The best alternatives to Story Slicer for iOS are Buffer, Instagram, and Rewind for Instagram. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Story Slicer for iOS?
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Story Cutter helps you to create stories out of your long videos! it will split that long video into separate segments with the required length by the social media platform you would like to share your video.