What is Reddit's opinion of Exif4Film?

From 3.5 billion Reddit comments

I use Exif4film phone app, besides noting basic parameteres including any filters and GPS, you can add notes or complimentary picture with phone. You can manage many camera, lenses, films, filters individually. Only one thing I miss: select aperture and shutter speed in half-stops instead of thirds.

There is also new one called Exif Notes, but I don't use it since it doesn't have all the features as Exif4film. Maybe for someone it would be good enough.

Exif4Film