When there is no enough disk space (smaller than 300M) on device, Recorder Plus will show a warning message like this: “Only *** disk space available.”
Users should manage their iPhone/iPad to get more free disk space so that Recorder Plus can work properly.
First, make sure important data has been backup to PC/iCloud before delete/remove.
The following are suggestions about how to get more free disk space on your iPhone/iPad. (Reference from Apple’s official instructions)
Then you know which app is useless and should be deleted. Always remember backing-up useful date in the app before delete it.
2.Reduce the size of your Photo library by turning on iCloud Photo Library and Optimizing your device storage