Heap vs Mixpanel 2026: Autocapture, Pricing and Fit

Heap vs Mixpanel used to be a simple argument: capture everything automatically, or track the events you choose. In 2026 both tools do both, Heap is part of Contentsquare, and the sharper differences are in how each one charges and what you can see before talking to sales. This comparison uses each vendor's own pricing page and documentation as read on 1 October 2026.

The short answer: Heap for retroactive autocapture, Mixpanel for a published rate, Arktis for stores

Choose Heap if you want every click, pageview and form submission captured from day one and the freedom to define events afterwards, and you can live with a paid price that is estimated or quoted. Choose Mixpanel if you want a rate you can calculate yourself: 1 million events a month free, then $0.00028 per event, with session replay included. Both are product analytics tools built for teams that ship software.

If you run an online store, Arktis is the clear winner. Heap and Mixpanel tell you how people use a product; a store needs to know which source and campaign its orders came from and what those customers cost. Arktis matches orders, where it can, back to the visit and the ad click or campaign that brought the visitor, counts conversions per UTM campaign and per ad platform next to the Meta spend it syncs per campaign, and lets you watch the session recordings of visitors who converted, filtered by source. It costs $49, $149 or $349 a month, all published, with a 7-day free trial on Growth.

Key takeaways

Heap captures interactions automatically and its documentation says that autocaptured data is retroactive, so an event defined today has history back to installation. Mixpanel is built around events you instrument, and added Autocapture as an option on every plan. Heap meters sessions and publishes one number, zero for up to 10,000 sessions a month. Mixpanel meters events and publishes its rate, with a calculator that shows 1.5 million events a month at $140. Mixpanel includes session replay on its free plan; Heap sells it as an add-on on its two custom-priced plans. Both connect to a data warehouse, in different directions and on different tiers.

Autocapture vs tracked events

This is the difference the two products were founded on, and each vendor still describes it in its own terms.

Heap's help centre says Heap automatically captures a wealth of user interactions and lists the default event types: pageviews, clicks, changes in an input, form submissions and sessions. The same page recommends using an autocaptured property over a manual snapshot where you can, because autocaptured data is retroactive. In practice you install the snippet, and months later you can point at a button, label it as an event and see its full history.

Mixpanel's documentation frames two ways to capture events. Autocapture collects a predefined set of events and properties and is described as the best way to get started quickly. Precision tracking means instrumenting events and properties specific to your business, and is described as the better option for deeper and more customised analysis. The two can run together.

Mixpanel's Autocapture is available on all plans and is switched on through a setting in its JavaScript SDK, with mobile SDK support as well. It collects pageviews, page scrolls, form interactions, element clicks, dead clicks and rage clicks. Mixpanel recommends testing it in a sandbox project first to evaluate its impact on your data consumption, which matters because Mixpanel bills per event and autocaptured events are not on its list of non-billable events, and its Autocapture page tells you to monitor event volume in your billing settings as you change the configuration.

That is the practical trade. On Heap, capturing everything does not change the meter, because the meter is sessions. On Mixpanel, capturing everything is a billing decision, and the tool's own advice is to configure it carefully.

Pricing: one hides the number, one publishes it

Mixpanel's pricing is arithmetic. Its documentation states that the first 1 million events are free and that on a 1 million event plan the additional data rate is $0.00028 per event, with volume discounts when you buy higher volumes upfront. The calculator on the pricing page shows 1.5 million events a month at $140 on monthly billing or $120 on annual. Growth covers up to 20 million events a month. Enterprise is quoted, and Mixpanel's docs say its tracked-user Enterprise plan starts at $20,000 a year. One caution: the docs also say it is not possible to set a billing limit, only alerts.

Heap publishes no paid price. Its pricing page lists Free, Growth, Pro and Premier. Growth asks you to sign up and install the free snippet to get an estimate, and Pro and Premier are labelled custom session pricing with a contact button. The only public benchmark is contract data from Vendr, a software buying platform, whose Heap page, last updated in February 2026, says the median buyer pays $41,220 a year based on 191 purchases.

Heap being part of Contentsquare adds a second price list. Contentsquare's own pricing page sells Product Analytics, which it says carries Heap's capabilities, on Free, Growth, Pro and Enterprise plans, and every one of those routes to a sales conversation. Contentsquare's Heap page says existing Heap tools, plans and accounts still work as usual. If you are buying new, ask which product and which contract you are being quoted. Our Heap pricing guide and Mixpanel pricing guide go through each plan line by line.

Free plans and limits

The two free plans are hard to compare directly because they count different things. Heap defines a web session as ending after 30 minutes of pageview inactivity, and a session can contain any number of events.

Both over-limit rules are worth reading twice. Heap's pricing FAQ says it will not drop or throttle your data when you exceed your monthly limit, but you will be asked to upgrade and need to do so before you can view your data again. Mixpanel's free plan works in a similar way: its docs say it keeps collecting past 1 million monthly events and charges no overage, but blocks your reports until you upgrade or the allowance resets the following month.

Mixpanel's free plan also includes up to 10 active feature flags, according to its pricing page. Heap's free plan includes single sign-on, which is unusual at that tier.

Session replay

Mixpanel treats replay as part of the product. The free plan includes 10,000 session replays a month. On Growth, the comparison table lists 20,000 monthly sessions while the plan card advertises up to 500,000, so confirm which applies to your account. Replay retention is 30 days on Free and Growth and 7 to 365 days on Enterprise, and the table lists heatmaps and clickmaps under the same heading.

Heap treats replay as an upsell. Session replay, heatmaps and error analysis are sold together as the Experience Analytics add-on, and the pricing page marks that add-on as available for Pro and Premier only. A team on Heap Free or Growth cannot buy replay at all. If watching sessions is part of how you work, Mixpanel gets you there without a sales call.

Warehouse support

The two tools connect to a warehouse in opposite directions by default.

Mixpanel's Warehouse Connectors bring data in. Its documentation says you can sync data from Snowflake, BigQuery, Databricks, Redshift and Postgres into Mixpanel, and that organisations on a paid event-based plan receive Warehouse Connectors as a free add-on when they update or renew. Going the other way, Data Pipelines exports events to a warehouse or cloud storage bucket and is an add-on on Growth and Enterprise. Mixpanel's docs say that add-on carries a charge of 20 percent on additional data ingested above your plan.

Heap Connect sends data out. Heap's help centre lists BigQuery, Redshift, Snowflake and S3 as supported destinations, and says the export includes all historical data from the day you installed Heap. It is available on Premier, or on Pro as an add-on, which means it sits behind custom pricing.

For a team whose analysts live in SQL, Heap Connect's retroactive export is a real strength. For a team that wants business data from the warehouse joined to product events inside the analytics tool, Mixpanel's connectors are the more direct route.

Which should you choose

Take Heap if you do not yet know which interactions will matter, your engineers are stretched, and retroactive analysis is worth more to you than a predictable invoice. Take Mixpanel if you want to model the cost before you commit, need replay on day one, and are willing to plan what you track. Our Mixpanel vs Amplitude comparison covers the other common head-to-head.

Both vendors also have attribution reports. Heap's pricing table includes its Influence report on every plan, and Mixpanel's lists campaign reporting and multi-touch attribution. These credit touchpoints inside each tool's own event data. They are useful for a product team asking which feature or channel precedes a signup.

The verdict for an online store

Neither tool is built around an order. A store's questions start at the ad click: which campaign brought this buyer, what did the click cost, and did the order cover it. Answering that means capturing the click identifier on landing, keeping it against the visitor, and matching the eventual order back to it.

Arktis is the product we build, so weigh this accordingly. Its tracker captures gclid, fbclid, msclkid, ttclid and other ad click identifiers plus UTM parameters, and holds them across sessions. Stripe customers are matched to visitors through a four-pass waterfall, and Shopify orders are matched on email where the store has identified the visitor, otherwise on the UTM source of a session from the previous 24 hours, which can be another visitor's session. Arktis then counts conversions per UTM campaign and per ad platform, next to the Meta spend it syncs per campaign, and compares first-touch, last-touch, linear, time-decay and position-based credit per ad platform. The model comparison covers visits that carried an ad click identifier.

Starter is $49 a month for up to 50,000 monthly tracked visitors, Growth is $149 for up to 250,000 with session recordings, and Scale is $349 with unlimited visitors. Recordings are buffered in the browser and discarded unless the visitor gives consent. For a store, that is the clear winner over either product analytics tool, at a price you can read before you sign up.

Where Arktis does not fit

Arktis is not product analytics. It has no retroactive event definition, no feature flags and no experimentation, and it has no free plan. If you are building a software product and need funnels, retention curves and cohort analysis across in-app behaviour, choose Heap or Mixpanel, and this comparison should help you decide which. Arktis also syncs ad spend per campaign for Meta only; Google, TikTok and other spend is entered manually per platform and period.

To see order-level attribution on your own traffic, start the 7-day Growth trial, or read the tiers on the pricing page. Arktis vs Heap and Arktis vs Mixpanel compare each tool with Arktis feature by feature.

Sources

Heap pricing page, plans, free tier, add-ons, session definition and over-limit policy, accessed 1 October 2026

Heap help centre: autocaptured data, default event types and retroactive autocapture, accessed 1 October 2026

Heap help centre: Heap Connect overview, supported warehouses, plan availability and historical data, accessed 1 October 2026

Mixpanel pricing page, plan limits, calculator, session replay and feature table, accessed 1 October 2026

Mixpanel docs: pricing, the $0.00028 rate, non-billable events, free plan over-limit behaviour, add-on surcharges, billing limit and Enterprise entry point, accessed 1 October 2026

Mixpanel docs: Autocapture, availability, captured events and precision tracking, accessed 1 October 2026

Mixpanel docs: Warehouse Connectors, supported warehouses and plan availability, accessed 1 October 2026

Contentsquare pricing page, Product Analytics plans all sold through sales, accessed 1 October 2026

Contentsquare: Heap, integration into Product Analytics and continuity of Heap plans, accessed 1 October 2026

Vendr: Heap pricing, median $41,220 a year from 191 purchases, last updated February 2026