@okwithmydecay A bit different, but I've also tried Photon Camera, it's an open source camera app, so not really a photo editing app, but it has many LUTs built-in, and you can configure your own, so it can also be a solution, and I've used it for several months with no issue whatsoever.
https://alternativeto.net/software/photon-camera-app/about/
AlternativeToPhoton Camera App: Open-source Android camera application focused on static photographyPhoton Camera is an open-source Android camera application focused on static photography, designed to simulate the handling and image quality of modern mirrorless digital cameras.