Hello annethedosser.
Thank you for using Apple Support Communities. If you're experiencing battery life issues with one specific app, we can recommend some steps you can try to help maximize your battery life. First make sure the app is fully updated: How to manually update apps on your Apple device - Apple Support
1.) Open the App Store.
2.) Tap your profile icon at the top of the screen.
3.) Scroll to see pending updates and release notes. Tap Update next to an app to update only that app, or tap Update All.
You can also apply these settings to help out: Maximizing Battery Life and Lifespan
Background Activity. This indicates that the battery was used by the app while it was in the background — that is, while you were using another app.
To improve battery life, you can turn off the feature that allows apps to refresh in the background. Go to Settings > General > Background App Refresh and select Wi-Fi, Wi-Fi & Cellular Data, or Off to turn off Background App Refresh entirely.
Additionally, you can also try to delete and reinstall this app as well to help refresh things:
-Delete app: Remove apps from iPad - Apple Support
-Redownload app: Redownload apps and games from Apple - Apple Support
We hope these steps help you. Thank you for using Apple Support Communities.