Short answer: if you want a different analytics tool, Mixpanel and Amplitude are the most direct PostHog alternatives, both with free plans. If what you need is in-product onboarding guides, look at Userpilot. And if PostHog already collects everything but nobody has time to find out why trials don't convert, switching won't fix it: what's missing is someone who reads the data for you. That is where Holdy fits, on top of PostHog, without replacing it.
What PostHog does well
PostHog bundles product analytics, session replay, feature flags, experiments and surveys in one open-source platform with usage-based billing. The first 1 million analytics events a month are free, which covers most SaaS products in their first years. For technical teams, the price and flexibility are hard to beat.
The reasons people look for alternatives are usually different: building and reading funnels, cohorts and retention takes time from someone who understands data, and small self-serve product teams rarely have that person. The data is there, but the question "why didn't this trial become a customer?" stays unanswered.
Quick comparison
| Tool | Best for | How it charges | Watch out for |
|---|---|---|---|
| PostHog | Analytics, replay and flags in one cheap platform | Usage-based; 1M analytics events free per month | Someone has to build and read the analyses |
| Mixpanel | Funnels and retention that are faster to set up | Per event; free up to 1M events per month | No guides or replay as a focus |
| Amplitude | Deep product analytics and experiments | Per event since July 2026; free up to 2M events per month | Steep learning curve |
| Userpilot | Onboarding guides with analytics attached | From US$299/month up to 2,000 active users | Cost grows with the user base |
| Holdy | Finding what blocks activation and conversion, and shipping the measured fix | Free, no card; Launch US$29/month up to 100 customer companies | Does not replace session replay or feature flags |
Prices above are the ones each company published in October 2026. Check their pricing pages before deciding.
1. Mixpanel: if you want funnels and retention with less setup
Mixpanel is the reference for event-based analytics. The free plan goes up to 1 million events a month, and the Growth plan starts at zero and charges by volume above that. Many teams find funnels and retention faster to build in Mixpanel than in PostHog. Still, the person asking the question and interpreting the answer is your team.
2. Amplitude: if product analytics is a discipline on your team
Amplitude has the deepest analysis in this list, with experiments and advanced cohorts. In July 2026 it moved from monthly-tracked-user pricing to event-based pricing, with a free plan of up to 2 million events a month and AI agents on every tier. It rewards rigor: it pays off when someone owns the instrumentation and the reports. For a three-person team without an analyst, it tends to be more tool than you need.
3. Userpilot: if what's missing is guiding the user inside the product
Userpilot combines in-product guides, checklists and surveys with usage analytics. The Starter plan begins at US$299 a month for up to 2,000 active users. It helps you show the user the way, but you still decide which guide to build and where.
4. Holdy: if you have the data and need to know what to change
Holdy is not another charting tool. It reads the events you already collect, through its own SDK or by connecting PostHog in one click, and finds on its own where activation and conversion stall: the step where trials stop, the accounts that went cold before paying, the page that brings visits and no sign-ups. Each finding becomes an opportunity with the evidence, the affected accounts and the MRR at stake.
Then it delivers the improvement ready for review: a hint, question or checklist for the right accounts through the SDK, a message by WhatsApp or email, or a draft pull request on GitHub. Every change goes out with a holdout group, and Holdy measures the difference in behavior and in the MRR that converted or churned. It does not record sessions or manage feature flags; if that's what you use PostHog for, keep PostHog for it.
Replace PostHog or add to it?
For many teams the answer is to add. PostHog keeps collecting and holding the history, and Holdy reads that data to say what to change and to measure the result. Replacing only makes sense if the problem is PostHog itself, such as the interface or the cost at high volume. If the problem is that nobody has time to read the data, another analytics tool will meet the same fate.
How to choose in 3 questions
- Does someone on the team build and read analyses every week? If yes, Mixpanel or Amplitude may give you more than PostHog. If not, you need something that finds the problems on its own.
- Is the bottleneck understanding the problem or guiding the user? Guiding: Userpilot. Understanding and deciding what to change: Holdy.
- Do you need to prove the change brought revenue? If yes, look for something that compares who saw the change with who was held out, in MRR, not only in clicks.
Want to know what your PostHog data is already showing?
Holdy finds what blocks activation and conversion, ships the improvement ready for review, and measures the impact on retention and revenue against a holdout group. Start on the Free plan, no card.