I've been using Quicken self-employed, which is part of QuickBooks, for about five years now. I have seen the online application improved with more useful features, and user interface. I basically use the online version of Quicken to send out invoices, and keep track of business related income and expenses. I particularly like how Quicken syncs between my desktop web browser and my mobile devices.
The invoice feature is very useful because I can send with a single click reminders to my clients about invoice payments, and another click for letting them know their payment was received.
Quicken also processes my financial transactions without requiring constant manual input. once Quicken knows how you want to assign particular transactions, as business or personal, it automatically makes those assignments for each new transaction. You can also use Quicken to assign tags different types of transactions, which is useful for letting you know where and how your spending your money.
Quicken is very useful for giving me an estimation about my quarterly taxes, and there is also a feature for keeping track of mileage. The mileage tracking is easy to use on my iPhone. And parts of the feature are also automated if you choose to set it up that way.
Quick Self-Employed is about $4 too expensive, and it doesn't provide very good support through its online chat system.
Response from Intuit
We'd like to thank you for being a member of the QuickBooks family for the past 5 years. We genuinely appreciate your loyalty and are thrilled to hear that you've enjoyed using the product. Feel free to visit our Community, as it's a fantastic resource for helpful info regarding the product.(https://community.intuit.com/) Wishing you continued success! -Hannah, The QuickBooks Team.