Filmst (contraction of film and list) is a simple app to keep track of your rolls of analog film.
You take a picture of the roll with the camera when you finished it, the app helps you keep a chronological list of these with the exposure iso indication until they are developed, in a tidy fashion, simply in a photo album on your device.
No complex machinery, simple and basic, but a robust archival helping tool (made the app for my personal use originally, but had requests to make it public).
Hope you find it useful.
This app is free, so if you do and wish to support, feel free to purchase one of my other photo apps thanks! ;)