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How much does lost tracking cost you?

Server-side tracking typically recovers 20–40% of the conversions you lose in Safari/Brave + ad-blockers. Calculate the impact on your accounts.

Your numbers

Monthly ad spend (CZK)

Monthly attributed revenue (CZK) per GA4 / Meta

Estimated data loss (%) average 20–35% after ITP/ad-block

RESULT

Current ROAS

After server-side

Recovered revenue / month

EUR

Payback

—

DataNostro plan for your volume

CZK / month

Net saving / month

EUR

Get started — recover your lost tracking Measure my site

The calculation is indicative — the actual recovery rate depends on the ratio of iOS/macOS visitors, the presence of ad-blockers, and the quality of your client-side tracking. During onboarding, DataNostro measures the exact loss on your own data.

How the server-side tracking ROI calculator works

This server-side tracking ROI calculator estimates how many conversions and how much revenue you lose to Safari ITP, ad blockers and iOS — and how much of it a move to server-side tracking on your own domain recovers. Enter your monthly ad spend, attributed revenue and estimated data loss; the calculator returns recovered revenue, your new ROAS, the payback period and net savings versus the DataNostro price.

ROAS measures return per unit of ad spend, ROI the net profit from your tracking investment. Server-side tracking improves both: more complete data means more accurate attribution, better campaign optimization and higher real return — without raising your budget.