QBO app on iPhone no longer showing calculator within invoices. Crashes when saving

Hi there, Jim. Let's perform some basic troubleshooting steps to improve the application's performance and resolve unusual behavior, such as missing functionalities and unexpected crashes when saving transactions.

First, please ensure you're connected to the internet, then follow these steps:

1. Go to Settings.
2. Select Settings General iPhone Storage.
3. Choose the Offload App button.

If the issue persists, we can uninstall and reinstall the app to start fresh.

Feel free to leave a comment if you need any further assistance with managing QuickBooks transactions.