For bitcoin I'd recommend SENTINEL app that is maintained by Samurai wallet devs. With it you can track single address or yet even HD wallets. I've been using this one and it is great, simple app with nice interface to use. Here is the link if you are interested: https://play.google.com/store/apps/details?id=com.samourai.sentinel&hl=en

For ethereum simple app that will let you track your ethereum holdings with erc20 token this works, not the best UI but works: https://play.google.com/store/apps/details?id=com.pazhukov.ethwatcher


For both Ethereum and Bitcoin and other coins you might want to take a look at this one: https://play.google.com/store/apps/details?id=com.codit.cryptowatchwallet although I think it does not have support for tokens on eth network.

Well I use android and this is the case why I only know about android apps. There are prob others made for IOS but I don't know about them, nor I have tried any of those.