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About ONmetrics

Data-Driven Marketing, One Expert.

ONmetrics is a digital marketing consultancy founded and operated by Dave De Vries, based in London, Ontario. Since 2014, Dave has been immersed in every aspect of internet marketing — from technical SEO audits and Google Ads management to conversion-focused web design and advanced data attribution.

Unlike agencies where your account is passed between junior staff, at ONmetrics you work directly with a seasoned professional who understands how SEO, PPC, web design, and data visualization work together as one cohesive growth engine.

Dave De Vries, Founder of ONmetrics - Digital Marketing Consultant
The Person Behind the Data

Meet Dave De Vries

Dave De Vries started his digital marketing career in 2014 with a simple conviction: marketing should be measurable, and every dollar spent should be accountable. Over the past decade, he's managed more than $50 million in advertising spend, completed over 200 marketing audits, and helped businesses across Southwestern Ontario transform their digital presence.

Frustrated by the gap between analytics tools and actionable revenue data, Dave built ONclix — a proprietary attribution platform that tracks the full customer journey from first click to final conversion. ONclix eliminates the guesswork that plagues most marketing operations by mapping every touchpoint to real revenue.

Dave's approach is rooted in technical depth. He doesn't just run campaigns — he engineers systems. From implementing server-side tracking and first-party data architectures to optimizing Core Web Vitals and building conversion-focused websites, every recommendation is backed by data and tested against measurable outcomes.

As a published author on Amazon and a recognized expert in marketing attribution, Dave brings a unique combination of strategic thinking and hands-on execution that larger agencies simply cannot match.

Credentials

Proven Expertise, Real Results

10+ Years Experience

Hands-on internet marketing since 2014

Google Ads Certified

Certified Google Ads professional

ONclix Creator

Built proprietary attribution platform

Published Author

Published author on Amazon

$50M+ Ad Spend

Managed over $50 million in advertising

200+ Audits

Comprehensive marketing audits completed

Why One Expert Beats a Full Agency

No Handoffs

Your strategy, campaigns, and reporting are all managed by one person who sees the full picture.

No Junior Staff

You'll never find out your account was delegated to someone with six months of experience.

Unified Strategy

SEO, PPC, web design, and attribution work together — not as disconnected silos.

Serving Southwestern Ontario

Based in London, ONmetrics provides expert marketing consulting across the region — from St. Thomas to Stratford, Woodstock to Exeter.

View our full service area →

Let's Talk About Your Marketing

Get a free, data-driven audit of your current digital marketing performance. No sales pitch — just actionable insights.

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