Microstockr is an iPhone app for that helps you to track sales on major microstock photography websites. It displays current balance for each agency and a list of latest downloads for photos submitted.
Check out the supported agencies below. This app retails for $2.99/£1.99 and you can download it here.
The developers state that they ‘use only secure connections and we do not submit any info to 3rd party servers, all the information is stored in the device and it’s encrypted’.