We are always trying to avoid any crashes in the app.
If it does happen, we are very sorry and will try everything to solve the problem as soon as possible. You can help us finding the problem by describing the bug in detail (When does the app crash? After a certain action, e.g. when adding a card?) and send it to us at firstname.lastname@example.org.
Please do not reinstall the app! All your cards will be lost when you uninstall Stocard on your phone. Please make sure to either wait for the next update which will fix the problem or to only reinstall the app when you made a backup with the Stocard Backup beforehand.