Use APKPure App
Get Monokrom old version APK for Android
Applicare in bianco e nero della vecchia scuola dithering algoritmi per immagini
Small utility to create stylised monochrome images from your photos. Includes techniques used by old Mac OS and the Gameboy Camera.
This was just a little side-project, it's not been tested, it took a day to build - it works for me on a PixelXL, and it's known to work on a HTC One M7 - but there's no support for any issues you might find.