Can projects be exported and saved to a Micro SD card when using the mobile Rush version?

When using the mobile version of Rush on Android Samsung Galaxy S8+ can projects be saved/exported to the phone's Micro SD card?  It appears to want to only use the phone's internal storage which isn't very large.  I record in 4K/UHD and have extremely large file sizes and videos that are typically up to 2 hours long each.

Thank you.