Signal Sparrow
Solutions — Fix blocked tracking

Recover the conversions iOS and ad blockers hide.

Your conversions probably aren't down — your tracking is blind. iOS, Safari, ad blockers and consent banners silently drop 10–30% of conversions before your pixel or GA4 ever sees them, so you under-report results and mis-spend budget. Signal Sparrow recovers that lost data with first-party, server-side tracking from your own domain.

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Beats blockers & iOSFirst-party and consent-safeReconciled to StripeLive in 30 minutes

Diagnose the problem

Four things are quietly deleting your data.

If your dashboards feel 'off' — GA4 shows fewer conversions than Stripe, or Meta and Google disagree by a wide margin — it's usually not one bug. It's four privacy mechanisms working at once, each removing a slice of your client-side data before it's ever recorded.

The common thread: they all target third-party, browser-side tracking. First-party, server-side tracking sidesteps all four because the data is served from your own domain and recorded on your server.

  • 01

    iOS App Tracking Transparency

    Opts users out of cross-app tracking

    Cross-app trackingOpted out
  • 02

    Safari / Firefox ITP

    Caps JS cookies to 1–7 days

    JS cookies1–7 days
  • 03

    Ad & content blockers

    Filter known tracker domains

    Tracker domainsFiltered
  • 04

    Consent banners

    Gate tags until consent

    TagsGated
Why a data gap costs real money

Blind spots don't just under-count — they misdirect spend.

Missing conversions aren't a reporting inconvenience. Every dropped event distorts the decisions you and the ad algorithms make next.

Conversions that never fire10–30%
The campaignLooks worse than it isUnder-counted
Your callBased on what you can seeCut it
A quiet winnerGone
Problem 01

Under-reported results

When 10–30% of conversions never fire, campaigns look worse than they are — and you cut winners that are quietly profitable.

The sampleShrinking and biasedSkewed
The algorithmLearns from itWrong audiences
CPADrifts up
Problem 02

Mis-optimized ad spend

The platform learns from a shrinking, biased sample (blockers skew toward certain users), so it optimizes toward the wrong audiences and CPA drifts up.

Counted conversionsFewer than realToo low
CAC and paybackOverstatedToo high
Unit economicsBuilt on holes
Problem 03

Inflated, unreliable CAC

Fewer counted conversions means overstated CAC and payback. You can't trust unit economics built on data with holes in it.

How you fix it

Move tracking to your domain and your server.

  1. DNS recordVerifying
    Type
    CNAME
    Name
    data.yourdomain.com
    Target
    edge.signalsparrow.com
    Step 01

    Serve from your own domain

    Point a subdomain at Signal Sparrow with one CNAME. Tracking now loads first-party — invisible to blockers that filter third-party tracker domains.

  2. page_viewCapturing
    gclid
    Cj0KCQjw…
    utm_source
    google
    landing_page
    /pricing
    referrer
    google.com
    Step 02

    Capture server-side

    Events are recorded on the server, not in the browser, so iOS ITP cookie caps and blockers can't reach in and drop them.

    • Meta CAPIQueued
    • Google AdsQueued
    • TikTok EventsQueued
    Step 03

    Recover and forward

    Reconnected conversions flow into attribution and back out to your ad platforms via server-side CAPI — the signal the algorithms were missing.

What recovery looks like

The same month, measured two ways.

First-party server-side tracking doesn't invent conversions — it recovers the real ones your pixel dropped. Here's a typical month before and after: the conversions blockers hid come back, long trial-to-paid windows resolve, and iOS traffic is measured again.

Pixel-OnlyFirst-Party
Conversions counted1,0101,286 (+27%)
iOS conversionsMostly lostRecovered
14-day trial → paidOften droppedAttributed to click
Match to Stripe MRRPartial91.4%
Recovery, not surveillance

Fixing blocked tracking the compliant way.

Recovering blocked conversions doesn't mean fighting user privacy — it means measuring your own first-party data correctly. Signal Sparrow doesn't do cross-site tracking. You remain the data controller, consent state is respected, PII is hashed before it's forwarded, and data can be stored with EU residency under a GDPR-ready DPA.

  • First-party only

    Your domain, no cross-site tracking

  • Consent-respecting

    Honors your consent framework

  • PII hashed

    SHA-256 before anything is forwarded

  • You're the controller

    EU residency and DPA available

Privacy SafeguardsCompliance
  • Cross-site trackingNever
  • Outbound PIIHashed (SHA-256)
  • EU data residencyAvailable

GDPR-ready processing on your own subdomain.

Reconciled to Stripe

Recovered data you can actually trust.

More conversions are only better if they're real. Every recovered event is reconciled to Stripe — attributed plus direct/unknown equals your net MRR for the period, to the cent — and anything we can't match is shown honestly as Direct/Unknown. You close the data gap without inflating your numbers. Watch it stay closed in pipeline health.

See pipeline health
Reconciled to Stripe91.4% match
Attributed
$42,180
Direct/Unknown
+$6,920

Net MRR in Stripe

=$49,100

Difference $0.00
What recovery delivers

Close the gap GA4 can't.

Conversion data loss closed
10–30%
0%10%30%40%
Conversions recovered vs GA4
+27%
GA4
First-party
Recovered revenue matched to Stripe
91.4%
MatchedDirect/Unknown

Illustrative figures based on typical recovery when first-party server-side tracking replaces pixel-only tracking.

30-minute setup

Fix blocked tracking in 30 minutes.

Add the first-party snippet, point a subdomain at Signal Sparrow with one CNAME, and connect Stripe over OAuth — no data team, no manual API keys, no sales call. You'll see recovered conversions, reconciled to Stripe, within half an hour.

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Setup0 of 3
index.htmlPaste once
<script async
  src="https://data.yourdomain.com/sp.js">
</script>
2DNS recordVerifying

CNAMEdata→edge.signalsparrow.com

3StripeConnect
First conversion, reconciled to Stripe

Questions, answered.

Everything teams ask before switching their attribution to Stripe truth. Still curious? Talk to us.

Four privacy mechanisms drop client-side data: iOS App Tracking Transparency, Safari and Firefox ITP (which cap JavaScript cookies to as little as 1–7 days), ad and content blockers that filter tracker domains, and consent banners that gate tags. Together they can hide 10–30% of conversions.

Because tracking is served from your own subdomain and events are recorded server-side, blockers that filter known third-party tracker domains don't match it, and browser cookie caps don't apply. The conversions that pixels lose are captured on the server instead.

Most sites lose an estimated 10–30% of conversions to the combination of iOS, ITP, blockers and consent gating. For trial-led SaaS the gap is often worse, because the paying conversion happens days later — after the pixel cookie has already expired.

Yes. This is first-party measurement, not cross-site tracking. You remain the data controller, consent state is respected, PII is SHA-256 hashed before forwarding, and data can be stored with EU residency under a GDPR-ready DPA.

Yes. Because events aren't bound to short-lived browser cookies, a click on Safari and a conversion weeks later still resolve to the same customer — so long trial-to-paid windows are attributed correctly instead of lost.

It closes the gap at the source by capturing first-party, server-side events that GA4's client-side collection misses, and can stream those recovered events into GA4 — so your analytics reflect what actually happened, not just what the browser allowed.

Ready to see which ads actually pay?

Start free, connect Stripe in 30 minutes, and get attribution that reconciles to the cent.

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  • Free to start — no credit card
  • Live data in 30 minutes