What app keeps a copy of a Reel or TikTok so I still have it when the creator deletes it?

Screen Recording is built in. Add it to Control Center, play the video and record it. The clip lands in Photos, stays there if the post disappears, and needs no extra app. Crop it afterwards if you like.

TikTok offers a Save video option on posts where the creator has allowed downloads, and Instagram lets you save your own Reels. Third-party download apps and sites exist, but they come and go, and many ask for broad access, so read the reviews before you use one. On a computer, the open-source tool yt-dlp can save videos from many sites.

Personal copies are one thing. Reposting someone else's video is another, so respect the creator's rights and each platform's terms.

Nemos can still help around the clip. Save the link for context, write down the steps or quote in a note, or screenshot the key frame so its text is searchable. Those survive even if the original goes away.