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

If your goal is tracking in-product user behavior and you want a generous free plan, my default pick is PostHog.

My shortlist

PostHog's big advantage is that it combines product analytics, session replay, feature flags, experiments, and more rather than making you assemble several tools. Its pricing is also usage-based, with 1M product-analytics events and 5K recordings free each month.

Amplitude currently has the largest basic event allowance of these three—2M events/month forever, with unlimited seats and session replay included.

Mixpanel gives you 1M events/month, 10K session replays, funnels and retention analysis, and unlimited seats on its free tier.

What I'd choose

• Early-stage SaaS / startup: PostHog
• Product manager-heavy team doing sophisticated funnels/cohorts: Amplitude
• You primarily want clean event/funnel/retention analytics: Mixpanel
• You want session recordings + analytics + feature flags in one place: PostHog

One important distinction: Google Analytics 4 is free, but I wouldn't choose it for this use case. It's primarily web/traffic analytics rather than purpose-built product analytics.

My pick: PostHog, unless your team already knows Amplitude. The breadth of what you get without paying makes it particularly attractive when you're still figuring out what user behavior actually matters.

If you tell me your product type (SaaS/mobile/marketplace/etc.), approximate monthly active users, and whether you need session replay, I can give you a much more specific recommendation.

When tracking user behavior, the "best" tool depends heavily on your team's workflow (product vs. engineering) and your data volume. Three industry-leading product analytics platforms offer genuinely generous, feature-rich free tiers:

• Amplitude
  • Free Tier Limit: $0/month for up to 2 million events per month and unlimited seats.
  • Best For: Product and growth teams wanting deep out-of-the-box behavioral data.
  • Why it’s great: Amplitude gives you a massive monthly event allowance (double most competitors), plus unlimited team seats, session replays, and built-in experimentation tools without requiring a credit card.
• PostHog
  • Free Tier Limit: $0/month for up to 1 million events and 5,000 session recordings per month.
  • Best For: Engineering-led or developer-heavy teams.
  • Why it’s great: It is an all-in-one platform. Instead of just basic analytics, the free tier includes feature flags, A/B testing/experiments, and session replays. If you outgrow it, it shifts to a transparent pay-as-you-go model rather than forcing an expensive tier jump.
• Mixpanel
  • Free Tier Limit: $0/month for up to 1 million events and 10,000 session replays per month.
  • Best For: Fast, intuitive funnel and retention analysis.
  • Why it’s great: Mixpanel’s UI is famously fast and clean. Their free plan offers unlimited seats and robust core reporting (Insights, Funnels, Flows, Retention), though you hit saved report limits per seat faster than with Amplitude.

Summary Recommendation

• Choose Amplitude Pricing if your primary goal is maximizing pure event volume on a free plan.
• Choose PostHog Pricing if you want product analytics bundled with session replays and feature flags in a developer-friendly tool.

If you tell me your estimated monthly event volume and whether your team prefers a product-focused or developer-focused interface, I can help you pick the exact platform.

If your goal is tracking user behavior inside your product (events, funnels, retention, feature adoption, user journeys), I’d shortlist these:

Toolradar Amplitude## My default recommendation

Pick PostHog if you are an early-stage SaaS/startup team. It gives you the most "one tool does everything" value: analytics, session recordings, feature flags, and experimentation. That means you can answer questions like:

• Where do users drop off in onboarding?
• Which features correlate with retention?
• What did a user actually do before they churned?
• Did a new feature change behavior?

Toolradar Amplitude## Pick Mixpanel instead if:

• Your main need is funnels, cohorts, retention, and product metrics
• Your product managers will live in dashboards
• You want the cleanest analytics experience

Mixpanel is often the easiest for non-technical teams to adopt because its reports are very focused on answering product questions quickly.

Pick Amplitude instead if:

• You expect a larger product analytics function
• You need sophisticated segmentation, governance, and cross-team analytics
• You are building toward enterprise scale

Amplitude is strong when analytics becomes a core company capability rather than just a startup feedback loop.

A practical setup I’d use

For a new product:

1. Define a small event taxonomy:

• User Signed Up
• Completed Onboarding
• Created Project
• Invited Teammate
• Used Feature X
• Subscribed
• Cancelled

2. Track:

• Activation funnel
• Weekly/monthly retention
• Feature adoption
• Conversion points
• Churn signals

3. Avoid tracking every click immediately. A clean event model is more valuable than thousands of noisy events.

Short answer:

• 🥇 Best overall free choice: PostHog
• 🥈 Best pure product analytics: Mixpanel
• 🥉 Best for scaling product teams: Amplitude

If you tell me your product type (SaaS, mobile app, marketplace, AI app, etc.), monthly active users, and whether you need session replay, I can narrow this down.

When tracking user behavior inside a product, the three undisputed industry leaders with robust free tiers are PostHog, Amplitude , and Mixpanel . Choosing the "best" one depends heavily on your tech stack, your team's technical skill, and whether you need an all-in-one suite or dedicated product analytics.

1. PostHog (Best All-in-One & Most Generous for Developers)

• The Free Allowance: Includes a massive monthly free tier (typically 1 million product analytics events, 5,000 session replays, and 1 million feature flag requests free every month).
• Why it's great: It is built as an open-source, all-in-one platform. Instead of just product analytics (funnels, retention, trends), it natively bundles session replays, feature flags, A/B testing/experiments, error tracking, and even surveys into one dashboard.
• Best for: Startups, product engineers, and technical teams who want to consolidate multiple tools (like Optimizely or Hotjar + Mixpanel) under a single roof without hitting a paywall early.
• Learn more: Explore features and limits directly on the PostHog Platform.

2. Amplitude (Best for Deep Product Intelligence & Scale)

• The Free Allowance: Gives you up to 2 million events per month with access to their core analytics platform [0.5M - 2M depending on promotional tiers] and robust behavioral charting.
• Why it's great: Amplitude is a gold standard for pure product analytics. Their behavioral engine handles complex cross-funnel analysis, user paths, and predictive cohorts better than almost anyone. They also include limited access to session replays and experimentation on the free tier.
• Best for: Product managers and data-driven teams who need deep, uncompromised behavioral analytics and user segmentation without immediate budget approval.
• Learn more: Check out their exact tier breakdown at Amplitude Pricing.

3. Mixpanel (Best User Interface & Fast Setup)

• The Free Allowance: Offers up to 20 million data points (events) per month on their free starter plan, which is numerically the highest event volume limit.
• Why it's great: Mixpanel's UI is lightning-fast, highly visual, and exceptionally user-friendly for non-technical team members (like marketers or success teams) to build custom retention and funnel reports.
• Best for: Teams with high event volumes (lots of granular tracking clicks/actions) who want a clean, collaborative interface and quick time-to-value.
• Learn more: Review what's included via Mixpanel Pricing.

Quick Comparison to Help You Decide

To help narrow down the right choice, tell me:

• Is your product a web app, mobile app, or both?
• Do you also need extra features like session replays or A/B testing , or just pure event analytics?

When tracking user behavior inside a product, the three undisputed industry leaders—PostHog, Amplitude , and Mixpanel —each offer remarkably generous free tiers. However, the "best" one depends entirely on your tech stack, your need for bundled tools (like session replays or feature flags), and your monthly event volume.

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

• PostHog — Best All-in-One & Most Generous Overall
  • Free tier limit: $1 million free events per month (plus 5,000 free session recordings and 1 million feature flag requests).
  • Why it shines: It is an open-source, all-in-one platform that bundles product analytics, web analytics, session replays, feature flags, experimentation (A/B testing), and error tracking into a single dashboard.
  • The catch: It leans slightly more developer-focused, and if you scale past the free tier, pricing can scale quickly based on usage, though the initial allowance covers most early-to-growth-stage products entirely. Get started on the PostHog Website.
• Amplitude — Best for Deep Behavioral Data & Scale
  • Free tier limit: 2 million events per month with access to their core analytics platform.
  • Why it shines: Amplitude offers double the monthly event volume on its free plan compared to others. It gives you full access to behavioral cohorts, retention analysis, funnels, and even newer AI features without locking core analytical power behind a paywall.
  • The catch: While great for pure event-based product analytics, adding extra tools like advanced session replays or experimentation can push you into paid add-ons or tiers later on. Explore details on the Amplitude Website.
• Mixpanel — Best for Clean, Fast Event Exploration
  • Free tier limit: 20 million data points (events) per month on their starter tier.
  • Why it shines: Historically famous for dropping its traditional rigid pricing walls, Mixpanel's free tier is massive in terms of raw volume allowance for early teams. The UI is lightning-fast for ad-hoc funnel and retention queries.
  • The catch: It focuses strictly on core product analytics. If you want session replays, feature flags, or data warehousing syncs bundled natively, you'll need external tools or paid upgrades. Check it out via the Mixpanel Platform.

To help narrow down which of these fits your exact setup, tell me:

• Is your product primarily a web app, mobile app (iOS/Android), or both?
• Do you also need session replays and A/B testing bundled in, or just event tracking?

If your goal is specifically tracking user behavior inside a product—events, funnels, retention, cohorts, paths, feature usage—I’d shortlist PostHog, Mixpanel, and Amplitude.

My pick: PostHog

posthog.com is probably the best value-for-money starting point, especially for an engineering-led startup.

Current published pricing confirms that Mixpanel's free tier includes 1M events/month, 10K session replays, unlimited seats, funnels and retention. Mixpanel Mixpanel Amplitude currently offers 2M events/month forever, 10K session replays, unlimited seats, and additional product capabilities on its free plan.

How I'd choose

Pick PostHog if you want:

• Product analytics
• Session recordings
• Feature flags
• A/B testing
• One platform rather than stitching tools together
• The option to self-host

Pick Mixpanel if you want:

• The cleanest, most focused product-analytics experience
• Excellent funnels, retention and behavioral analysis
• Something your PMs/marketing team can use without much engineering help

Pick Amplitude if you want:

• More sophisticated product analytics as you scale
• Strong cohort/retention analysis
• A platform you're likely to keep as your analytics organization gets more mature

One interesting wrinkle: Amplitude's current free tier is actually 2M events/month, so if "generous free plan" is your primary criterion, it's now extremely competitive.

My ranking for a new SaaS product:

1. 🥇 PostHog — best overall value/breadth
2. 🥈 Amplitude — best free tier + serious analytics
3. 🥉 Mixpanel — best focused analytics UX

If you tell me roughly how many monthly active users you have and whether it's web, mobile, or both, I can recommend one specifically and estimate when you'd hit the free-tier limit.

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. [1]

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. [1][2][3][4][5]
• 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. [1][2][3][4][5]
• 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. [1][2][3]

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.