Depends on your preference.
Exodus can hold other crypto currencies apart from Bitcoin. I guess they are open source too ,you can look up their code on GitHub.
You can get the app from their official site ; 
Exodus Wallet

Mycelium is also nice however the main coin it can hodl is Bitcoin and Ethereum. But if you are searching for a nice Bitcoin wallet the best I would recommend is Electrum. Sparrow is also a nice Bitcoin wallet but I am more familiar with the Electrum interface.