Show HN: NanoUI – A small native macOS app for generating images with OpenRouter (github.com)

A new native macOS application called NanoUI has been released, designed for generating images using OpenRouter's Image API. Built in SwiftUI and optimized for Apple Silicon, NanoUI features support for 16 various image models, including advanced options like GPT-5 Image and Seedream 4.5. The app allows users to customize generation settings such as resolution, aspect ratio, and quality, which are contextually available based on the selected model. Key functionalities include image-to-image editing with up to 14 reference images, multi-image generation, and intuitive zoom options for previewing results. The significance of NanoUI lies in its accessibility and functionality for AI/ML developers and creatives looking to leverage advanced image generation techniques without the need for complex setups. With a straightforward interface and no external dependencies, it enhances the image creation process by providing flexible per-model controls and easy integration with OpenRouter’s API. This streamlined approach helps democratize access to sophisticated image generation tools, encouraging experimentation and innovation within the AI/ML community.