It could be a native mobile app, but in that case you’d need to think about platforms, the App Store, and so on.

A progressive web app could be a nice alternative: just add the website icon to your phone, and you can open it in seconds.

The app could be self-hosted on a home server, and solutions like Tailscale would let you easily access it outside the house as well. A big plus is that you can open it on all your devices and have a unified database across them.

With a web app, you could even keep the TUI aesthetic - just style it like a CLI interface.