Two applications locked my phone up how can I fix this?

Hard reset it(this will remove the data), here is how to hardset Samsung Galaxy S7:

Turn off the device.

Press and hold the Volume Up key and the Home key, then press and hold the Power key.

When the device logo screen displays, release only the Power key

When the Android logo displays, release all keys ('Installing system update' will show for about 30 - 60 seconds before showing the Android system recovery menu options).

Press the Volume down key several times key to highlight 'wipe data / factory reset.'

Press Power button to select.

Press the Volume down key until 'Yes -- delete all user data' is highlighted.

Press Power button to select and start the master reset.

When the master reset is complete, 'Reboot system now' is highlighted.

Press the Power key to restart the device.