I can’t download the app. It says there is an error.

Hi madisonholmes-ro,

Welcome to Community!  Downloading the QuickBooks Online mobile app is a dynamic way to work while on-the-go.  I'd be glad to assist!

I recommend following the steps here, to install the QuickBooks Online mobile app on your device.  In addition, here's a helpful guide to assist with common errors.  

If the issue persists, please contact us for further review of the unexpected behavior.  We'd be happy to look further into this from our end, so you can get back to business as soon as possible!

Feel free to reach back out with other questions.  We're here for you!