Muse app data storage getting out of control


After a few months of using Muse, it’s using up 0.95GB of memory. Other than removing the app and losing all the data, how can I free it up from my tablet?

Related, I have a 64 GB expansion (SD) card in my tablet, but the Muse app will not let me transfer it to the card and instead forces me to use the local storage (which is only 16 GB total). Can you please let the Muse be hosted on the expansion card?