Your Marketing Data Is Probably Wrong. Find Out Why in 7 Days.
We uncover missing conversions, broken attribution, tracking errors, and reporting discrepancies across GA4, Meta, Google Ads, TikTok, GTM, and your CRM.
Not Sure Where Your Conversions Went?
Let's Fix the Data – Platform by Platform
You're running campaigns on Facebook, TikTok, Google, Taboola, Outbrain… but conversions don't match across platforms. ROAS is misleading. Dashboards feel like lies. And your GTM setup is a black box.
Mismatch Detection
Why your GA4 and ad platform numbers don't match.
Conversion Clarity
Where conversions are lost, misattributed or double-counted.
Connection Fixes
How to fix CAPI, GTM, SGTM, GA4 and CRM connections.
Scalable Reporting
Automate and scale reporting with Looker, Tableau or Metabase.
Fix GA4 & Google Ads Tracking Gaps – Get Accurate, Real-Time Insights
Say goodbye to reporting gaps and platform conflicts. With GA4, GTM/SGTM, Google Ads and CAPI aligned, every action stands on a foundation of truth.
What We Audit (and Fix).
Platforms
We troubleshoot data mismatches between ad platforms like Google, Facebook, TikTok, Taboola, Outbrain and Criteo.
Analytics
GA4 debugging, CAPI, Enhanced Conversions, GTM, SGTM and conversion tracking validation.
Dashboards
Looker, Tableau and Metabase setup review. We check for accuracy, filtering and segment attribution.
Data Connectors
We ensure consistent data flow between sources like Supermetrics, Windsor.ai, Google Cloud Storage and BigQuery.
Change your tracking game— for good.
Modernize your measurement with a rapid audit: we find why GA4, ad platforms, and CRM don’t line up—then fix it. Clean GTM/SGTM, CAPI, and dashboards you can trust.
Common Problems We Solve
The audit shows where your tracking breaks today and what needs to change so your team can trust the numbers again.
Before the Audit
After the Audit
Stop guessing. Start trusting your numbers.
If GA4, Google Ads, ad platforms or your CRM don’t line up, revenue decisions suffer. We find the gaps, fix the pipes, and give you dashboards you can actually trust.
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✓Fix GA4 vs. Google Ads/Meta/TikTok discrepancies and misattribution
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✓Repair GTM/SGTM, CAPI & server-to-server connections
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✓Ship dashboards in Looker/Tableau/Metabase your team will use
Is This Audit Right For You?
If Meta, Google Ads, GA4, TikTok or your CRM are showing different numbers, you’re not alone. Most businesses have hidden tracking issues that affect reporting, attribution and campaign performance. This audit helps uncover exactly where the data breaks.
Ecommerce brands spending €2,000+/month on advertising
Businesses running Meta, Google or TikTok Ads
Companies using GA4 and Google Tag Manager
Businesses experiencing reporting discrepancies
Agencies managing campaigns for multiple clients
Teams struggling to trust their marketing numbers
What Bad Tracking Really Costs
Most companies don't have a traffic problem. They have a measurement problem. When conversion data is incomplete, duplicated or misattributed, marketing decisions become expensive.
Missing Conversions
Underreported results make campaigns appear less profitable than they really are.
Broken Attribution
Budget gets shifted toward the wrong channels based on inaccurate data.
Duplicate Events
Artificially inflated ROAS and conversion numbers create false confidence.
CRM Gaps
Marketing teams lose visibility into lead quality and actual revenue outcomes.
Broken CAPI
Platforms receive weaker signals, reducing optimization and campaign efficiency.
If you're spending €5,000+ per month on advertising, even a 10% measurement error can result in hundreds or thousands of euros being allocated based on incorrect data.
What You'll Receive
Every audit includes a clear diagnosis, prioritized recommendations, and a roadmap for fixing the issues impacting your marketing data.
How It Works
From the initial diagnostic call to the final roadmap, we guide you through a structured process designed to uncover and fix tracking issues quickly.
Free Diagnostic Call
We review your setup, discuss reporting discrepancies, and determine whether a full tracking audit is the right next step.
Technical Audit
We inspect GA4, GTM, SGTM, Meta CAPI, CRM integrations, attribution logic, dashboards and data connectors.
Findings & Roadmap
You receive a Tracking Health Score, detailed audit report, prioritized fixes and a roadmap for implementation.
What’s Included in the Audit?
Four practical components designed to uncover tracking problems, explain their impact and give your team a clear next-step roadmap.
Technical Diagnosis
We analyze your GTM and SGTM tag structure, debug issues across GA4, Meta CAPI and TikTok Events API, and review server-to-server integrations.
Data Validation
We review Looker, Tableau or Metabase setups to spot data pipeline issues, sync problems and measurement gaps.
Dashboard Assessment
We validate metrics, identify discrepancies between sources and ensure stakeholders are working from accurate reporting.
One-on-One Audit Call
You get a 60-minute live session where we walk through key findings, prioritize fixes and explain the roadmap.
FAQ
How long does the audit take?
5–7 business days. You’ll receive the report and roadmap within that timeframe.
Is the price really fixed?
Yes. €500 includes the complete audit, 60-minute findings call and documentation.
What if we don’t use some of the tools you mention?
No problem. We tailor the audit based on your actual stack, platforms and reporting setup.
Do you also fix the issues?
Yes. Fixes can be handled by your internal team or MASS DATA can implement them for an additional fee.
How much access do you need?
We typically require read-only access to GA4, GTM, advertising platforms and dashboards. No changes are made without approval.
What happens after the audit?
You receive a detailed roadmap. You can implement the fixes internally or engage MASS DATA to handle implementation.
The Platforms We Work With
We audit the full measurement stack behind your campaigns, from browser-side tracking to server-side events, dashboards and data connectors.
Google Tag Manager (GTM)
We review your tag structure, triggers, variables and event setup to ensure tracking is clean, modular and reliable.
Server GTM (SGTM)
We audit server-side data collection, event routing, endpoint setup and tracking quality across browser and server layers.
Meta CAPI & TikTok Events API
We validate server-side event delivery, deduplication, match quality and conversion signal consistency for ad platforms.
GA4, CRM & Enhanced Conversions
We check whether analytics, ad platforms and CRM systems are connected correctly and sending usable conversion data.
Looker, Tableau & Metabase
We review reporting logic, filtering, attribution views and dashboard accuracy so teams can trust the numbers they see.
Supermetrics, Windsor.ai, BigQuery & Cloud
We inspect data connectors, sync reliability, warehouse flows and source consistency across your reporting infrastructure.
Trusted Platforms
We have implemented, audited and optimized tracking across the most widely used advertising, analytics and reporting platforms.
Discover What Customers Are Saying About Us
Real feedback from clients who trusted MASS DATA with tracking, marketing, SEO and performance growth.
Mass Data is fantastic to work with
Mass Data is fantastic to work with. He solved the issues my site was having and notified me of other issues I had no idea about! He fixed those too. I highly recommend Mass Data.
Great marketing team with real results
I’ve been working with this marketing company for some time now, and the results have been excellent. They handle everything from managing ad accounts to writing effective copy and refining ad creatives.
Great collaboration!
We collaborated with Mass-Data on Google Ads, SEO, and content strategy projects. The experience was excellent – top results, clear communication, and a professional approach from start to finish.
Not Sure If Your Tracking Is Broken?
Book a free 15-minute diagnostic call and we'll point out the first issues we'd investigate in your setup.
Prefer Email Instead?
Contact us directly and we'll get back to you as soon as possible.
Contact Us