GA4 alone is enough at first
New site, low traffic (on the order of a few dozen sessions a day) — fix purchase and leads in GA4 first.
Measurement and session replay
Web Analytics · UX. Microsoft Clarity and Google Analytics 4.
Microsoft Clarity vs Google Analytics 4
GA4 tracks conversions, campaigns and revenue. Clarity shows what people do on the page. When one tool is enough, when you need both, and how to link them without duplicating KPIs.
Google Analytics 4
How many, from where, did they buy
Conversions, campaigns, funnels, Ads and BigQuery export.
Microsoft Clarity
Why they did not buy
Heatmaps, session replay, rage and dead clicks on a specific URL.
Common mistake
Clarity does not replace GA4
In GA4 you count sessions, channels, conversions and ecommerce purchase. In Clarity you watch where users stall, what they click in frustration and whether something looks like a button but does not work.
In audits I see two extremes. Clarity only “because it is free” without solid GA4 — no trustworthy conversions. Or GA4 only while conversion rate drops — you know something breaks but cannot see it on the layout.
In stores and lead gen I usually start with GA4, GTM and CMP consent, then Clarity after analytics consent, with form field masking and optional account linking in Clarity.
Table: GA4 vs Microsoft Clarity
Not every report in both UIs — only what affects which tool you pick.
| Area | Google Analytics 4 | Microsoft Clarity |
|---|---|---|
| Primary goal | Traffic, conversions, campaigns | UX diagnostics and on-page behaviour |
| Session replay | No (aggregated paths only) | Yes — session recordings |
| Heatmaps | No | Yes — click, scroll, movement |
| Conversions and revenue | Yes — events, ecommerce, funnels | No — not a purchase source |
| Marketing attribution | Yes — channels, campaigns, models | No |
| Google Ads integration | Native | None — use GA4 for campaign KPIs |
| BigQuery export | Yes (plan) | Not a warehouse replacement |
| Cost | Free standard; 360 paid | Free |
| Implementation effort | Medium — measurement plan, GTM | Low — tag + CMP |
| GDPR / CMP | Requires analytics consent | Requires consent; PII masking |
| Cross-tool integration | Source of segments | Filter recordings by GA4 segments |
| On-site surveys / A/B | Not native | No — consider Hotjar or similar |
Strengths
Google Analytics 4
- Marketing and ecommerce reports most teams already know.
- Conversions, parameters, explorations and Google Ads linkage.
- Event export to BigQuery for reporting and warehousing.
- At high traffic you are not fighting a recording quota.
Weaknesses and limits
- No single-session video — only aggregated reports.
- Needs tidy events and dataLayer or reports mislead.
- Without Consent Mode and correct scope, banner traffic can look artificially low.
Microsoft Clarity
- Heatmaps and replay with no subscription at normal traffic levels.
- Rage clicks and dead clicks quickly flag annoying UI.
- After linking GA4 you filter recordings by a report segment.
- Usually one GTM tag plus CMP consent.
Weaknesses and limits
- Does not replace revenue, purchase or campaign attribution.
- With a few dozen sessions per day recordings stay rare.
- Replay can contain personal data — you need CMP, masking and a review process.
- No native surveys or A/B tests (then Hotjar or another tool).
A few rules from client work — no single tool for everything.
When to choose which tool
Add Clarity on top of GA4
Conversion drops, checkout breaks, new layout or Ads landing — you have something concrete to watch in replay.
Clarity is not instead of GA4
Clarity alone cuts you off from campaigns, conversions and Google Ads alignment.
Hotjar alongside or instead of Clarity-only
When you need on-page surveys, feedback widgets or A/B in one panel and have budget for it.
Store, PPC landing and B2B form — typical project situations.
Examples
E-commerce — abandoned checkout
GA4 shows falling purchase rate; Clarity shows which checkout step users abandon.
Verdict: Both tools; hard to fix checkout in a store without them.
Google Ads landing page
Conversion from ads falls with stable CTR — a heatmap often surfaces the issue faster than GA4 tables alone.
Verdict: Clarity on LPs with traffic; GA4 for campaign evaluation.
B2B lead form
generate_lead in GA4 plus replay of sessions that stop on a field or on Submit.
Verdict: Both; mask email and phone in Clarity.
Blog / low traffic
A dozen sessions a day is too few to pull regular insight from replay.
Verdict: GA4 for now; Clarity when you optimise layout or traffic grows.
Frequently asked questions
- Does Microsoft Clarity replace Google Analytics 4?
- No. GA4 counts conversions, channels and revenue. Clarity shows on-page behaviour. Different questions.
- What to implement first?
- GA4 with correct events and CMP consent. Add Clarity when you have traffic and a specific on-page issue to check.
- How to link Clarity with GA4?
- In Clarity project settings connect Google and the GA4 property, then filter recordings by a segment from a report.
- Is Clarity free forever?
- Microsoft does not charge a subscription for core features, but recording limits depend on traffic. Check Clarity docs for current terms.
- Clarity vs Hotjar — where does GA4 fit?
- Hotjar and Clarity are replay and heatmap tools. GA4 stays on conversions. Clarity vs Hotjar is in the Clarity guide.
Takeaways
Podsumowanie
Keep GA4 for numbers and marketing reports. Use Clarity to watch sessions. After linking accounts it is easier to go from a falling segment to specific recordings.
GA4 and consent first. Add Clarity when you have traffic and a concrete page problem to inspect. Tag setup and GDPR are in the Clarity guide; readiness in the checklist.
Wsparcie wdrożeniowe
Need GA4 and Clarity wired with GTM and CMP?
I set up GA4 conversions, run Clarity behind the cookie banner, link the accounts and help the team agree who reviews recordings and how often.