For quick'n'dirty stuff:

    - VSCO
    - Priime
    - RNI films

For more advanced post processing:

    - Polarr
    - Dark Room
    - CameraBag Mobile

If I don't have my camera with me, I use Halide for taking photos. For timing, occasional astro and other stuff I use Helios and Photo Pills.

On the desktop side I use CameraBag Pro and Darktable mainly. I occasionally use Luminar.

I started photography with analog in the 90s, so I really dig the atmosphere different emulsions or curves add to the photography and, I use these tools to create the feeling I want to create with my images.