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 detecting the source of the problem by describing the bug in detail (When exactly does the app crash? After a certain action, e.g. upon opening or when adding a card?) and send it to us at firstname.lastname@example.org or email@example.com.
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.