Volunteers collecting data in remote areas and syncing or uploading to Google Form oncr back in network. Many spots in India and other where are out of network.
I have an ultra-specific use-case that I describe in detail here https://yazin.org/experiments/lose-100g-a-day/ (essentially, I use it to track calories). Google Form's web interface gets tiresome when you have to use it 10+ times a day, so I wanted something quick and that works offline (I've had to resubmit that damn form countless times).