Practical resources.
Daily-use content for marketing operations — long-form guides, fast glossary lookups, calculators, and downloadable checklists. Free, attribution-friendly, marketing-team-ready.
Guides.
From Google Ads audits to marketing mix modelling, server-side tracking migration to RFM analysis — long-form practical guides. Every one ships with a checklist, formula or table.
→ go to guidesGlossary.
CPA, ROAS, LTV, RFM, server-side GTM, agentic AI — the marketing world's terminology with practical definitions. Each term: formula + example + related guides.
→ go to glossaryComparisons.
Honest side-by-side comparisons against Triple Whale, Northbeam, Hyros, Madgicx, Optmyzr, Smartly. Where d-lens fits, where it doesn't.
→ go to comparisonsDownloads.
PDF checklists for marketing teams — Google Ads audit, WhatsApp Business compliance, Performance Max optimization. Print, lay on the desk, work down.
→ go to downloads