Quick Verdict
Amplitude wins for teams that are serious about product analytics. Its cohort builder, retention charts, and native experimentation are still the category standard, and its governance tools keep your data clean as the org scales. Heap is the better pick only if you want to skip instrumentation entirely and start querying user behavior on day one — great for a scrappy early team, but you'll outgrow the noise fast. For any company past seed stage making real product decisions off this data, Amplitude is worth the setup cost.
The Two Contenders
Amplitude
The category-defining product analytics platform, used by thousands of product teams to track user behavior, measure retention, and run experiments. Amplitude built its reputation on rigorous cohort analysis and a tracking plan that forces teams to define events deliberately — which pays off once you need to trust the numbers in a board deck.
Heap
An autocapture-first analytics tool that records every click, tap, and form submission automatically, then lets you define events retroactively. No engineering sprint required to start seeing data. It's the fastest path from “zero instrumentation” to “dashboard with real user behavior,” which makes it popular with early-stage and resource-constrained teams.
Side-by-Side Comparison
| Feature | Amplitude | Heap |
|---|---|---|
| Starting Price | Free up to 50K MTUs, then custom | Free tier, paid plans custom quote |
| Event Tracking Model | Manual instrumentation + autocapture | Full autocapture by default |
| Behavioral Cohorts | Deep, best-in-class cohort builder | Solid, less granular than Amplitude |
| Session Replay | Add-on (Amplitude Session Replay) | Built-in on higher tiers |
| Retention Analysis | Industry-leading retention charts | Good, fewer customization options |
| Experimentation / A-B Testing | Native (Amplitude Experiment) | Requires third-party integration |
| Setup Speed | Slower — requires a tracking plan | Fast — capture everything, define events later |
| Data Governance | Strong taxonomy and governance tools | Weaker at scale, more noisy events |
| SQL / Warehouse Access | Available on higher tiers | Available on higher tiers |
| Best For | Product-led growth teams that need rigor | Early teams that want speed over structure |
Instrumentation: Tracking Plan vs Autocapture
This is the fundamental philosophical split between the two tools, and it drives almost every other difference.
Amplitude expects you to define a tracking plan — deciding upfront which events matter (signup, checkout, feature_used) and instrumenting them deliberately in code. It's more work upfront, but the payoff is clean, trustworthy data. When your VP of Product asks “what's our Day 30 retention for users who completed onboarding,” you know the event actually means what you think it means.
Heap captures every user interaction automatically from day one — no code changes needed to start collecting data. You can retroactively define events from historical data, which is genuinely useful when you don't yet know what you'll want to measure. The tradeoff is signal-to-noise: as your app grows, autocapture generates a flood of low-value events that make dashboards harder to navigate and event taxonomies messier.
Verdict: Heap wins for speed to first insight. Amplitude wins for data you can actually trust at scale.
Cohort Analysis & Retention
This is where Amplitude separates itself most clearly.
Amplitude's cohort builder lets you slice users by behavior sequences, not just static properties — "users who did A then B within 7 days but never did C." Combined with its retention curves and Compass/North Star tooling, it's built specifically for the workflow of a product team trying to find and double down on what drives retention.
Heap offers solid cohort and retention tools, but they're noticeably less granular. Sequential behavior analysis is more limited, and the retention charts don't offer the same depth of segmentation. It's good enough for a "are users coming back" gut check, not for the surgical analysis that drives a roadmap decision.
Verdict: Amplitude wins clearly. If retention analysis is core to how your team operates, this gap matters.
Experimentation & Session Replay
Amplitude has native A/B testing through Amplitude Experiment, tied directly to the same behavioral data you're already analyzing — no separate tool, no re-instrumenting events. Session replay is available as an add-on and integrates with the rest of the platform.
Heap includes session replay natively on higher tiers, which is a nice built-in for watching exactly how users struggle through a flow. But it has no native experimentation platform — you'll need to bolt on a separate A/B testing tool like Optimizely or LaunchDarkly and stitch the data back together yourself.
Verdict: Split. Amplitude wins on experimentation being native. Heap wins on session replay being included rather than an add-on.
Pricing & Scalability
Both platforms hide pricing behind a "contact sales" wall past the free tier, but the structure differs.
Amplitude Pricing
- - Starter: Free up to 50K tracked MTUs
- - Plus: from ~$49/mo
- - Growth: custom pricing
- - Enterprise: custom pricing
- * Priced on monthly tracked users
Heap Pricing
- - Free: limited sessions and history
- - Growth: custom pricing
- - Pro: custom pricing
- - Premier: custom pricing
- * Priced on sessions, not just users
Verdict: Roughly a wash — both gate real pricing behind sales calls, and both scale cost with usage. Amplitude's free tier is more generous for early-stage teams that just need to get started.
Where Amplitude Wins
Best-in-class cohort and retention analysis
Behavioral sequence cohorts and deep retention curves make it the tool product teams actually trust for roadmap decisions.
Native experimentation
Run A/B tests directly against your behavioral data without stitching together a separate testing tool.
Data governance that scales
A deliberate tracking plan keeps your event taxonomy clean, so numbers stay trustworthy as the team and codebase grow.
Where Heap Wins
Zero instrumentation to start
Drop in a script tag and you're capturing every interaction immediately — no engineering sprint required before you see your first insight.
Retroactive event definition
Define a new event today and see its full history immediately — because Heap already captured it, even before you knew you'd want it.
Built-in session replay
Watch exactly how users move through a flow without paying extra for an add-on module.
Final Verdict
This comes down to what stage your company is at and how much you trust your own data.
Choose Amplitude if you're past the earliest scrappy stage and product decisions are actually riding on this data. The cohort depth, retention analysis, and native experimentation compound into better decisions, and the tracking plan discipline pays for itself the first time you avoid a bad call based on a mislabeled event.
Choose Heap if you're pre-PMF, resource-constrained, and need to start seeing user behavior today without waiting on an engineering sprint to instrument events. Just know you'll likely outgrow it and want to migrate to something more rigorous once the product and team mature.
For most product teams past seed stage in 2026, Amplitude is the better long-term investment. It's the platform built for teams that actually act on what the data tells them.
Related Comparisons & Reviews
Read the full Amplitude review. Also see Amplitude vs Mixpanel if you want another head-to-head, or the guide to setting up product analytics to plan your tracking approach before picking a tool.