If you're on iOS, check the App Store, the update is already

How to find the App Store Purchased page on iPhone & iPad

iOS App Store Not Loading or Working on Your iPhone? Here's the Quick Fix « iOS & iPhone :: Gadget Hacks

How to update your iPhone apps in iOS 15 - CNET

Is there a way to see the version history of apps on the App Store? - Quora

How to Check If Apps Need an Update on iPhone and Android

Apple Store app for iOS lets users check product availability and order status with their voice

How to view your App Store download history

Update your iPhone or iPad - Apple Support

Writing great App Store release notes, by Freddie Harrison

How to update all apps on iPhone and troubleshoot issues

If you can't download or update apps - Apple Support

Checking the App Store for Updates - Form Connections

Set up Ask to Buy - Apple Support

Why App Store apps are now labeled 'Get' instead of 'Free