Ask master password after some period when only using fingerprint on mobile

When unlocking the mobile application with the fingerprint scanner, you no longer have to enter the master password, which is great but this may lead to forgot the master password.

Since it’s not possible by nature to recover the master password (and this is great), it would be nice to ask for the master password after some time (like 10 times or so) when using only the fingerprint scanner.

Options (!) like asking for the master password after reboot, after 1 hour, 1 day, 1 week, 1 month would be nice. But it should still only be an option. I type my master password often enough on multiple browsers, desktop clients and sometimes even the web frontend. For me it would be burden to have to enter in on mobile regularly.