Best Free Heatmap Tools 2026: 6 Options Compared

A heatmap tool shows where visitors click, how far they scroll and where they hesitate on a page, and free versions are limited by sessions, pages or how long data is kept. Microsoft Clarity is the outlier because it advertises no traffic limits, so it is the safe place to start on a site with real traffic. Hotjar's free plan covers a good number of sessions per month and is the easiest to explain to a client. PostHog bundles heatmaps with product analytics and session recordings, which helps if you want one tool for the whole funnel, and it can be self-hosted. OpenReplay is an open-source session replay tool, so it fits teams that cannot send visitor data to a third party. Mouseflow and Plerdy offer small free tiers: Mouseflow stops at 500 sessions a month, and Plerdy caps heatmaps per day. The trade-off to remember is privacy. Heatmaps and recordings can capture form fields and personal data unless you configure masking, and in Europe they usually need consent under cookie rules. Start with one page, such as your pricing or landing page, run it for a week or two, and change one thing at a time. A heatmap on a page with 50 visits a day takes a long time to say anything useful.

Microsoft Clarity

Free with no traffic limits, with unlimited heatmaps, sites and team members. It records up to 100,000 sessions per project per day. Proprietary and hosted by Microsoft, so visitor data goes to a third party.

Price: Free (Free with no traffic limits, unlimited heatmaps, sites and team members; records up to 100,000 sessions per project per day) (Microsoft Clarity pricing, checked 2026-10-22).

Platforms and license: Web browser. Proprietary SaaS.

Best for: High-traffic sites that want no session cap.

Hotjar

Free plan with up to 200k sessions a month and heatmaps included on Contentsquare's pricing page. The paid Growth plan starts at $39 a month. Familiar interface, but the free plan has less depth than paid ones.

Price: Free (Free plan with up to 200k sessions a month (shown on Contentsquare's pricing page, where hotjar.com/pricing now redirects)); paid from $39 per month, billed yearly (Growth; $49 billed monthly) (Hotjar pricing, checked 2026-10-22).

Platforms and license: Web browser. Proprietary SaaS.

Best for: Marketers who want a widely known tool.

Compare: Hotjar alternatives

PostHog

MIT-licensed analytics suite with heatmaps in the toolbar. Cloud free tier includes 5k recordings and 1M events a month, and you can self-host. More to learn than a pure heatmap tool.

Price: Free (Cloud free tier includes 5k recordings and 1M events a month; self-hosted hobby deploy suits about 100k events a month) (PostHog pricing, checked 2026-10-22).

Platforms and license: Web browser, Linux (self-hosted, Docker). MIT (ee/ directory under a separate licence) (open source).

Project activity: 40.5k GitHub stars · latest release desktop-v0.61.851 (Oct 27, 2026) · last commit Oct 28, 2026

Best for: Product teams that want analytics and heatmaps together.

OpenReplay

Open-source self-hosted session replay tool, mostly AGPL-3.0, whose docs list heatmaps. Free to run yourself, so visitor data stays on your server, but you maintain the install.

Price: Free (Open-source self-hosted edition is free; you run it yourself); paid from $199 per month (Dedicated managed instance) (OpenReplay pricing, checked 2026-10-22).

Platforms and license: Web browser, Self-hosted. AGPL-3.0 for most code; ee/ directory under a commercial licence (open source).

Project activity: 13.1k GitHub stars · latest release v1.28.0 (Sep 25, 2026) · last commit Oct 27, 2026

Best for: Teams that need to keep data on their own servers.

Worth knowing: Serverless usage-based plan has no listed rates.

Mouseflow

Free Forever plan covers 500 sessions per month on 1 website with 1 month of data retention. The pricing page lists click, scroll and geo heatmaps, but does not clearly tie them to the free tier.

Price: Free (Free Forever plan: 500 sessions per month, 1 website, 1 funnel, 1 month of data retention; the pricing page lists click, scroll and geo heatmaps but does not clearly tie them to the free column); paid from $25 per month (Essential) (Mouseflow pricing, checked 2026-10-23).

Platforms and license: Web browser. Proprietary SaaS.

Best for: Small sites with a few hundred visits.

Plerdy

Free forever plan with 100 heatmaps per day and 500 video sessions. One package covers one site, so it fits small projects; paid Startup is $21 a month.

Price: Free (Free forever plan: 100 heatmaps per day, 500 video sessions, 100 pop-ups, 100 e-commerce tracking and 100 conversions; one package covers one site); paid from $21 per month, pay monthly (Startup) (Plerdy pricing, checked 2026-10-23).

Platforms and license: Web browser. Proprietary SaaS.

Best for: Small sites that also want SEO and pop-ups.

Which one to pick

• You want no cap on traffic: Microsoft Clarity
• You already use product analytics: PostHog
• You must keep visitor data on your own servers: OpenReplay
• You run a small site with a few hundred monthly visitors: Mouseflow