100% on the phone app. Maybe the web app is the phone app? Dunno. Being able to enter information as close to receiving as possible seems key actually. I'll probably poke on this soon.

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.