What problem does it solve? Free users often never convert to paid plans because upgrade prompts appear at the wrong time, communicate weak value, or use pushy patterns that erode trust. This Skill provides structured guidance for designing in-app paywalls and upgrade flows that convert without annoying users. ## Core Features & Use Cases - Paywall Design Frameworks: Provides screen component templates (headline, value demonstration, plan comparison, social proof, CTA, escape hatch) for feature gates, usage limits, and trial expiration moments. - Timing and Frequency Rules: Defines when to trigger upgrade prompts (after aha moments, at genuine limits) and how to cap frequency to avoid frustrating users. - A/B Testing Playbook: Ships a references/experiments.md catalog of test ideas covering triggers, pricing presentation, copy, trials, and personalization. - Use Case: When a free user tries to create a 4th project on a 3-project plan, use this Skill to design the upgrade screen with loss-framed copy, a plan comparison, and a clear escape hatch. ## Quick Start Ask the assistant to design an upgrade paywall for your product's specific trigger point, such as a usage limit or trial expiration screen.