Pricing

Recover 30–40% of lost conversions.

Server-side tracking for GA4 & Meta CAPI — bypasses ad blockers, iOS restrictions, and cookie limits. One plugin, every platform.

◯ Free for 10 orders or 10 days — no card needed
Works on: WooCommerce  Â·  Shopify (Q3 2026)  Â·  Magento (Q4 2026)  Â·  BigCommerce (Q1 2027)

Learn how SignalStream works →

Monthly Annual  Save 2 months

Starter

For growing stores

Up to 500 orders/month. Everything you need to start recovering lost conversions.

$ 49 /mo
$ 40 /mo

Billed monthly

$490/year — billed annually

Save $98/year — 2 months free  
500 orders / month
  • GA4 Measurement Protocol
  • Meta Conversions API (CAPI)
  • Server-side deduplication
  • First-party subdomain proxy
  • Live EMQ dashboard
  • Google Consent Mode v2
  • Email support

Scale

For enterprise & agencies

Unlimited orders. White-label dashboard, BigQuery export, dedicated Slack support, and SLA guarantee.

$ 199 /mo
$ 165 /mo

Billed monthly

$1,990/year — billed annually

Save $398/year — 2 months free  
Unlimited orders
  • Everything in Growth

  • BigQuery event export
  • White-label dashboard
  • Dedicated Slack channel
  • 99.9% delivery SLA
  • Agency sub-accounts (coming Q3 2026)
  • Custom event mapping

30–40%

More conversions recovered vs pixel-only tracking

8+

Meta EMQ score achieved — correlates with 20–40% better ROAS

10 min

Average setup time. No GTM, no custom code, no server infrastructure

Everything included on every plan

No credentials in the plugin

GA4 & Meta keys stored in your account portal — not in the plugin file. Can’t be exposed by file access.

Ad blocker bypass

Server-to-server connections can’t be blocked. First-party proxy routes browser events through your own domain.

Automatic deduplication

Shared event_id between browser pixel and server CAPI prevents double-counting in Meta and GA4.

iOS 17 & Safari ITP ready

Server-side events are completely unaffected by Apple’s Intelligent Tracking Prevention.

GDPR & Consent Mode v2

Reads from CookieYes, Complianz, Cookie Notice. All PII is SHA-256 hashed before leaving your server.

Live EMQ dashboard

See your Meta Event Match Quality score per event type — the metric that directly predicts ROAS.

Frequently asked questions

Is this plugin really free?

SignalStream is fully functional for your first 10 orders or 10 days, whichever comes first. No credit card required. You will see real recovered conversions in your GA4 and Meta dashboards during the trial. After the trial, plans start at $49/month.

What counts as an order in the trial?

Each completed WooCommerce order that SignalStream successfully forwards to GA4 or Meta counts as one trial order. Test orders, cancelled orders, and events blocked by consent settings do not count toward your trial limit.

What happens when my trial ends?

The plugin displays a notice showing how many conversions it recovered during your trial and invites you to subscribe. Events after trial expiry are logged locally so you can see exactly what you missed. Subscribing restores full tracking immediately.

Will this work if my customers use ad blockers?

Yes. Server-to-server connections between the harperservice.tech relay and Google/Meta cannot be intercepted by browser ad blockers. The first-party subdomain proxy additionally routes browser-side events through your own domain, defeating domain-based blocking rules.

Will this cause double-counting in Meta or GA4?

No. SignalStream generates a unique event_id shared between the browser pixel and the server CAPI call. Meta uses this to merge duplicate signals into a single conversion. In GA4, the transaction_id serves the same deduplication purpose.

Which payment gateways are supported?

SignalStream hooks into WooCommerce’s payment_complete event, which fires regardless of gateway — Stripe, PayPal, Square, Klarna, Afterpay, bank transfer, and all others. Off-site redirect gateways benefit most because the browser tracking session is lost during the redirect but the server hook fires reliably.

Can I use this on multiple stores?

Each licence key covers one store domain. For agencies or multi-store merchants, the Scale plan includes agency reseller pricing — contact us at harper.agency/support.

Start recovering lost conversions today

Free for 10 orders. No credit card. Set up in 10 minutes.

Get started free →