At a glance
Funnel Conversion Drop (>5pp in 24h) is a Nerve Centre alert tracked from PostHog funnel data. It fires when your primary funnel’s end-to-end conversion rate falls by more than 5 percentage points inside a 24-hour window. A swing that large overnight is rarely organic; it usually points to a broken step, a deploy regression, or a tracking failure. This is one of the earliest revenue-at-risk signals PostHog can give you.
Calculation
Calculated automatically from your PostHog data. See the At a glance summary above for what the metric tracks and the worked example below for a typical reading.Worked example
A representative reading of Funnel Conversion Drop (>5pp in 24h) for a typical merchant on PostHog. Suppose your view-to-purchase funnel sat at 3.4% conversion all month, then dropped to 1.9% within a day of a checkout deploy on 14 Mar 26. That is a 1.5pp drop, which would not trip the rule, but a drop from 8.1% to 2.4% on a smaller funnel would. When the card shows an alert, open it, identify the step that lost volume, and cross-reference Biggest Funnel Step Drop-off to localise the break. For deeper investigation, use Vortex Mind to trace upstream causes; for natural-language exploration, ask Ask Viq.Sibling cards merchants should reference together
Reconciling against the vendor’s own dashboard
Where to look in PostHog’s own dashboard: Open your primary funnel insight in PostHog and switch to the trend view to see conversion by day. The 24-hour drop the alert fired on should be visible as a step change. Confirm the funnel steps and conversion window match the profile configured in Vortex IQ. Why the Vortex IQ value may legitimately differ:
Cross-connector reconciliation: complement with sibling cards in the same category for the full diagnostic picture. For divergence investigations, use Vortex Mind.