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I’ve been using 1Blocker for years. It used to be a one-time purchase, but now it’s free with many features requiring a subscription.
I do subscribe, though. It’s updated frequently, can block trackers in apps, and syncs settings across all my devices. Its comment block feature has probably kept me sane.
https://apps.apple.com/us/app/1blocker-ad-blocker/id1365531024
It’s just a zip file with a different file extension. Zip a stack of jpegs with filenames that will list them in reading order when sorted alphabetically and then change the extension.