What's the best way to find an old TikTok I saved months ago using an app?

Start in TikTok. Open your profile, go to Favorites and then Videos, and scroll. Then try Watch History in Settings if the video was recent enough. TikTok's search may also find it if you remember the creator's name or some words from the caption. You can also request your data from TikTok, which includes lists of links to videos you liked and favorited.

For the future, Nemos changes the problem. Share a TikTok to Nemos, add a short note on what it was, and it arrives with a preview. Search then finds it by your note or its title, alongside your other saves, without scrolling. Nemos does not transcribe the video, so a line of your own makes it far easier to find.

Nemos saves the link and preview. If the creator deletes or hides the video, the link will stop working.

When something else fits better: if you only save a few videos, TikTok's own Favorites and Collections are enough.