Update on March 21, 2022 - the app hangs when I pause the narration, and no amount of closing and restarting the app lets me restart listening... it eventually and randomly resets for normal playback at its own leisure. The most recent update introduced bugs. The app works well enough, but gosh golly, it needs to allow me to save data on the SD card. The audiobooks take up a lot of internal memory. Please, developer, please update the app so the exporting data feature on my android works!!