API.
Write a minimal vanilla JavaScript tracking snippet (target under 2KB uncompressed) that automatically logs page views on load and history state changes for single-page applications. It should capture `window.location.pathname`, `document.referrer`, and basic screen dimensions, then transmit them securely using `navigator.sendBeacon` or a fallback `fetch` request with `keepalive: true` to `/api/collect`. Include support for a custom tracking function `fathom.trackGoal('code', revenue)`.03High-Throughput Ingestion Endpoint
Create a Cloudflare Worker or Next.js API route that validates incoming tracking beacons, applies basic bot filtering heuristics, and inserts records into Turso.
Build an ingestion endpoint at `/api/collect` that accepts POST requests from the tracking snippet. Validate the incoming site ID against the database. Implement a basic bot-filtering heuristic checking User-Agent headers against known scrapers and data center IPs. If valid, parse the referrer URL, extract the path, lookup the country from Cloudflare request headers (`cf-ipcountry`), and insert an aggregated record into the `pageviews` table.04Authentication and Dashboard Layout
Implement authentication using better-auth and create the main analytical dashboard layout with site switchers and date range selectors.
Integrate better-auth into the Next.js application for email/password authentication. Build a clean, single-page dashboard layout styled with Tailwind CSS supporting light and dark modes. Include a site selector dropdown, a date range picker (Today, Last 7 Days, Last 30 Days), and summary KPI cards for Unique Visitors, Pageviews, Average Time on Site, and Bounce Rate.05Analytical Charts and Detailed Breakdowns
Add visual charts using Recharts for traffic over time, top pages, referrers, devices, and countries.
Build interactive dashboard panels using Recharts to display traffic trends over time. Implement data aggregation queries for top pages, referrers, devices, operating systems, and countries. Add click-to-filter functionality so clicking a row in the top pages table filters the rest of the dashboard by that specific path.06Event Conversions and UTM Tracking
Implement custom event tracking and UTM parameter parsing to measure campaign performance and revenue conversions.
Extend the ingestion endpoint and dashboard to support custom events and UTM parameters (`utm_source`, `utm_medium`, `utm_campaign`). Create an 'Events & Campaigns' tab in the dashboard displaying goal completion counts, total revenue generated per event, and a breakdown of traffic driven by specific marketing campaigns.07Scheduled Email Reports and CSV Export
Set up weekly/monthly email summaries using Resend and add one-click CSV data exports.
Implement a CSV export feature allowing users to download their raw or aggregated analytics data for any date range. Set up a scheduled cron job using Cloudflare Cron Triggers that queries weekly traffic totals per site and dispatches an email summary report using the Resend API.
Cost vs paying for Fathom Analytics
What will you build it with?
Starting total with Claude Code$0 one-time
Starting costs (one-time)
- AI Coding Assistant (Claude Pro)$20
Total~$20 one-time
Ongoing costs (monthly)
- Cloudflare & Turso Hobby Tiers$0/mo
Total$0/mo
Paying for Fathom Analytics
$15/mo
Your time to build
25 hours
AI tool credits
$20
Break-even
Free forever (self-hosted personal use)
Vibe code Fathom Analytics: FAQ
- Can you vibe code Fathom Analytics yourself?
- Solid side project — 75/100 vibecodeable. Build a personal subset for your own sites, but keep paying if you need enterprise-grade data pipelines and legal compliance guarantees.
- How long does it take to vibe code Fathom Analytics?
- 2-3 weeks of focused development — roughly 25 hours of hands-on time with an AI coding agent.
- How do you build your own Fathom Analytics?
- Scoped to personal use: Next.js with Tailwind CSS and Recharts on the front, Cloudflare Workers (TypeScript) behind it, Turso (libSQL/SQLite at the edge) for lightweight analytical storage for data. Follow the 7-step build guide on this page — each step has a paste-ready prompt for an AI coding agent.
- How do you code your own Fathom Analytics without being an expert?
- Use an AI coding tool (Claude Code or Cursor) and work in small steps: scaffold, data model, core screens, then deploy. Realistic effort: 2-3 weeks of focused development. The prompts on this page are written so the AI does the heavy lifting.
- How much does it cost to vibe code Fathom Analytics instead of paying?
- About ~$20 one-time to start and $0/mo to run, versus $15/mo for Fathom Analytics. Break-even: Free forever (self-hosted personal use).
- What stack should you use to vibe code Fathom Analytics?
- Next.js with Tailwind CSS and Recharts; Cloudflare Workers (TypeScript); Turso (libSQL/SQLite at the edge) for lightweight analytical storage; plus Resend for scheduled email summaries.