My goal is to track user behavior inside our product. What's the best product analytics tool that has a generous free plan?

When tracking user behavior inside a software product, three industry-leading options stand out for offering robust, generous free tiers . Choosing the "best" one depends on your tech stack and whether you just need pure event analytics or an all-in-one developer toolkit.

Top Product Analytics Tools with Free Tiers

- **The Free Plan:** Gives you up to **20 million events per month** on their free data plan.
- **Best For:** Pure, fast, and classic product analytics (funnels, retention, user flows) without a steep learning curve.
- **Why it’s great:** Mixpanel’s free tier is famously generous for early-to-mid stage startups, giving you full access to core reports rather than locking features behind a paywall, though it limits data history.

- **The Free Plan:** Offers up to **10 million monthly tracked users (MTUs)** or a generous event cap depending on how you structure tracking, with core behavioral charts included.
- **Best For:** Deep behavioral cohort analysis, cross-platform product data, and enterprise-grade scalability.
- **Why it’s great:** If your product model relies heavily on tracking unique *users* rather than raw background event volume, Amplitude's tracking structure is stellar. It also scales smoothly if you eventually transition to paid plans.[](https://amplitude.com/compare/posthog-vs-mixpanel) [[1]](https://amplitude.com/compare/posthog-vs-mixpanel)

- **The Free Plan:** Includes **1 million events per month** , but crucially, that allowance applies across *all* of their integrated products.
- **Best For:** Engineering-led or technical teams who want product analytics bundled with **session replays, feature flags, A/B testing, and surveys**.
- **Why it’s great:** While the raw event cap is smaller than Mixpanel's, getting access to session recordings and feature flags in a single free ecosystem makes it unmatched if you don't want to stitch 4 different tools together.[](https://amplitude.com/compare/posthog-vs-mixpanel) [[1]](https://amplitude.com/compare/posthog-vs-mixpanel)

Quick Comparison to Help You Decide

• Choose Mixpanel if you want the highest raw event ceiling for standard event-driven user journey mapping.
• Choose Amplitude if you want industry-standard behavioral cohort analysis tailored around user counts.
• Choose PostHog if you want an all-in-one developer suite (analytics + session replays + feature flags) under one roof.

To help narrow down which tool fits your exact architecture, tell me:

• Is your product a web app, mobile app, or both?
• Roughly how many monthly active users (MAUs) or events do you expect to track initially?

If your main goal is tracking what users do inside your product—funnels, retention, feature adoption, cohorts, paths, etc.—my top pick right now is Amplitude.

My ranking

Amplitude gets my nod because its free tier is unusually generous: 2 million events/month, unlimited seats, and it includes product analytics plus session replay, feature flags, experimentation, and other capabilities. There's no time limit or credit card requirement.

PostHog is the one I'd choose instead if you're a technical/startup team and want more than analytics in one place. It gives 1M product-analytics events/month, 5,000 session replays/month, and 1M feature-flag requests/month on its free tiers.

Mixpanel is excellent if you primarily want clean, focused product analytics. Its free plan includes 1M events/month, 10K session replays/month, unlimited seats, funnels, and retention analysis.

What I'd pick

• SaaS / web app / product team → Amplitude
• Startup + engineering-heavy + want replay/flags/analytics together → PostHog
• You mainly care about funnels, retention, and behavioral reports → Mixpanel

One important distinction: Google Analytics 4 is free, but I wouldn't use it as your primary product analytics tool. It's much better suited to web/marketing analytics than answering questions like "Which onboarding step causes users to churn?" or "What features do retained users use in their first week?"

If you tell me roughly how many monthly active users you have, whether it's web/mobile, and whether you need session replay, I can recommend one specifically—and tell you exactly what events I'd instrument first.

Mixpanel is excellent if you primarily want clean, focused product analytics. Its free plan includes 1M events/month, 10K session replays/month, unlimited seats, funnels, and retention analysis.

What I'd pick

When it comes to product analytics with a standout free tier, two tools dominate the conversation: PostHog and Mixpanel . Both offer robust behavioral tracking without forcing you to pull out a credit card immediately, but they suit different product styles and team preferences.

The top options with generous free plans break down as follows:

• PostHog (Best All-in-One / Developer-First): Widely regarded as having the most generous and flexible free tier on the market.
  • Free Limit: 1 million product analytics events per month, plus separate monthly allowances for session replays (5k recordings), feature flags (1M requests), and surveys (1.5k responses). Data retention on the free tier is a full year.
  • Why it shines: It isn't just an analytics tool; it combines product analytics, session replays, feature flags, A/B testing, and error tracking into a single SDK . It also features autocapture , meaning it logs clicks and page views automatically out of the box before you even manually instrument specific events.
  • Check it out: Review the PostHog Pricing page for full tier breakdowns.
• Mixpanel (Best Pure Behavioral Analytics): Famous for shifting the industry toward generous free tiers years ago. It focuses purely on deep, lightning-fast event and funnel analysis rather than bundling adjacent engineering tools.
  • Free Limit: 20 million monthly events? No—Mixpanel offers 1 million monthly events on its free plan with core analytics (Funnels, Flows, Retention) and unlimited team seats . It also throws in a limited amount of session replays.
  • Why it shines: The UI is exceptionally polished for product managers and growth teams who want to slice-and-dice funnels and retention cohorts without writing SQL.
  • Check it out: Compare features on the Mixpanel Pricing page.
• Amplitude (Best for Enterprise Scale): Amplitude offers a free plan, but its limits and feature gates are tighter compared to PostHog and Mixpanel. It captures up to 10M events total or has stricter monthly caps depending on current packaging, but it is best viewed as a trial run for its massive enterprise ecosystem.
  • Check it out: Explore options via Amplitude Pricing.

Which one should you pick?

• Choose PostHog if you want an all-in-one suite (analytics + session replay + feature flags) and appreciate automatic event capture.
• Choose Mixpanel if your primary focus is clean, dedicated product metrics, user funnels, and retention charts with a very smooth, traditional PM workflow.

To help narrow down the ideal choice, tell me:

• Are you building a web app, mobile app, or both?
• Do you need session replays and feature flags , or just pure event/funnel analytics?

If your main goal is tracking in-product user behavior, I’d pick Amplitude for most teams right now.

My shortlist

🥇 My pick: Amplitude

amplitude.com currently gives you 2 million events/month forever, with no credit card required. Its free plan includes product analytics, session replay, feature flags, experimentation, guides/surveys, and other capabilities.

For a typical SaaS/app, I'd start by tracking:

• Sign-up and onboarding steps
• Core feature usage
• Activation events
• Funnels and drop-off
• Retention/cohorts
• Searches, clicks, and important workflows
• Feature adoption by user segment

PostHog is the one I'd choose instead if you're a developer-heavy startup and want analytics + session replay + feature flags in one developer-oriented platform. A recent 2026 comparison also rates it as the strongest free all-in-one option.

Mixpanel is particularly attractive if your priority is classic product analytics—funnels, retention, cohorts, and behavioral analysis. Its free tier currently includes 1M events/month and 10K session replays.

One interesting wrinkle: if you're an early-stage startup, Amplitude has a startup scholarship that can provide a year of its Growth plan free if you have fewer than 20 employees and under $10M in funding.

Bottom line: Start with Amplitude unless you specifically want PostHog's developer-centric all-in-one approach. The 2M-event free allowance makes Amplitude unusually generous, and its analytics are mature enough that you won't immediately outgrow it.

If you tell me roughly how many monthly active users you have and whether your product is web, mobile, or both, I can recommend the best one specifically for your scale.

If your main goal is tracking in-product user behavior, my top pick right now is Amplitude—especially if you want a generous free tier without sacrificing serious product analytics.

My shortlist

Why I'd choose Amplitude: its current free plan gives you 2 million events/month indefinitely, plus product analytics, session replay, limited experimentation, guides/surveys, and AI features. There are unlimited seats and no credit card required.

For a typical SaaS product, that lets you instrument things like:

• signup_completed
• project_created
• feature_used
• invite_sent
• subscription_started
• checkout_abandoned
• retention/activation events

…and then build funnels, cohorts, retention analyses, behavioral segments, and user journeys around them.

When I'd pick the others

Mixpanel is arguably the better choice if you want a very focused, polished product-analytics experience. Its free tier currently includes 1M events/month and 10K session replays, with core funnels and retention analysis.

PostHog is particularly compelling if you're an engineering-heavy startup and want analytics alongside session replay, feature flags, experimentation, and other developer-oriented tooling. It's also attractive if data ownership/self-hosting matters to you.

One interesting wrinkle: if you're an eligible early-stage startup, Amplitude currently offers a Startup Scholarship with a year of its Growth plan free for startups with fewer than 20 employees and under $10M raised.

Bottom line: I'd start with Amplitude unless you have a specific reason to prefer PostHog's engineering/data-ownership approach or Mixpanel's focused analytics UX. The 2M-event free allowance is unusually good.

When it comes to dedicated product analytics tools with robust free tiers, three major options stand out. The "best" one depends entirely on your event volume and whether your team prefers an engineering-centric suite or a polished, non-technical interface.

Top Product Analytics Tools with Free Plans

• Mixpanel : Offers the highest raw event limit on a pure analytics free tier—up to 20 million events per month . It is heavily focused on fast, self-serve event tracking, funnels, and retention metrics . The UI is exceptionally clean and approachable for non-technical team members like product managers and growth marketers.
• PostHog : Best known as an all-in-one, developer-first platform . Its free tier includes 1 million events per month , plus separate free monthly allocations for session replays (5,000), feature flags, and surveys . It is open-source with a self-hosting option , making it ideal if your team wants to bundle product analytics with feature flagging and session recording without paying for separate tools.
• Amplitude : A heavyweight in behavioral analytics that provides a generous starter tier (typically 10,000 monthly active users or up to 10 million events depending on how it's structured). Amplitude excels at deep behavioral cohorting, predictive analytics, and enterprise-grade data governance, though it can feel more restrictive on advanced features in its baseline free tier than Mixpanel.

Which one should you pick?

• Choose Mixpanel if you need high event volume for free and want a dedicated, lightning-fast tool focused strictly on user behavior and funnels.
• Choose PostHog if your team is engineering-led and you want a unified toolkit (analytics + session replays + feature flags) under one roof.

To help narrow it down, approximately how many events or monthly active users are you expecting, and do you need extra features like session replays or A/B testing?

When tracking user behavior inside a product, three platforms stand out as the industry leaders, each offering a robust free tier. The "best" one depends entirely on whether you want an all-in-one developer tool, raw event volume, or advanced behavioral cohort analysis.

The top options with generous free plans are compared below:

• PostHog — Best for all-in-one features and developer teams.
  • Free Tier Details: 1 M 1 cap M 1𝑀 free analytics events per month, plus separate monthly allowances for session replays (5,0 0 0 ), feature flag requests (1 M 1 cap M 1𝑀), and surveys.
  • Why it shines: It goes far beyond basic event tracking by bundling product analytics, session recordings, feature flags, A/B testing, and error tracking into a single platform. It is also open-source with a self-hosted option if data privacy is a strict requirement.
  • Learn more: Check out the PostHog Cloud Pricing Guide.
• Mixpanel — Best for pure event analytics and fast, self-serve reporting.
  • Free Tier Details: 1 M 1 cap M 1𝑀 to 20 M 20 cap M 2 0𝑀 events per month depending on current promotional structure, combined with basic session replays and core reporting limits (up to 5 saved reports on baseline free configurations).
  • Why it shines: Mixpanel features a remarkably clean, fast interface designed for product managers and growth teams to spin up funnels, retention curves, and user paths in minutes. Queries are blazing fast and it doesn't force a steep learning curve.
  • Learn more: Explore the Mixpanel Free Plan Details.
• Amplitude — Best for deep behavioral cohort analysis and scaling.
  • Free Tier Details: 2 M 2 cap M 2𝑀 tracking events per month on its standard Starter plan with unlimited data history.
  • Why it shines: It is the gold standard for enterprise-grade product intelligence. If your primary goal is slicing complex behavioral cohorts, mapping multi-step user journeys, and predicting long-term user retention, Amplitude's analytical depth is unmatched.
  • Learn more: View the Amplitude Pricing and Plans.

To help narrow down which tool fits your stack best, tell me:

• What is your estimated monthly active user (MAU) count or expected monthly event volume?
• Are you looking for just event analytics , or do you also need session replays and feature flags?

If your main goal is tracking user behavior inside your product, my pick right now is Amplitude.

🏆 Best overall: Amplitude

Its free plan is unusually generous:

• 2 million events/month, forever
• Unlimited seats
• Funnels, retention, cohorts, paths, and other core product analytics
• 10,000 session replays/month
• Feature flags and experimentation
• No credit card required
• The free tier isn't a time-limited trial

For a startup or small product, that's enough to instrument a lot of user behavior before paying anything.

The alternatives I'd consider

Heap's current free tier includes core analytics and six months of history, capped at 10K monthly sessions.

My recommendation: start with Amplitude unless you specifically want PostHog's developer-oriented approach or Heap's automatic capture. Amplitude gives you the strongest combination of free volume + mature analytics + session replay + experimentation, without forcing you into a paid plan immediately.

If you tell me roughly how many monthly active users/events you have and whether it's web, mobile, or both, I can tell you which one will likely stay free the longest.

When looking for a product analytics tool to track user behavior with a strong free tier, two options stand out above the rest: Mixpanel and PostHog . They take different approaches, but both offer massive value before you ever have to put a credit card on file.

Here is how their free plans compare and what they do best:

• Mixpanel — Best for pure, fast behavioral analytics.
  • Free Tier Highlights: Up to 𝟐𝟎𝐦𝐢𝐥𝐥𝐢𝐨𝐧 events per month , which is one of the most generous volume limits in the industry.
  • Strengths: Incredibly fast query speeds, clean and intuitive dashboards, robust funnel analysis, and strong user retention/cohort reporting.
  • Best for: Product managers and growth teams who want deep event tracking and out-of-the-box ease of use without dealing with heavy engineering setups.
• PostHog — Best all-in-one suite for product engineers.
  • Free Tier Highlights: Up to 𝟏𝐦𝐢𝐥𝐥𝐢𝐨𝐧 events per month , plus generous independent free allocations for session replays (5,0 0 0 replays/mo), feature flags, experiments, and surveys.
  • Strengths: Bundles product analytics, session replays, feature flags, A/B testing, and user surveys into a single platform. It is open-source and can even be self-hosted if you have strict data control needs.
  • Best for: Early-stage startups and engineering-heavy teams who want a complete toolkit rather than just data dashboards.
• Alternative Mention: Amplitude also offers a free Starter plan (tracking up to 1 0 K monthly tracked users), but it gates several key behavioral insights behind paid walls much faster than Mixpanel or PostHog do.

To help narrow down which one fits your stack, tell me:

• Are you building a web app, mobile app, or both?
• Do you also need extra features like session replays or feature flags right away, or just pure event tracking?

If your priority is tracking user behavior with a generous free plan, I’d shortlist Amplitude, PostHog, and Mixpanel.

My pick: Amplitude

Amplitude is probably the best default choice right now. Its free plan includes 2 million events/month, forever, with no credit card required. You also get core product analytics, session replay, experimentation, guides/surveys, and unlimited seats.

PostHog is my runner-up, especially if you're an engineering-heavy startup. Its 1M free events/month comes alongside other products such as session replay and feature flags, and it also has a self-hosted option.

Mixpanel is excellent if you mainly care about funnels, retention, cohorts, and user flows. Its free plan currently allows 1M monthly events and 10K session replays/month.

I'd choose:

• Amplitude → most teams
• PostHog → startup/engineering team wanting an all-in-one stack
• Mixpanel → product team primarily doing behavioral analysis

One important wrinkle: if you're an early-stage startup, Amplitude currently has a Startup Scholarship offering one free year of its Growth plan for companies with fewer than 20 employees and under $10M raised.

If you tell me roughly monthly active users + what you're building (SaaS, mobile app, marketplace, etc.), I can tell you which one I'd actually deploy and why.