A while back I posted the macOS version here: https://news.ycombinator.com/item?id=47288007

Now there's a tvOS version. The interesting part was getting artpacks onto an Apple TV without a keyboard, the app runs a small web server on your local network, so you upload packs or browse 16colo.rs from your phone and the TV plays from cache.

Paid this time; the macOS version stays free and open source.

App Store: https://apps.apple.com/us/app/ansi-saver/id6762137767