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Conversion data control

Detect what’s missing and what changed in your conversion data before you decide

TraceLog records your conversions and the steps before them independently of GA4, and checks every day that they still arrive. It alerts you when one stops.

Free up to 10,000 sessions a month. No card.

TraceLog alert detail showing a declared conversion step that stopped arriving and the days affected.
Real interface, cropped · Example data.

A stable total can hide a missing step

Your site can keep working while part of the measurement stops.

  1. 1

    A site update changes checkout

    A declared step stops arriving.

  2. 2

    One segment stops arriving

    One channel, campaign or device stops sending events.

  3. 3

    Total still looks stable

    The overall rate can hide the incomplete segment.

Illustrative pattern. No customer data.

Declare it once and TraceLog checks it every day

Conversion path verified
  • checkout_started
  • purchase_completed
Example data.
  1. 1

    Define what should arrive

    Name each conversion and the steps before it.

  2. 2

    Verify the installation

    Add TraceLog's snippet and complete the path once; a mismatch says what to check.

  3. 3

    TraceLog watches it every day

    An alert names the days a step stopped arriving.

What is missing, what changed and what came after

Your purchase_completed rate fell in one segment — Channel: Paid social — 31 fewer sessions reached purchase_completed than the baseline rate would have produced over 3,140 sessions.

Evaluated, Jan 5, 2026 – Jan 11, 2026
1.8 % of 3,140 sessions
Baseline, Dec 8, 2025 – Jan 4, 2026
2.8 % of 14,600 sessions
Example data.
  • Free

    Incomplete days, named instead of counted

    When a step stops arriving, TraceLog hides the figures that count it over those days and names the days instead.

  • From Pro, €39 a month

    Which segment fell

    With enough traffic, TraceLog names the conversion, step or segment that fell.

  • Every plan

    What you changed, and what came after

    Record what you changed on an alert. TraceLog puts what it observed afterwards beside it; the order alone proves no cause.

TraceLog checks its own record and nothing beyond it

  • Checks every declared conversion path once a day.
  • Names which of its own figures are left incomplete.
  • Says so separately when the fault is TraceLog's own.
  • Reads no GA4, Meta or Google Ads account.
  • Infers no cause and prescribes no fix: what you change is your decision.
  • Never samples, and never stops capturing at a limit.
  • Installs no tracking cookie: it captures the conversion path, not the website.

Start free, pay to compare

Free alerts you when a step stops arriving. Paid plans show where conversion changed.

For one business

To start

Free

€0 / month

10,000 sessions a month · 1 project

For analysing campaigns

Pro

€39 / month

100,000 sessions a month · 1 project

For more than 100,000 sessions a month

Business

€149 / month

1,000,000 sessions a month · 1 project

For an agency

For agencies with several clients

Agency

€199 / month

1,000,000 sessions a month, pooled across every project · Unlimited projects

You cannot check every client every day. The portfolio says which need attention.

Compare every plan

Answered before you start

How do I install it?

With a snippet on your site. For Shopify or WooCommerce, write to us: the app and plugin are not in their directories yet.

Does TraceLog replace GA4?

No. TraceLog runs alongside GA4, Meta and Google Ads as an independent control. It does not inspect, repair or reconcile their data. It does tell you how many conversions reached it from the server alone and not from the browser. You see it on Shopify, on WooCommerce, or when your server confirms the conversion.

How much traffic do I need?

The free plan is enough to know whether your TraceLog figures are missing data. On a paid plan, detecting a fall takes 1,000 sessions in the week it compares and five weeks of data. A single channel or campaign needs more. Below that, TraceLog stays quiet rather than guessing.

What happens if I go over 10,000 sessions?

TraceLog keeps capturing the declared conversion path without sampling. At the limit, alerts, answers and the explorer pause.

Does TraceLog use cookies? Where does the data live?

The capture code sets no tracking cookie. After consent, one session identifier lives in the visitor's browser storage. This site sets one cookie, only to remember your language. Conversion data lives in the EU.

Read how access and data are protected

Start free

10,000 sessions a month

Start free

No card.