Well, maybe you do.
If you have a smart phone, it is actually a computer.
If you are trying to get the latest offers from Ibotta for Back to School, you can open a Chrome browser on your phone and go to ibotta.com. Sign in with your Ibotta email and password. You should get notified about the new promotion. Wait up to an hour and you will get the offers in your Ibotta app.
Hope this helps.