Analytics Detectives · The GA4 Quality Suite

Audit any GA4 property for free. Spend your time fixing, not hunting.

Run a free audit across every GA4 property you manage59+ checks analyze your setup, surface each data-quality issue, and point you toward the fix in seconds, so your time goes to acting on the insight, not hunting for what broke.

The three Analytics Detectives — Watson, Sherlock, and Moriarty — gathered in their case room at dawn, surrounded by ledgers and brass instruments
Free for unlimited standard GA4 properties
See How It Works

Free for unlimited properties. Covers the last two weeks of data; GA4 360 excluded.

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Meet Your Detectives

Three detectives on the case, every week

Watson audits your GA4 and writes the analysis. Sherlock watches the daily numbers for trouble. Moriarty digs into any GA4 question and runs the root-cause analysis.

Landscape portrait of Watson, the Detective, at his ledger

Watson

The Detective

Watson audits your GA4 property — running the 59+ data-quality checks on every audit — then writes you a weekly Brief in plain English: what the analysis found, why it matters, what to do next.

  • Runs every GA4 data-quality check, every audit, automatically
  • Turns the GA4 analysis into plain English, not jargon
  • Delivers a weekly written Brief on every GA4 property you watch
Landscape portrait of Sherlock, the Watcher, observing quietly

Sherlock

The Watcher

Sherlock monitors your GA4 day-to-day metrics — a 40% session drop on a Tuesday, a sudden spike in unassigned traffic, slow drift in engagement — and analyzes each shift so anomalies surface before they skew your reports.

  • Monitors your GA4 metrics day-to-day for sudden shifts
  • Spots data drift before it corrupts your analysis
  • Pings you when a GA4 anomaly deserves attention
Landscape portrait of Moriarty, the Interrogator detective, leaning across a desk

Moriarty

The Interrogator

Moriarty is your GA4 analyst. Bring him any property: a finding, a trend, a number you don't trust. He runs the analysis and root-cause investigation across your GA4 data, dashboards, and reports — and hands back answers grounded in the numbers, not guesses.

  • Ask any GA4 question and get analysis grounded in your data, not guesses
  • Runs root-cause analysis (RCA) on findings across your Moriarty dashboards
  • Knows the Check Handbook so you don't have to memorise it

Always on watch

Connect a GA4 property once and the detectives stay on the case. Re-run audits whenever you like, watch data-quality trends in the History Scoreboard, see your whole GA4 roster in Mission Control, and get notifications when something needs attention. The watching is the product. Peace of mind is the point.

Meet The Suite

What the detectives do for you

Three detectives, a Core toolkit built around them, and everything you need to audit, analyze, and keep your GA4 data honest — without having to do it yourself.

Quick Audit

Run a full GA4 audit on a property in seconds, on demand — every check, every finding.

Property Scoreboard

Every GA4 data-quality check, every status, week-over-week, for a single property.

History Scoreboard

Track a property's GA4 data-quality trends and spot drift before it corrupts your reports.

Mission Control

One screen across your whole GA4 roster so you see which property needs analysis first.

Watson's Brief

A weekly GA4 analysis in plain English: what changed, why it matters, what to do this week.

Ask Moriarty

Ask any GA4 question and get analysis and root-cause answers grounded in your data.

Bulk Check

Audit many GA4 properties at once instead of clicking through them one by one.

Benchmark

See how a property's GA4 data quality compares so you know whether “fine” is actually fine.

Reports & share links

Client-ready GA4 audit reports and public links you can hand over without copy-paste.

Notes & decisions

Capture context on every GA4 finding so the next person, or the next you, isn't starting from scratch.

Notifications

In-app and email pings when something in your GA4 data needs your attention.

Who The Detectives Watch For

Less time babysitting GA4. More time on what matters.

A freelance consultant at a desk in a candlelit attic office, ledgers and a small lamp

Freelance Consultants

  • Delegate the watching to the detectives. Spend your hours on client strategy, not on GA4 babysitting.
  • Hand over client-ready GA4 audit reports and share links with one click
  • Scale your roster without scaling your weekly admin
An in-house analyst studying ledgers in a Victorian counting house

In-House Analysts

  • Spot GA4 configuration drift the week it happens, before it corrupts your analysis
  • 59+ GA4 checks run on every property so you can focus on the analysis that matters
  • Week-over-week GA4 trends so slow-burn issues stop hiding in plain sight
A small marketing team gathered around a Victorian pinboard plotting a campaign

Marketing Teams

  • Trust the numbers in your campaign reports. No GA4 expertise required.
  • A weekly GA4 analysis in plain English: what changed, why it matters, what to do next
  • Less time decoding data, more time on the work that moves results
A bustling Victorian agency office with rows of clerks at desks

Agencies

  • Mission Control across your whole GA4 client roster, so you see what needs attention first
  • Audit many GA4 properties at once with Bulk Check instead of clicking through each one
  • Hand clients clean, shareable GA4 reports, and get back to delivering insight

Case Evidence

See what Watson uncovers

Every GA4 audit delivers a clear health score, category-by-category analysis, and actionable verdicts.

Quick Audit — example-property.com
Health Score87%
Checks Passed48 All clear
Cautions7 Review suggested
Issues Found5Action needed

Category Breakdown

Property Foundation
Pass100%
Traffic Filtration
Pass100%
On-Site Health & Risk
Caution75%
Attribution & Sourcing
Fail50%
UTM Tagging Integrity
Caution80%
Event & Reporting
Pass100%

What's Hiding in Your GA4 Right Now

10 problems hiding in most GA4 setups

These are the silent killers hiding in most GA4 setups. Every audit analyzes your GA4 data for all of them, automatically.

Critical

Are your page URLs leaking personal data to Google?

If email addresses, phone numbers, or credit card digits appear in your GA4 page URLs, Google can terminate your property without warning. Most teams don't even know it's happening.

Watson scans every URL against 12+ PII pattern detectors so you can plug the leak before Google notices.

Are payment gateways stealing credit from your real traffic sources?

When PayPal, Stripe, or Klarna appear as referral sources, your conversion attribution is wrong. The campaign that actually drove the sale gets zero credit.

Watson checks against 58 known payment gateway domains and flags every one that's hijacking your attribution.

Is your own website appearing as a referral source?

Self-referrals silently fragment user sessions. One visitor looks like three. Conversion funnels break. Attribution reports become fiction.

Watson cross-references every referral source against your own hostnames to catch self-referrals you'd never spot manually.

Critical

Is GA4 only looking at a fraction of your data?

When data is sampled, GA4 extrapolates from a subset. Your reports look complete but the numbers are estimates — and for low-volume segments, they can be wildly inaccurate.

Watson inspects the API response metadata that GA4 hides from view, so you know when your reports can't be trusted.

Is spam traffic inflating your session counts?

Ghost referrals and bot traffic pump up your numbers while diluting real engagement metrics. Your traffic report says growth — but none of it is real.

Watson matches every referral source against known spam patterns and flags the fakes instantly.

Is staging and localhost traffic polluting your production data?

Developer traffic from localhost, staging.*, and test environments mixes with real user data. Your conversion rates drop, your user counts inflate, and you can't tell what's real.

Watson detects development hostname patterns automatically — no filter setup required.

Are your email campaigns hiding as referral traffic?

When clicks from Gmail, Outlook, or Yahoo show up as 'referral' instead of 'email', your email marketing ROI disappears from reports. You can't prove campaigns work.

Watson identifies email service domains masquerading as referral sources so you can fix your UTM strategy.

Is ChatGPT sending you traffic, and are you even tracking it?

Tools like ChatGPT, Perplexity, and Claude are driving real traffic to websites. If you're not tracking it, you're blind to an emerging channel that could reshape your content strategy.

Watson monitors for 30+ chatbot referral patterns so you never miss a new traffic source.

Is your ecommerce funnel upside down?

When more people 'purchase' than 'add to cart', your funnel data is broken. Duplicate events, misconfigured tags, or wrong-page triggers make revenue reporting meaningless.

Watson validates that view_item > add_to_cart > begin_checkout > purchase fire in the correct order.

What percentage of your users are invisible to marketing?

When GA4 can't attribute users to any channel, those visitors become 'Unassigned' — a black hole in your acquisition reports. You're spending money but can't see where results come from.

Watson measures your unassigned rate and pinpoints the source/medium combinations causing attribution gaps.

These are just 10 of 59+ checks the detectives run on every audit.

The Check Handbook

Every check the detectives run, and why it matters

59+ checks across 13 categories. Each one designed to audit your GA4 for a specific data-quality issue hiding in your property.

How It Works

Investigate today. Keep watch every week.

Connect your GA4, audit it, read the analysis, and keep watch. No code, no configuration, no babysitting.

Watson turning a brass key in a vault door labelled GA401

Connect Your GA4

Sign in with Google and grant read-only access. The detectives never change your settings.

Sherlock with a magnifying glass over a sprawling open ledger02

Investigate

One click runs a full GA4 audit — 59+ checks across 13 categories. Findings in seconds, not hours.

Moriarty across a desk mid-interrogation, leaning toward the viewer03

Understand

Watson hands you a weekly GA4 analysis in plain English. Ask Moriarty follow-up questions about any property and get root-cause answers grounded in your data.

Watson on a rooftop at night, lantern raised over the city skyline04

Keep Watch

Re-run GA4 audits whenever you like, watch data-quality trends in the History Scoreboard, see your whole roster in Mission Control, and get notifications when something needs attention. The detectives keep watch. You keep your peace of mind.

A closed Victorian leather case file labelled Frequently Asked, magnifying glass resting on top

Frequently Asked Questions

Common questions, straight answers

The three detectives walking shoulder-to-shoulder out of the office at night, lanterns lit

Put the detectives on the case

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