Comment by throwaway82003

For Android, there is one from Peter Sanford (psanford on HN). He implemented the Go version of magic-wormhole, which I think is used by people like tptacek. So I guess it can be trusted.

https://play.google.com/store/apps/details?id=io.sanford.wor...

https://github.com/psanford/wormhole-william-mobile

One disadvantage is that current magic wormhole doesn't support resume but they plan to implement it.

Another app that you might have heard of is croc, but it doesn't seem to be secure:

https://news.ycombinator.com/item?id=27056746