Roll Sorter is a photo cleaner for Android: swipe through your camera roll one photo at a time, like slides on a lightbox — left to mark for deletion, right to keep. Your library opens as month-by-month boxes and picks up where you left off. Nothing is deleted until you review the marked photos, and they stay in Recently Deleted for 30 days; undo as many steps as you like. Tools find similar and duplicate photos (suggesting the sharpest shot), screenshots and large videos. Everything happens on your phone: no account, no ads, no uploads. Swiping and albums are free; a one-time lifetime pass removes the daily trash limit and unlocks the tools. No subscription.