Hello AndyC44.
Thank you for using Apple Support Communities and for sharing these details with us. We want you to have a good experience when using your new iPhone 13 Pro. Allow us to Allow us to investigate this issue and assist in any way we can.
To confirm, is this issue only occurring with the Gmail and Google Maps apps or does this issue occur with other apps, like the Weather app that is already built-in? If this issue only occurs with these two specific Google apps, we can share a helpful resource with you below:
If an app on your iPhone or iPad stops responding, closes unexpectedly, or won’t open - Apple Support
First, you'll want to follow all the steps listed within this specific resource. It does advise you to delete and reinstall the apps that are experiencing issues. If after following these steps you notice that your issues continue to occur, you might want to reach out to the app developers for assistance. Just in case, the link below can show you how to reach them:
How to contact an app developer - Apple Support
We hope this information is useful. Cheers.