Electrum is preinstalled and you can install more apps into Tails if you want, you just have to be really careful and it's heavily discouraged if there's a way to do it with existing apps. E.g. DNM Bible has a tutorial for installing Monero GUI...

nout

Bitcoin wallet available for persistent storage:  https://tails.boum.org/doc/anonymous_internet/electrum/index.en.html

It would be awesome if Persistent Storage had a non-custodial wallet available (e.g sparrow wallet)

Edit: apparently they have a Montero wallet available 

https://tails.boum.org/doc/advanced_topics/feather/index.en.html

bitcoin

Tails - Tails 5.0 is out

CypherPoet

It would be awesome if Persistent Storage had a non-custodial wallet available (e.g sparrow wallet)

Edit: apparently they have a Montero wallet available https://tails.boum.org/doc/advanced_topics/feather/index.en.html