Pro On Go
If the paid version of Expensify appeals to you, and you use Quickbooks, take a look at Pro On Go. You can do a lot of the same stuff – track mileage, record and take pictures of receipts… you can track time, and it’ll even connect with Google Calendar to help you track billable hours.
Concur (iOS, Android) is also a paid service at $8/month with a free trial, but it’s got pretty much everything you could want. Track your expenses like you do in the other apps and attach pictures of the receipts. You can even email your digital receipts to include in the reports.