GA4 alternatives for founders: 7 options, and how to pick one
Plausible, Fathom, Umami, Matomo, Simple Analytics, PostHog and DataFast compared on what a small SaaS actually needs: sources, conversions, privacy and setup time.
· 10 min read
Google Analytics 4 can answer almost any question, if you know where to look and have the time to set it up. Most founders don't need almost any question. They need three: where do visitors come from, which of them sign up, and which of them pay.
That gap is why there are so many lighter alternatives. This guide compares the main ones on the things that matter to a small product, and is honest about where each one falls short. (Yes, we make one of them. It's at the end.)
What to look for
- Sources you can trust. Clear channels, UTM campaigns, and ideally visits from AI assistants as their own channel instead of inside Referral.
- Conversions without a project. Goals or events you can add in minutes, and a way to tie them to the visit that brought the person in.
- Privacy that fits your market. Whether you need a cookie banner depends on where your users are and what the tool stores.
- Ad-blocker resilience. Blockers hide a meaningful share of visitors from third-party scripts, especially on developer audiences. Being able to serve the script from your own domain matters.
- Self-hosting, if you want it. Some teams prefer to own the data and the server; others want zero maintenance.
The options
1. Plausible
Open source, cookieless and hosted in the EU, with a single-page dashboard that anyone can read. Goals, UTM campaigns and revenue goals are built in, and you can self-host the community edition. A strong default if privacy and simplicity come first.
Falls short if you want to follow individual visitors across visits, since cookieless tracking can't recognise returning people.
2. Fathom
A paid, privacy-first tool with a clean dashboard, cookieless tracking and an EU isolation option for European visitors. It is closed source and hosted only.
3. Umami
Open source and easy to self-host on a small server or a free database tier, with a hosted cloud version too. Popular with developers who want simple analytics they fully control.
4. Matomo
The closest thing to a full Google Analytics replacement. Open source, self-hosted or cloud, with deep reports, e-commerce tracking and plugins for heatmaps and session recordings. More to learn and more to maintain than the others here.
5. Simple Analytics
A Netherlands-based, privacy-first tool that stores no personal data and needs no cookie banner. Simple dashboards, with an AI assistant for asking questions about your data.
6. PostHog
A product analytics suite: web analytics, funnels, session replay, feature flags, experiments and surveys in one place, with a large free tier. Excellent once you need to understand behaviour inside your app; more than you need for "where do my sign-ups come from?".
7. DataFast
Built for founders around revenue: it connects to payment providers and shows which channels bring paying customers, with a live view of visitors. A good fit if revenue attribution is the main thing you want.
At a glance
| Tool | Best for | Open source | Self-host |
|---|---|---|---|
| Plausible | Simple, private site stats | Yes | Yes |
| Fathom | Private stats, fully managed | No | No |
| Umami | Developers who want to own it | Yes | Yes |
| Matomo | A full GA replacement | Yes | Yes |
| Simple Analytics | Strict privacy, EU | No | No |
| PostHog | Product analytics inside the app | Yes | Yes |
| DataFast | Revenue by channel | No | No |
| Lantern | Founders tracking sources, AI traffic and sign-ups | No | No |
How to choose in five minutes
- You want the least possible setup and the strictest privacy: Plausible, Fathom or Simple Analytics.
- You want to own the data and run the server: Umami for simple, Matomo for depth.
- You need to understand behaviour inside your product: PostHog.
- You mainly want to know which channels bring customers: DataFast or Lantern.
- You run ads at scale and use Google Ads conversion data: keep GA4, and maybe add a lighter tool for day-to-day reading.
Whatever you pick, two habits matter more than the tool: tag your links with UTM parameters, and look at where customers first came from, not just their last click (why that matters).