# Paywall Desk > An in-app paywall and upgrade-screen workbench for founders, product managers and growth leads: paste the feature gate, usage-limit wall, trial-expiration screen, time-based prompt or tier upsell your free or trial users see, plus what triggers it, and find which of the seven paywall components are missing, which dark patterns and conversion killers it carries, whether it fires before the user has had value or too often, whether the annual saving it states is true, and where the funnel leaks; then get an audit with the fixes in order, and the redesigned screen with when and how often to show it and the tests to run. App: https://paywall-desk.skillsafe.ai/ API tutorial: https://paywall-desk.skillsafe.ai/api.html ## Input - The screen: every line the user sees, top to bottom, buttons in [square brackets] and images as [Image: what it shows]. A saved HTML page is reduced to its text, with