You can preview the memory that will be regained before cleaning up the photos
The still pictures remain linked with the albums they were added to.
Live Photos which were offloaded to iCloud are downloaded automatically.
The app is ad-free and will remain free forever because we care!
Good to know
LivePhotoCleaner duplicates the Live Photo as a still picture, and moves the original to the "Recently Deleted" folder of the iOS Photos App. Thus memory will only be reclaimed after the photo is deleted for good.
The still pictures will appear as new pictures in the "Recents" album of the iOS Photos App. There is currently, no way around this, unfortunately.
Live Photos you edited (applied a bounce, loop, or long-exposure effect, applied a color filter, corrected exposure, cropped, etc.) cannot be cleaned up at the moment.