Below are some common reasons the app may be crashing and solutions for them. Please submit a ticket with specifics of what you were doing when the app crashes (include a screenshot if possible) if these don't resolve the issue.

The app crashes immediately when I attempt to open it (Android)

Have you recently gotten a new phone or restored from a backup for some reason? If so, this is likely related to the app migration process. Try going to Settings app > Apps > Precise Petcare > Storage and then use the "Clear data" option.

The app crashes when I am typing notes on journals (Android/Samsung)

This may be an issue with Grammarly for the Samsung Keyboard. You can disable Grammarly for the app using the steps found at https://support.grammarly.com/hc/en-us/articles/5009674207245-How-to-turn-off-Grammarly-for-Samsung-Keyboard-.