I used blockfolio in the past, but now I'm using Delta[1]. It pretty much has more features and I personally really love the user interface. I've been hearing good things about Cryptonaut[2] too, cryptonaut is sort of like the noob-friendly version of blockfolio. I suggest trying them both out. Both apps available on Android and iOS.

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[1] https://getdelta.io/
[2] https://www.cryptonaut.org/