All your data are saved on tinder servers. Except to log you, your password is never used, saved or shared with a other service than Tinder
Personal data of my phone
App doesn't access to sms history, browsing history or other data reasonably considered personal, all data comes from Tinder servers.
6tindr only use your geolocation if you have enabled the feature. 6tindr only compute your geolocation one time when you start the app