In Affinity Designer, the absence of a continuous corner radius tool limits the efficiency of designing UI elements. I strongly recommend the addition of this feature to facilitate the creation and iteration of UI designs. Consistent corner rounding plays a vital role in achieving a polished and cohesive look in UI design. Moreover, designing icons or UI elements for iOS, which extensively uses continuous corner radius throughout its entire operating system, requires the ability to apply continuous corner radius. By incorporating a continuous corner radius tool in Affinity Designer, designers would gain the capability to precisely adjust multiple corners simultaneously, with varying radii, resulting in smooth and visually appealing user interfaces. This enhancement would empower UI designers and elevate Affinity Designer's capabilities in the field of UI design.
Figma has a similar feature.