Long forms rarely get filled in one sitting. Something interrupts you, you set the phone down, and you need to step away without losing the answers you’ve already worked out. Air Fill lets you save the form as a draft and come back whenever you’re ready, with every answer still where you left it.
The draft stays right on your device, so a long or interrupted fill picks back up exactly where you stopped, every field intact. However long you’re gone, your progress is there waiting when you open the form again.
And it lives in the free tier, so you have it from the very first form you build.