I've previously posted about my custom Mint.com setup, optimized for getting a clear snapshot of your personal finances. Unfortunately, one of this setup's shortcomings is that it doesn't directly integrate stock data from Robinhood. This is because, unfortunately, at this time there is no direct Robinhood Mint integration (despite high user demand for the feature)
Want a workaround? Mint gives you a way to add custom properties. You can enter your Robinhood account amount as a custom property in order to have it show up in your net worth and trends tab.
How to add your Robinhood stocks to Mint
1. Go to "Add Accounts"
2. Select "Add a Property"
3. Add your Robinhood amount
You can now go through the flow of adding your Robinhood account as property. It doesn't really matter what you choose (I randomly chose a "collectible") during this steps. No matter what, you'll end up at a screen where you can enter your entire Robinhood account value.
If you haven't heard of Robinhood, I recommend checking it out: the app provides zero-fee stock trading, with a truly wonderful user experience.
It's also worth noting that Wealthfront does provide an integration with Robinhood. Additionally, Personal Capital provides a way to manually enter stocks, so you can at least enter which stocks you've bought on Robinhood and track them over time (you'll have to update them manually whenever you buy or sell, of course).