We've been talking about IMMORTAN LIBRARY, a mobile-focused Lightning network stack built with Scala.
Immortan library makes it possible to have actual self-custodial lightning nodes on mobile devices. No LSP needed, no bridges.
We also built Hosted Lightning channels with IMMORTAN Library. With Hosted channels, you can open anonymous custodial channels to a a Host (Lightning node runner). It is an easy and cost effective to onboard users on Lightning.
We've all of these implemented on Valet Bitcoin, our lightweight, mobile Bitcoin/Lightning wallet:
https://github.com/standardsats/valetMight want to check out IMMORTAN here:
https://github.com/standardsats/immortan