The verdict
For a lean B2B founder, start with Microsoft Clarity. It is free, installs in minutes, and answers the cheapest, most urgent question , where your site leaks , with session replay and heatmaps. There is no reason not to have it running.
Reach for Spectacle the moment paid acquisition becomes a real line item and "which campaign drove that deal?" starts costing you money. At 99 USD/mo it is a deliberate investment in attribution, not a behavioural-analytics replacement. The two coexist comfortably: Clarity watches the page, Spectacle watches the pipeline. The mistake is expecting either one to do the other's job.
Side by side
| 9 points compared | ||
|---|---|---|
| Starts at | €89/mo | |
| Free plan | Yes | No |
| API | Yes | Yes |
| MCP server | Yes | No |
| Custom dashboards | No | Yes |
| Heatmaps | Yes | No |
| Product analytics | No | Yes |
| Self-hosting | No | No |
| Session replay | Yes | No |
| Links |
Plans and pricing
Microsoft Clarity
- ClarityFree
Spectacle
- Essential€99/mo
- Scale€349/mo
Who each is for
Choose Microsoft Clarity if…
Pick Spectacle when your problem has moved from "why do people leave my page?" to "which campaigns and channels actually drive closed revenue?" It is built for B2B SaaS and product-led teams running real ad spend across Google, Meta, and LinkedIn, and stitches those touchpoints to HubSpot, Salesforce, and Stripe so you can see pipeline contribution instead of vanity metrics. At 99 USD/mo (Essential), rising to 349 USD/mo (Scale), it is a considered spend , worth it when mis-attributed budget costs more than the subscription. If you are not yet spending meaningfully on acquisition, it is premature.
Choose Spectacle if…
Pick Microsoft Clarity if you want to understand on-site behaviour without spending a penny. It is the obvious choice when you are diagnosing a leaky landing page, a confusing signup flow, or a checkout drop-off , session recordings and heatmaps show you exactly where people hesitate, rage-click, or bail. Because it is genuinely free with no session, traffic, or seat caps, every lean team should have it installed regardless of what else they run. It integrates cleanly with GA4 and Google Tag Manager, so it slots into an existing stack. Just do not expect it to connect any of that behaviour to revenue , that is not what it does.
Other options worth a look
Combines analytics, session replay, and heatmaps to reveal user behaviour and identify conversion friction.
Measure website and app traffic, user behaviour, conversions, and revenue with free event-based analytics.
Lightweight, open-source web analytics that shows your traffic on one page without cookies or consent banners.
Assigns unique phone numbers to campaigns so inbound calls can be attributed to their original marketing source.