You are browsing a store on your phone. You finally find the perfect pair of running shoes. The model looks great, the color is exactly what you wanted, and you are mentally already wearing them on…

UX Planet is a platform or publication dedicated to user experience (UX) design, usability, and interaction design. Readers can find articles on UX research methods, design principles, and UX/UI trends. Additionally, they can learn about user-centered design practices, usability testing techniques, and creating engaging digital experiences.

UX Planet

Most e-commerce apps lose customers when products are out of stock by forcing users into passive waiting mode with "Notify Me" buttons. The On Running app demonstrates a better approach by showing contextually relevant alternatives immediately below the size selector when inventory is unavailable. This pattern works by preserving buying momentum, adapting the UI based on stock status, and recommending similar in-stock products. The key insight is treating out-of-stock states as design challenges rather than dead ends, keeping users in active shopping mode instead of ending their journey.

Why Your “Out of Stock” State is Losing You Users

How the On app keeps users in ‘active buying mode’ when inventory runs out

Get Amish Gadhia ’s stories in your inbox

<p>It is just frustrating to be offered another proposal when the product I want is out of stock. I want the product I want. Not the product you want me to buy.</p>


<p>That’s a smart way to think about it. Writing this down 👀✍️</p>
