Attribution
Conversion Recovery Calculator
See the conversions iOS and ad blockers are hiding from you.
Browser pixels quietly miss conversions on iOS, Safari, and ad-blocked sessions. Plug in your numbers to put a dollar figure on that blind spot — and see how much server-side tracking can win back.
Conversions lost / month
354
Recoverable / month
301
Recovered revenue / month
$24,058
Spend on incomplete data
$9,273
Conversions you see — before vs. with server-side recovery
Estimates based on industry benchmarks: ~35% of conversions on iOS/Safari traffic and ~95% on ad-blocked sessions go unattributed by client-side pixels, of which server-side tracking recovers ~85%. Your real numbers depend on your audience and setup — connect EndFrame to measure them exactly.
How it works
Three inputs, one honest number.
- 1
Enter your monthly numbers
Add your monthly ad spend, the conversions you currently track, and your average conversion value.
- 2
Set your audience mix
Move the sliders for the share of iOS/Safari traffic and ad-blocker usage that match your audience.
- 3
Read your recovery estimate
See lost conversions, recoverable revenue, and how much spend is being optimized against incomplete data.
Why it matters
Stop guessing at the gap in your data.
Put a number on the blind spot
Client-side pixels undercount conversions. This shows roughly how many you're missing and what that revenue is worth each month.
Transparent assumptions
Every benchmark rate is shown on screen and driven by the sliders — no black box, so you can sanity-check the math.
Tie loss back to spend
See how much of your ad budget is being optimized against conversions your platforms can't actually see.
FAQ
Questions, answered.
Why do iOS and ad blockers cause conversion loss?
Safari's Intelligent Tracking Prevention caps cookie lifetimes, App Tracking Transparency limits identifiers, and ad blockers stop pixels from firing at all. Together they drop a meaningful share of browser-side conversion events.
How accurate is this estimate?
It uses conservative industry benchmarks, so treat it as a directional estimate rather than an exact figure. Your real loss depends on your audience and setup — connecting EndFrame measures it precisely.
What is server-side conversion tracking?
Instead of relying only on a browser pixel, conversions are sent from your server straight to platforms like Meta's Conversions API, GA4 Measurement Protocol, and TikTok Events API — where ad blockers and ITP can't intercept them.
Can server-side tracking recover every lost conversion?
Not every one, but most. The calculator assumes server-side tracking recovers about 85% of the conversions a client-side-only setup misses, which is in line with typical results.
Free tools, free trial
Stop optimizing on the conversions you can see.
EndFrame forwards conversions server-side to Meta CAPI, GA4, and TikTok with event-ID deduplication — recovering the signal iOS and ad blockers strip out, so your ROAS reflects reality.
No credit card required