Search “GA4 alternatives” and you get a round-up of fifteen dashboards that all count pageviews. That list is useless until you name the job you are hiring the tool to do. Google Analytics 4 is a measurement platform, an Ads pipeline, and a consent headache in one property. Replacing it with a slightly quieter version of the same thing is how teams end up with two broken reports.
This guide is for someone leaving GA4: what replaces it, and which kind of replacement fits your situation. For a tool-by-tool comparison of privacy analytics products (Plausible, Fathom, Simple Analytics, SiteLine), use the privacy-first analytics comparison.
SiteLine is one of those alternatives, with a specific wedge: cookieless on-site analytics plus a read-only Google Search Console import. It is not a GA4 clone, and it is not Mixpanel. If that is already enough to rule it out, good — this page is for choosing on purpose.
Three jobs hiding under one query
Job 1: A marketing dashboard you can defend
You need pages, referrers, countries, devices, UTMs, and a handful of conversions. You do not need user-level identity across days, session replay, or Ads attribution. You do need numbers that survive a cookie banner, because a 40% consent rate is not a traffic dip — it is a hole in the dataset.
This is the Plausible / Fathom / Simple Analytics job. SiteLine sits here too: no first-party analytics cookie, collect via fetch with credentials: 'omit', bots filtered, hostname allowlisted. Install notes are in /docs/script and /docs/react.
Job 2: Search Console that does not rot
The Search Console UI exports 1,000 rows and keeps data for the last 16 months, dropping each day after that (details). If organic search is how you acquire customers, that is the report you actually argue about in planning. GA4’s “organic search” channel is not a substitute: it is a session classification, not query-level clicks, impressions and position.
SiteLine imports Search Console with the webmasters.readonly scope, backfills 16 months, keeps the history while you subscribe, and re-imports the last 7 days every night. Google still publishes with a lag of a few days. CTR is computed from clicks and impressions; it is not stored as its own column. Unlimited properties on every plan.
Job 3: Product analytics
Signup funnels with twenty event properties, cohorts, retention, and identity that follows a user for months. That is Mixpanel, Amplitude, PostHog, or GA4 with a lot of custom events and a BigQuery export. SiteLine is explicit about not being this: custom events cap at 10 properties (key 64 characters, value 256), goals and funnels are derived in the UI from pageviews and events you already send, and the visitor hash resets at UTC midnight. There is no user-level identity across days.
If job 3 is the actual requirement, do not buy a privacy-first page-analytics tool and hope. Keep a product-analytics stack. You can still put cookieless marketing analytics on the public site.
What changes when you leave GA4
GA4 identifies visitors with a first-party cookie (_ga), so in the EEA you usually need a consent banner, and refused consent is a hole in the data. A cookieless tool avoids that for its own tracker, though you still own the legal basis. GA4 also has costs that "free" hides: data thresholds that withhold rows, sampling in some reports, event-level data retention of 2 or 14 months, and a UI that tends to need a specialist (sampling and thresholds in detail). Ads conversion import, BigQuery export and session replay are Google-stack features that privacy-first tools generally do not offer.
For the vendor-by-vendor table (identity lifetime, Search Console import, MCP access, pricing), see the privacy-first analytics comparison rather than a second copy here. A $4.99 tool that keeps query history past 16 months is cheaper than an afternoon reconstructing last year's landing pages from a CSV you forgot to download.
What to ignore in the usual tables
Ignore "real-time" as a tie-break. SiteLine has a live view of roughly the last 30 minutes, which is enough to see that a deploy did not kill tracking. Ignore "AI insights" unless the vendor will say whether an agent can query the data over MCP. SiteLine's MCP is read-only and returns coverage dates, so a model does not invent a traffic collapse from the Search Console lag. Ignore domain caps hidden in pricing footnotes: SiteLine's event pool is shared across unlimited analytics domains and Search Console sites. Billing detail is in /docs/billing.
When you should stay on GA4
Stay if you need Ads conversion import, Google signals demographics, or an unsampled BigQuery export as the warehouse. Stay if legal has already signed off on Google as a processor and your consent rate is high enough that the numbers are usable. Adding SiteLine beside GA4 is a valid path — Search Console plus cookieless page analytics — without pretending you have “migrated”.
If you are leaving because the banner tanks measurement, read why teams leave GA4 and cookieless analytics vs GA4. Signup is at /register.
FAQ
Is SiteLine a drop-in GA4 replacement?
No. It replaces the marketing dashboard and the rotting Search Console export. It does not replace Ads attribution, BigQuery, session replay, heatmaps, or Mixpanel-class product analytics. If those are requirements, keep the tools that do them.
Do I have to rip GA4 out on day one?
No. Install the SiteLine script or @siteline.tools/react on the public site, connect Search Console, and compare a month of pageviews against GA4’s consented subset. The mismatch is usually the point.
What happens to history if I cancel?
Search Console data you imported is kept while you subscribe. After access ends, analytics data has a 30-day grace period, then it is purged. There is no BigQuery-style warehouse export. Plan the CSV downloads you actually need before you cancel.