Welcome to the QuickBooks family, @mc126837.

I can provide some information about using the QuickBooks mobile app.

Since the mobile version isn't available to all countries, there's no direct link for the mobile app download. Instead, I suggest visiting the Apps Store or Google Play to search if your region is supported, and from there, you can download the app.

For iOS app:

1. Open the App Store on your device and search for QuickBooks Online. (It may not be available for some countries).
2. Select Free, then Install.
3. If you are already signed up for QuickBooks Online, use the same user ID and password to sign into the app.
4. You may be asked to confirm a one-time confirmation code to confirm your identity. Once confirmed, you can continue into your account.

If you're using an android phone:

1. Open Google Play on your device and search for QuickBooks Online. This app works on smartphones and tablets. (It may not be available in some countries).
2. Select Install.
3. If you are already signed up for QuickBooks Online, use the same user ID and password to sign in to the app.
4. You may be asked to enter a one-time code to confirm your identity. Once confirmed, you can continue into your account.

For additional reference, I've attached an article about the mobile app features: Compare mobile app features.

Please know that I'm just a post away if you have any other questions. Have a great day ahead.