You can. The author made the source code of the app itself available: https://micahflee.com/heres-the-source-code-for-the-unofficial-signal-app-used-by-trump-of

You can. The author made the source code of the app itself available: https://micahflee.com/heres-the-source-code-for-the-unofficial-signal-app-used-by-trump-officials/ https://micahflee.com/heres-the-source-code-for-the-unoffici...