I've looking around from a Long time seeking on what are supposed to be the best Tool for people Who are In da Club.
I have to say that really there are Tousand of instruments but most of them are useless.
I'm speaking even about Mobile application then laso about PC Websites.
I've tried tousand of them with al API access and more but I'm nt going to speak about every one of that cause it will take forever.
So Here some Tips.
Personaly I use Coinigy https://www.coinigy.com/ (For Trading (yeah I know Is not free, but after you'll have tested it out with the 30 days trial you'll never dump it)
I personaly love because You can control all your market With a single Interface, just connect all the API: kraken, bittrex, Poloniex etc...
You can set all the stop loss very easly without loosing them on the pat because like 85% are going right.
The charts I think are the most Advanced ever, you also Have a collection of interesting tool like arbitrage matrix that let you know all the spreads between market on the same coins.
What i Really Like is tht It can show you all the balance available everywhere, so If you Have tousands of bags quite everywhere you gonna see them all in one single balance.
the best one is tht you can even check the balance of YOUR WALLETS! so even you store them out of market you just need to give the public key and then you will see alo that balance.
PRICE MONITORING AND ALERTS
I was always using coin cap. io, since i discovered the unofficial app of Coinmarketcap on android https://play.google.com/store/apps/details?id=io.coinmarketapp.app&hl=it is just beautiful because you can see clarly all your holdings and also all the currencies but the extra one is that you can see all the 1 week chart related to better analyze the trends.
But for monitoring the price is not enough, so Here's the best app for balance and price monitor 200 times better that blockfolio.
Is called COIN ALARM https://play.google.com/store/apps/details?id=io.coninalarm&hl=it i think is the best of the best because it works in a similar way like coinigy for the balance, so with the api you can see all the balance, but is a killer app because you can set the price goal on the coins. it will show s you in a timeline how far are you from that point, and in % how much it gained or losted to reach the goal, even with customized sound alarm.
Soon I gonna give you more tools.
Enjoy