What's going on!
Since yesterday (mon. 22/03/2021) I have received many complaints and also many bad reviews about Life Reminders Crashing or not being able to open it.
After searching what could be the source of this issue, I found many articles on google stating that this is an issue happening to many android apps since yesterday, even google's own apps have this problem.... It is due an update to Android System WebView...
Quick temporary fix
Go settings > apps >tap the three dots in the top right corner > show system apps > search for Android System WebView > select Uninstall updates
If removing the update doesn’t work for you, try uninstalling WebView. To do that, head to the Google Play Store > My Apps & Games > Installed. Android System WebView should appear in this list of installed apps. Tap on it and hit uninstall. You should then reboot your Android device for the best results.
Google says updating Android System WebView and Google Chrome via Google Play Store should now resolve the issue for all users. The Play Store listing for WebView shows Google has pushed out a new version of the apps (ver. 89.0.4389.105). Chrome has also received an update today.