Tools · GA
GA4 operating tooling that keeps your property honest.
6 proprietary tools your analysts and engineers use to run GA4 as a real production system.
GA tooling
Annotations Automation
The problem
GA4 is full of unexplained dips and spikes. No one remembers what you released, no one ties promotions to the data, and debugging anomalies takes hours.
“Every conversion drop kicks off a two-week investigation.”
Analytics Lead, publisher
How it’s used
Pulls from Git commits, Jira releases, release notes, marketing calendars and ad platform change logs. Creates annotations in GA4 automatically, with context and owner.
The impact
Change log inside GA4
Anomaly triage in minutes
No more detective work on dips
GitHub · Maintained by Duga · Client access
GA tooling
Custom Dimensions Manager
The problem
You’ve hit GA4’s custom dimension limit. No one knows which dimensions are still in use, so nothing can be retired safely.
“We’re maxed out and can’t add the one dimension we actually need.”
Head of Measurement, fintech
How it’s used
Audits dimension usage over a rolling window, deduplicates overlapping definitions, and retires dead ones under a versioned spec. Change requests routed through a single source of truth.
The impact
Dimension budget under control
Retire with confidence
Single source of truth
GitHub · Maintained by Duga · Client access
GA tooling
Ecom Attributor
The problem
GA4’s built-in ecommerce attribution is broken for subscription and repeat-purchase businesses. Every reorder gets the wrong credit.
“GA4 credits 40% of subscription revenue to organic search, it’s obviously wrong.”
CFO, subscription brand
How it’s used
Custom attribution that knows about product lifecycle, first vs repeat purchase, and net new revenue. Tuned to your basket economics.
The impact
True contribution per campaign
Subscription logic built in
Numbers finance will sign off
GitHub · Maintained by Duga · Client access
GA tooling
GACI (GA Config Inspector)
The problem
GA property configs drift. Somebody adds an event, someone else deletes a dimension, and by month six no one can tell what’s changed.
“I can’t prove the config matches what we agreed six months ago.”
Measurement Consultant
How it’s used
Snapshots the complete GA property configuration daily, diffs against the approved spec, and alerts on unauthorised changes. Audit trail exportable to PDF.
The impact
Config drift caught same day
Defensible audit trail
Reports trustworthy again
GitHub · Maintained by Duga · Client access
GA tooling
Calibrator
The problem
GA4 numbers don’t match Shopify, Stripe or your ERP. Clients stop trusting the dashboard.
“Every Monday meeting opens with ‘why don’t the numbers match?’”
Client Partner, retail agency
How it’s used
Scheduled reconciliation between GA4 and your source-of-truth systems. Flags deltas above a configurable threshold, explains where the gap comes from.
The impact
Confidence in the dashboard
Delta explanations on demand
Fewer credibility conversations
GitHub · Maintained by Duga · Client access
GA tooling
UPD Inspector (User Property Data)
The problem
User properties silently fail to populate for chunks of traffic. Cohort and segmentation work downstream becomes unreliable.
“Half our LTV cohorts are built on properties that aren’t actually set.”
CRM Analyst
How it’s used
Validates every user property at the event level, measures coverage, and alerts when a property drops below a threshold. Clear owner for every signal.
The impact
Cohort analysis you can trust
Coverage alerts within minutes
Ownership for every user property
GitHub · Maintained by Duga · Client access
Your tools, not ours
Every tool on this page is built, maintained and updated by Duga. Clients get repo access, a documented onboarding, and ongoing support from the engineers who wrote the code. You’re not buying a one-off script, you’re getting a proprietary asset that ships improvements month after month.
GitHub access
Private repository with read access for your engineers. Fork, integrate, or deploy directly from our trunk.
Active upkeep
We track Google, Shopify and GA4 release notes so your tools stay compatible. Breakages fixed before you notice.
Quarterly releases
New features, hardening and performance work shipped on a quarterly cadence. Release notes written for humans.
Engineer support
Direct Slack access to the team who built the tools. Questions answered by the authors, not a ticketing queue.
Take the tools for a spin
Book a 20-minute walkthrough. We’ll show you the tool working on your own stack, share the GitHub repo, and scope onboarding.