Yolk is a free, thoughtfully crafted mobile UI kit designed exclusively for Sketch. Created to help designers kick-start their projects with a solid foundation, Yolk combines clean layouts, modern visual styles, and practical interface elements that are easy to customize and adapt.

The kit includes 42+ carefully designed mobile screens covering a variety of common app experiences, giving you plenty of inspiration and ready-to-use layouts for your next project. Each screen is structured with usability and flexibility in mind, making it simple to edit colors, typography, spacing, content, and other visual elements to match your own brand or product.

Whether you’re exploring a new app concept, creating wireframes and prototypes, or looking to speed up your design workflow, Yolk provides a versatile starting point that helps you move from idea to polished interface faster. Best of all, it’s completely free to use, making it a great resource for both beginners and experienced designers.