Piotr Litwa
Your GTM & Analytics - always working. Always accurate.
I monitor Google Tag Manager and GA4 for businesses across Europe - so your marketing data is always reliable, your agency is always accountable, and you never make decisions based on broken tracking.
CEO & founder
Analytics Expert · Your Partner in Data & Tracking
Services
What I do - focused, outcome-first services
Consent & Compliance Retainer
Continuous verification that your Consent Mode v2 signals and stored consents are correct, with a regulator-ready audit log. Work and documentation - not legal advice.
Learn moreTracking Assurance (GTM + GA4)
Continuous monitoring of your GTM container and GA4 data. Breakage detected within 4h and fixed within 48h - or that month is free. Priced to your ad spend.
Learn moreAgency Oversight
Independent monthly review of your agency's work - tracking, budget efficiency, attribution. No conflict of interest.
Learn moreData Ownership Retainer
One source of truth for sales and marketing data - reconciled every month against your ERP/CRM, with every discrepancy explained. Named accountability for the numbers.
Learn moreNew Is your traffic from ChatGPT, Claude or Perplexity even showing up in GA4? Measuring traffic from AI models
How NOT to set up GTM - and what actually works
My talk at WordCamp Poland 2024 about the most common GTM mistakes that destroy SEO and tracking accuracy. 30 minutes of practical fixes you can implement today.
Watch the full talkProducts
Tools I've built and run - not just consulting
Human Tracking
Server-side GA4 for WooCommerce - adblocker-proof, EU data region, Consent Mode v2.
Learn moreAI Visibility
Audit your content for LLM crawlers (Claude, ChatGPT, Gemini) and publish AI-ready feeds.
Learn moreUTM Builder
Multi-tenant UTM builder with a governed taxonomy - consistent campaigns, zero typos.
Learn moreUniversal Consent Adapter
Open source. Reads CMP consent in under 1 ms, before the CMP's own JS loads - 10 CMPs supported.
Learn moreSpecializations
Industries I know best
E-commerce & Retail
Conversion path analysis, shopping cart tracking, customer segmentation, and sales forecasting. I help online stores make data-driven decisions that actually increase revenue.
SaaS & Technology
Product metrics, customer lifetime value, churn analysis, and growth experiments. I support tech companies in understanding their users through reliable tracking.
DIY & Home Improvement
Seasonal trend analysis, inventory optimization, and customer project segmentation. Specialist experience in e-commerce for the building and tools sector.
Testimonials
What clients say
"I've had the pleasure of working with Piotr in the digital space for several years. He has consistently delivered insightful analyses that we successfully implemented in our projects. Analytical thinking, holistic perspective, fast decisions - that's what working with Piotr looks like. Highly recommended."
"Piotr is an excellent data expert - very engaged and proactive. He delivers actionable insights, not just information. I truly valued working with him while managing digital business at Carrefour."
"Piotr is a versatile professional who effectively solves problems across the broad spectrum of digital technology - from analytics to cybersecurity. This holistic approach gives him a strong voice in any IT discussion. A great team player and a great person."
"I recommend Piotr as a valuable resource supporting organizations in data analytics with direct impact at both operational and strategic level. His competencies perfectly align with the principle: 'If you can't measure it, you can't improve it.'"
Pricing
Simple, transparent pricing
Assurance pricing scales with your monthly ad spend - because the size of that spend is the size of the value at risk when your tracking breaks.
Up to €10,000 / mo ad spend
Breakage detected within 4h · fixed within 48h.
- Continuous GTM + GA4 monitoring
- Consent Mode v2 signal checks
- Data layer integrity checks
- 2h of config changes / month
- Monthly written summary
€10,000-€50,000 / mo ad spend
Breakage detected within 4h · fixed within 48h.
- Everything in the smaller tier
- Priority monitoring cadence
- Attribution & conversion audits
- 4h of config changes / month
- Monthly written summary
€50,000+ / mo ad spend
Breakage detected within 4h · fixed within 48h.
- Everything in the mid tier
- Custom monitoring scope
- Server-side & multi-property coverage
- Named consultant accountability
- Monthly written summary
Consent & Compliance
or €390/mo as an Assurance add-on
- Consent Mode v2 signal & state verification
- Audit log as evidence for inspections
- Quarterly regulatory-change review
- Documentation pack on request
- Named consultant accountability
Work and documentation, not legal advice.
Subscribers get a lower escalation rate - €110/h versus the €140/h list rate. Adobe, BigQuery, Python, R, PowerBI, Looker - see Specialist Engagements.
FAQ
Frequently asked questions
What do you monitor, and how fast do you catch problems?
Automated checks run continuously across your GTM and GA4 - tags, triggers, data layer, Consent Mode v2 signals, key events and conversions - so breakage is detected within 4h and fixed within 48h. A periodic interpretive review on top catches subtler drift, and you get a written summary as a by-product - not as the main deliverable.
Do I need to give you access to my GTM or GA4?
For monitoring I need read-only access to GTM and GA4 - takes about 5 minutes to set up. I'll send you a short onboarding form after you subscribe.
How does Agency Oversight work if I don't share agency access?
You share your ad platform reports (Google Ads, Meta) and I cross-reference them with your GA4 and tracking data independently. No direct agency access needed.
Can I cancel anytime?
Yes - cancel any time directly in your Stripe billing portal. No minimum period, no cancellation fees, no awkward conversations.
Not sure where to start?
Run a free GTM audit - 30 seconds, 10 minutes to results. See exactly what's broken on your site before spending a single euro on a subscription.
Run the free auditNo signup required · 100% free · No obligations