Halide has updated its popular camera app for the iPhone with a new macro mode. The functionality is similar to one of the marquee camera features on the new iPhone 13 Pro models giving owners of older iPhones an opportunity to snap their own close-ups.
https://www.notebookcheck.net/Halide-II-camea-app-adds-iPhone-13-Pro-style-Macro-Mode-to-older-iPhone-models-with-a-Neural-Engine.570075.0.html
Can't comprehend how a ML based sharpening/upscaling only works with macro, it should work with any image.