Microsoft Clarity vs Harvv
Clarity shows you what happened. Harvv tells your AI why.
Clarity records video of your visitors and draws heatmaps of where they click, and it is genuinely good at that. You watch the recordings and read the maps yourself to work out what is wrong. Harvv does the working-out and hands the answer to your AI.
Clarity hands you three things to interpret
All of them require a person
- Another dashboard. One more set of charts to go and check.
- Heatmaps. A coloured picture that only a human can read.
- Session recordings. Video that someone has to sit and watch.
Harvv hands you one thing
A sentence you can act on
- 1,842 people landed on your homepage, stayed 24 seconds, and never scrolled once. Your pricing, your proof and your call to action did not exist for them.
- Each finding names the element and the page, and comes with the fix written out.
- Your AI reads it directly over MCP, in ChatGPT, Claude or Copilot.
What your AI can actually get
Clarity ships an MCP server so your AI can query it. These are the limits Microsoft publishes on that connection.
| What | Microsoft Clarity | Harvv | Why it matters |
|---|---|---|---|
| Questions your AI may ask, per daysource | 10, per project | No daily ceiling | Their AI runs dry by lunch |
| A paid tier that lifts the capsource | None exists | Not the constraint | No self-service escape hatch |
| How far back your AI can looksource | Previous 1 to 3 days | Your full history | You cannot ask about last month |
| How much comes back per answersource | 1,000 rows, no pagination | The complete answer | A truncated answer still reads as complete |
Whose data is it
Clarity is free. Microsoft is the data controller, which is a different relationship from the one you have with a tool you pay for.
| What | Microsoft Clarity | Harvv | Why it matters |
|---|---|---|---|
| Delete one person’s datasource | Delete the whole project | Nothing personal to delete | A deletion request you cannot honour |
| Healthcare and other sensitive sitessource | Restricted by their terms of use | Zero PII collected, by design | Regulated sites cannot safely use it |
| Who controls the datasource | Microsoft, as data controller | You do | Free, because the arrangement is not only about you |
What Clarity is genuinely good at
Clarity is excellent at watching, and on two of these rows it is simply ahead of us. Here is what watching costs.
| What | Microsoft Clarity | Harvv | Why it matters |
|---|---|---|---|
| Video of real sessionssource | Yes, and it is good | No, by design | Someone still has to sit and watch them |
| How long the evidence lastssource | 30 days; favourites and a sample, 9 months | No video to expire | Evidence can expire before the quarterly review |
| Your busiest dayssource | Records up to 100,000 sessions per project per day | No recording cap to hit | Big sites lose exactly their biggest days |
Left out, because we could not source it
A comparison page is the easiest place to publish something confidently wrong, so anything we could not tie to a first-party Microsoft source is not on this page:
Single sign-on. We could not find a Microsoft statement either way, so we make no claim about whether Clarity supports SSO.
Clarity’s site count. Third-party trackers disagree by roughly 50× and Microsoft publishes no figure, so we quote none.
Raising the API limits. Microsoft support says there is no self-service way and no paid tier, and also points enterprises at clarityms@microsoft.com to ask. We say the first part, which is documented, and not that it is impossible, which is not.
Common questions
Is Harvv a replacement for Microsoft Clarity?
Not exactly. Clarity records video of sessions and draws heatmaps, and it is good at that. Harvv does not record video at all. Harvv detects the problems automatically and writes each one up in plain English, so the output is an answer rather than footage to review. Plenty of teams run both.
What are Microsoft Clarity’s AI and API limits?
Microsoft documents 10 API requests per project per day, data from the previous 1 to 3 days only, and a maximum of 1,000 rows per request with no pagination. Microsoft support states there is no self-service way to raise these and no paid tier, though enterprises can email clarityms@microsoft.com to ask.
Why does Clarity cost nothing?
Clarity is free and Microsoft is the data controller for it. That is a different relationship from a tool you pay for, and it is the reason individual-user deletion is not available: Microsoft’s FAQ says you must delete the entire project to delete one user’s data.
Does Harvv record my visitors?
No. Harvv captures behavioural signals (dead clicks, rage clicks, scroll depth, network failures, layout shifts) with zero personally identifiable information. There is no session video, so there is nothing to redact and nothing to expire.
See what Harvv finds on your site.
Point it at your URL and get the findings, each one naming the element, the page and the fix. No card, and no video to watch.
Free forever for 1 site. No credit card.