Unlike the other tools here, this one does not work on its own. It reads from the Google Analytics Data API v1 and therefore asks for a Google sign-in. The permission requested is analytics.readonly — read-only, so nothing can be changed through it.
What it fetches stays in this tab: the evaluation runs in the browser, and nothing is sent to lukaswojcik.com. The OAuth Client ID below is prefilled and can be replaced with one of your own.
Connect directly to the Google Analytics Data API v1 via OAuth 2.0 to scan standard property metrics for statistical anomalies, sudden traffic spikes, or tracking drops. All Z-score statistical calculations execute locally in your browser — zero analytical data is stored or transmitted to our servers.