Signed up for it, just to see what it was like. Scanning a receipt was too much of a hassle. I still had to hunt on a long list for that one item that was eligible.
Now I'm getting emails that they're going to charge me a $3.99 maintenance fee unless I start using the app again. Supposedly they'll keep doing this every month until my Ibotta account reaches $0. Shouldn't take too long. I never earned any savings to add to the account.