Built for Google Analytics 4

Stop losing campaign data
to Unassigned sessions

UTM Studio validates your UTM parameters against GA4 channel grouping rules, predicts the exact channel before you publish, and audits your property to find what's costing you money.

Start Free - No credit card See how it works

Free tier available. Pro from $30/month.

~30%
of GA4 sessions can appear as "Unassigned" when UTMs are missing or misconfigured
18
validation checks run in real-time against GA4 channel grouping rules
$0
wasted on campaigns you can't track - with the integrated ROI Calculator

How it works

From broken UTMs to clean data
in 3 steps

1

Connect

Sign in with Google and connect your GA4 property in one click. No complex setup, no service accounts required.

2

Scan

UTM Studio audits your GA4 property, finds Unassigned sessions, identifies root causes and ranks issues by financial impact.

3

Fix

Get suggested fixes with corrected UTM parameters. Validate new UTMs before publishing to prevent future issues.

Features

Everything you need for
clean GA4 attribution

UTM Validator

18 real-time checks against GA4 channel grouping rules. Know exactly why a session would be Unassigned before it happens.

  • Predicts the exact GA4 channel
  • Detects casing, encoding and typo errors
  • Covers all 19 GA4 default channels incl. AI Assistants

UTM Builder

Build compliant UTM URLs with guided validation. Generate QR codes and export in bulk via CSV.

  • Channel-aware parameter suggestions
  • QR code generation for offline campaigns
  • Bulk CSV import/export

GA4 Audit

Connect your GA4 property and get a full audit of Unassigned sessions, ranked by financial impact with actionable fix recommendations.

  • Root cause analysis per session source
  • Budget waste calculator in your currency
  • Suggested fix for each issue

Pro Alerts Pro

Get notified when Unassigned sessions spike above your threshold. Daily automatic scans keep you ahead of problems.

  • Slack and Email notifications
  • Daily automated property scans
  • Downloadable historical reports

Who it's for

Built for people who care
about attribution

Digital Analysts

Stop spending hours debugging Unassigned sessions. Get root cause and fix in seconds.

Performance Marketers

Ensure every campaign is tracked correctly before you spend a single dollar on media.

Digital Agencies

Audit multiple client properties, generate white-label reports, and prove the value of clean data infrastructure.

Pricing

Simple, transparent pricing

Start free. Upgrade when you need more.

Free

$0 /month

Perfect to get started

  • Unlimited UTM Validate & Build
  • QR Code generation
  • 1 Bulk CSV upload/month
  • 1 GA4 Audit scan (one-time)
Get Started Free
Most Popular

Pro

$30 /month per property

For serious marketers & analysts

  • Everything in Free
  • Unlimited GA4 Audit scans
  • Daily automated scans
  • Slack & Email alerts
  • Unlimited Bulk CSV
  • Downloadable historical reports
Start Free Trial

Agency

Custom

For teams managing multiple clients

  • Everything in Pro
  • Multiple GA4 properties
  • Team access & roles
  • White-label PDF reports
  • Priority support
Contact Us

FAQ

Frequently asked questions

What are "Unassigned" sessions in GA4?
Unassigned sessions happen when GA4 cannot match a session to any default channel grouping - usually because UTM parameters are missing, misspelled, or don't follow GA4's specific rules. This means you can't see which campaigns are actually driving results.
Do I need to be technical to use UTM Studio?
No. UTM Studio is designed for marketers, not developers. If you know what a UTM parameter is and have access to your GA4 property, you have everything you need. Every issue is explained in plain English with clear steps to fix it.
How does the GA4 Audit work?
You connect your Google account, select your GA4 property, and UTM Studio queries your real data via the GA4 Data API. It identifies sessions with missing or malformed UTM parameters, runs them against GA4 channel rules, calculates the financial impact, and provides specific fix recommendations ordered by impact.
Is my GA4 data safe?
UTM Studio uses Google's official OAuth2 authentication - we never see or store your GA4 credentials. Data is fetched read-only via the GA4 Data API and is used only to generate your audit report. We do not sell or share your data with third parties.
Can I cancel anytime?
Yes, absolutely. Pro is a monthly subscription and you can cancel at any time from your account settings. No questions asked, no cancellation fees.

Ready to fix your GA4 attribution?

Join analysts and marketers who use UTM Studio to keep their GA4 data clean. Start free, no credit card required.

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