Is there a way to sync contacts' birthdays with calendar withoug going through a Google account?

[AC Question]

All my contacts are stored on the device (not on my Google account). All the syncing solutions I've encountered so far require syncing my contacts with my google account first. Is there a way to import the birthdays stored in my contacts to a calendar application (any app, doesn't have to be the native android calendar) without having to sync them with my Google account ?