What problem does it solve? Free users often never convert to paid plans because upgrade prompts appear at the wrong time, lack clear value messaging, or use pushy dark 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 triggers. - Timing and Frequency Rules: Defines when to show upgrade prompts (after aha moments, at genuine limits) and how to cap frequency to avoid frustrating users. - A/B Testing Playbook: Ships a reference catalog of experiment ideas covering triggers, pricing presentation, copy, trials, and personalization. - Use Case: When a free user hits the 3-project limit in your project management tool, generate a usage-limit paywall with benefit-focused copy, a free-vs-pro comparison, and a clear escape hatch. ## Quick Start Ask the assistant to design an upgrade paywall for when free users hit your plan's usage limit, including copy and layout recommendations.