Stack Duo is a fully open source cryptocurrency wallet. It's a stripped down version of Stack Wallet that only has Bitcoin and Monero. With an easy to use user interface and quick and speedy transactions, this wallet is ideal for anyone no matter how much they know about the cryptocurrency space. The app is actively maintained to provide new user friendly features.

Highlights include:

Bitcoin and Monero included
All private keys and seeds stay on device and are never shared.
Easy backup and restore feature to save all the information that's important to you.
Custom address book
Favorite wallets with fast syncing
Custom Nodes.
Open source software.