What problem does it solve? Free users often never convert because in-app upgrade prompts are poorly timed, generic, or pushy. This Skill provides structured frameworks for designing paywalls, upgrade modals, and feature gates that convert free users to paid without damaging trust. ## Core Features & Use Cases - Paywall Design by Trigger Type: Frameworks for feature gates, usage limits, trial expiration, and time-based prompts, each with screen component templates and copy guidance. - Timing and Frequency Rules: Guidance on when to show upgrade prompts (after value moments, not during onboarding) and how to cap frequency to avoid annoying users. - A/B Testing Playbook: A references file with experiment ideas covering triggers, layout, pricing presentation, copy, trials, personalization, and frequency capping. - Use Case: A product manager notices trial-to-paid conversion is only 2%. The Skill diagnoses the weak trial expiration screen and recommends showing user accomplishments, loss framing, plan options, and social proof. ## Quick Start Ask the assistant to design an upgrade paywall shown when free users hit your plan's usage limit, including headline, plan comparison, CTA, and escape hatch.