Snapchat's frequent crashes could be due to an outdated app, phone storage issue, or a software bug. First, update Snapchat. If it's already updated, clear the cache: Android users can do this by going to "Settings > Apps > Snapchat > Storage > Clear Cache". iPhone users can uninstall the app and then reinstall it. If the crashing issue continues, restart your phone or check if your phone's OS is up to date.