What problem does it solve? Converting free users to paid customers requires well-timed, well-designed upgrade prompts, and poorly executed paywalls either annoy users or fail to convert. This Skill provides frameworks, copy templates, and experiment ideas for in-app paywalls, upgrade screens, and feature gates. ## Core Features & Use Cases - Paywall Design Patterns: Ready-to-use layouts and copy for feature locks, usage limits, trial expiration, soft prompts, and team upgrade screens. - Trigger and Timing Strategy: Guidance on when to show upgrade prompts based on aha moments, usage thresholds, and frequency capping rules. - A/B Testing Playbook: Dozens of experiment ideas covering pricing presentation, headlines, CTAs, trial structure, and personalization. - Use Case: A SaaS founder wants to improve free-to-paid conversion. Use this Skill to design a usage-limit paywall with value-focused copy, an escape hatch, and a metrics plan to measure upgrade completion rate. ## Quick Start Write the copy and layout for a paywall that appears when a free user hits the 3-project limit in my SaaS app.