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https://apps.apple.com/jp/app/genki-studio/id6466343285
これと、hdmi->usbc変換があればiPadを外部モニタにできるって
@masaka iPadで外部モニター、詳細記事きた
iPadが実用的なHDMI入力の外部モニターになる iPadOS 17のUVCサポートで実現 実際に試してみた（要約） - ITmedia PC USER https://www.itmedia.co.jp/pcuser/articles/2309/21/news126.html