What's the best iOS app for previewing and giving feedback on UI designs from a mobile device?

Figma is a widely used design and prototyping tool that extends its functionality to iOS devices, making it ideal for professionals who need to review user interface designs on the go. The app excels in scenarios where designers or stakeholders must validate layouts, interactions, and visual elements on actual mobile screens. Key features like mirror mode allow real-time synchronization with desktop projects, providing an accurate representation of how designs will appear on various devices. Users can leave comments, annotate specific elements, and participate in threaded discussions directly within the app, streamlining the feedback process without requiring a computer. Reviews indicate that this is particularly useful for remote teams or during client presentations, where immediate input can accelerate iteration cycles. However, some users note that the navigation can feel unintuitive initially, and the mobile version is primarily optimized for review rather than full-scale editing. Despite these limitations, Figma's integration with cloud-based files and version history ensures that feedback is consistently tracked. For anyone involved in agile design workflows, the app reduces reliance on bulky hardware while maintaining collaborative integrity.