PostHog gives away a million events a month. Its free plan is rarely what pushes people out. The trouble starts later, when a second product gets switched on or a signed-in app starts sending identified events. This list covers seven alternatives that each have a free plan, starting with ours, and says what every free plan holds.
We make Spreelytics, so read our entry with that in mind. For every tool, we say what it does better than we do. Features and free plans were checked against each vendor's own pages in October and November 2026, and they change, so confirm before you move.
The short answer
Spreelytics suits teams that mostly read traffic, signups and revenue, and it is free up to 1 million events a month. For replay, flags and experiments on a free plan, Amplitude and Mixpanel come closest to PostHog. A team that tests every release will like Statsig. If recordings and heatmaps are all you need, Microsoft Clarity is free with no traffic limit, and Umami is the easy one to host yourself.
Why people look for a PostHog alternative
PostHog is a set of over ten products under one bill. Product analytics, web analytics, session replay, feature flags, experiments, surveys and a data warehouse each have a meter and a free allowance of their own, so switching on three products means watching three meters.
Events tied to a signed-in person cost extra. In our PostHog pricing breakdown, 10 million anonymous events came to $324.40 a month, and the same 10 million came to $1,080 once every event belonged to an identified person. The free plan has one project, and events past the million are dropped for good.
If you open PostHog only to check traffic, sources and signups, web analytics is one product among many, and you build most reports yourself. Revenue attribution is still in beta.
PostHog is open source, you can host it yourself, and flags, experiments, surveys and replay made for debugging share one SDK. Some tools below match one or two of those, and none matches all of them. Our Spreelytics vs PostHog page goes row by row.
At a glance
| Tool | Best for | Free plan | Replay on the free plan | Flags and experiments | Self-host |
|---|---|---|---|---|---|
| Spreelytics | Analytics joined to traffic sources and revenue | 1M events a month, 13 months of data | No, on Growth | No | No |
| Mixpanel | Deep event analysis | 1M events, 5 saved reports per seat | 10k replays | Yes | No |
| Amplitude | The widest free suite | 2M events, 10 saved charts | 10k sessions | Yes | No |
| Statsig | Experiments first | 2M events a month | 50k replays | Yes | Your warehouse, on Enterprise |
| Heap | Every click recorded, with no tracking plan | 10k sessions, 6 months of data | No, paid add-on | Reads other tools' tests | No |
| Umami | An easy self-host or a small free cloud | 100k events, 1 website | Self-hosted only | No | Yes |
| Microsoft Clarity | Free replay and heatmaps | Free, no traffic limit | Yes | No | No |
1. Spreelytics
One script tag, one stream of events. Sources, pages, referrers and all five UTM fields sit on ready-made pages, and funnels, retention cohorts, journeys, segments and person timelines read those same events. Nothing is sampled.
Connect Stripe, Paddle, Polar or Lemon Squeezy and each payment is credited to the channel that brought the buyer, last-touch or linear, over a window of 1 to 90 days. MRR, ARR and refunds get a Revenue page. New projects start cookieless, and one first-party cookie can be switched on per project. There is nothing to host, and an MCP server on every plan lets Claude, ChatGPT, Cursor or VS Code read the data and build reports.
Where others win: we have no feature flags, experiments, surveys or heatmaps, no self-hosting, and the code is closed. Session replay needs Growth. It covers websites only and captures no console or network logs.
Pricing: free up to 1 million events a month, forever, with unlimited projects, team members and dashboards. That covers every feature except session replay and the in-app AI assistant, and keeps 13 months of data. Growth adds both and keeps five years, from $59 a month for 1 million events to $339 for 10 million, and an event costs the same whether the person is known or not. See pricing.
2. Mixpanel
The nearest match for PostHog's product analytics. Funnels, retention and flows go deep, and session replay, feature flags and experiments are on every plan, Free included. It has native mobile SDKs and data regions in the US, the EU or India.
Free caps saved reports at five per seat and limits cohorts. Pass a million events in a month on Free and your reports are blocked until the next month starts or you upgrade.
Pricing: free up to 1 million events and 10,000 replays a month. Growth charges per event after that, $140 a month at 1.5 million and $1,176 at 10 million, billed monthly. See Mixpanel pricing and Spreelytics vs Mixpanel.
Choose it if your questions are about what people do inside the product, on the web and in mobile apps.
3. Amplitude
The biggest free bundle here. Its Starter plan takes 2 million events a month and adds 10,000 session replays, unlimited feature flags, one live experiment, a limited set of in-app guides and surveys, and AI agents. Ten attribution models, a data-driven one among them, put ad spend beside revenue.
Free keeps ten saved charts per account. Behavioural cohorts start on Plus, and an account that goes over its free limit three times is blocked from viewing its data.
Pricing: free up to 2 million events, with a year of data. Plus is priced by volume, $94 a month at 3 million and $720 at 10 million, billed monthly. See Amplitude pricing and Spreelytics vs Amplitude.
Choose it if you want most of PostHog's surface on one free plan and expect to grow into paid.
4. Statsig
Feature flags and A/B tests come first at Statsig, with product analytics, web analytics and session replay built around them, and results carry advanced statistics. On Enterprise its stats engine can run inside your own data warehouse. Statsig has been part of Amplitude since May 2026 and is still sold under its own name.
It measures how a release moves revenue. Crediting a sale to a channel is outside its scope, and referrer and UTM reports are charts you build.
Pricing: the free Developer plan takes 2 million events and 50,000 session replays a month, with unlimited flag checks, experiments and a year of analytics, then paid plans. See Spreelytics vs Statsig.
Choose it if experiments are why you picked PostHog.
5. Heap
Heap records every click and page view from the moment its snippet goes in, so an event you name months later already has its history. It is now part of Contentsquare. SDKs cover iOS, Android, React Native and Flutter.
Free shows six months of history and Growth a year, and replay and heatmaps are add-ons on Pro and Premier.
Pricing: a free plan of 10,000 sessions, then paid plans. See Spreelytics vs Heap.
Choose it if you would rather not plan tracking up front.
6. Umami
A small open-source tool under the MIT licence. It runs on one container and a database, the easiest self-host in this list. Since version 3 it has journeys, retention, segments, revenue with first or last-click attribution, visitor profiles and session replay.
Hobby, the free cloud plan, takes 100,000 events on one website, keeps six months and leaves out the API and MCP. Replay is free on your own server and sits on Business in the cloud.
Pricing: free to self-host. Cloud Hobby is free, and Pro is $20 a month for a million events. See Spreelytics vs Umami.
Choose it if self-hosting was the reason you chose PostHog and you want something lighter to run.
7. Microsoft Clarity
Free session recordings and heatmaps from Microsoft, with no traffic limit. Copilot sums up recordings in plain language. Its AI Visibility pages show how often AI answers cite your pages, which we cannot see.
Funnels count sessions instead of people, there is no retention or path report, and most recordings are kept for 30 days. Revenue shows up only as a purchase rate on Shopify sites.
Pricing: free. See Spreelytics vs Microsoft Clarity.
Choose it if replay was the PostHog product you opened most, and you will pair Clarity with an analytics tool.
Named often, but no free cloud plan
OpenPanel, Plausible and Matomo turn up in most PostHog alternative lists. All three are open source and free to self-host. Their clouds start with a trial, 30 days for OpenPanel and Plausible and 21 for Matomo, so they miss the free-plan question. If you will run a server anyway, OpenPanel is the one of the three built as a product analytics tool, with funnels, retention and session replay. See Spreelytics vs OpenPanel.
How to choose
- You use flags and experiments every week: stay on PostHog, or try Statsig, Amplitude or Mixpanel. All three include them free.
- You mostly check traffic, sources and signups: Spreelytics, with revenue by channel on the free plan.
- You want the biggest free event allowance: Amplitude or Statsig, at 2 million a month.
- Your data has to stay on your servers: PostHog self-hosted, or Umami.
- You only watch recordings: Microsoft Clarity.
Plenty of teams run two tools, with PostHog keeping the flags and Spreelytics covering acquisition and revenue. For the wider field, see the best product analytics tools.