Voted with: Not Interested at all.
There are dozens of apps in the market which do the same and trust me, they keep popping up in this section every other day. I'd rather have my own excel sheets and charts over an app that will have access to my confidential data.
I'd be interested in an app which helps me getting the forked coins without needing to copy all the addresses.
The app won't collect any confidential data about users and It's going to be open source so anyone could verify that.
I answered with: Depends on which coins are supported.
It's true that there are already similar apps, but I haven't actually found one that I like using.
The UI is a big factor for me whether I'd use it or not.
It should be lightweight and have a very clean interface. I know that's not too much detail, but I don't know yet how this perfect app would have to look for me to use it.
I'm planning to make something using Material design, so It will be clean.
As for the coins, I was thinking about BTC, LTC, Ethereum and most of the ERC20 tokens.
I'd use it. I use a watch-only Electrum wallet to watch my cold storage. If there was something more advanced to watch both hot & cold wallets, I'd definitely consider it.
Make sure the code is open-source if you do go ahead with this. If I wasn't able to validate the source I probably wouldn't run it on my computer TBH.
I'd make the reco: Create it open-source & try it with Bitcoin. If there's demand, maybe start including other cryptocurrencies.
i wouldn't use it because i don't have a "portfolio". all i have is bitcoin and for that i have watch only wallet(s). but i would like to point out that it depends on two important factors:
1. being open source. and runs smooth and fast.
2. the way it retrieves your information such as balance. if it fetches the information from block explorers then it is nothing new. so why bother making it? but if it is communicating with nodes and is something like an SPV watch only wallet then it can be different because i don't know any app like it yet. although altcoins don't have a lot of features that bitcoin has (bloom filters for starters) so it may not even be possible.
The application will be open source as mentioned above. I wouldn't use the app myself If It wasn't.
As for the way it retrieves the info, I'm not sure how is that important, to be honest. I doubt the average user would care about how the app gets the information. If I ever use full node etc. It could cost money and I'm not sure I could afford that for the long-term.