I moved the iFly app to the card on Nook HD+ running KK 4.3. I use a free app called Link2SD. (You have to use Linux to add a an ext4 partition to your SD card for the app to work.)
I haven't tried it on my Asus running LP 5.0, 'cause that tablet has 32 GB of RAM. I expect it would work. BUT - when I wanted to put the chart data on the SD card on the Asus, I had to root and run a script that changed permissions for SD card writes. (Something about google locking that down with Lollipop.) IIRC, the script was also available on Google Play.