That is your miner name, you can change it by adding this line to your password n=workername , where workername can be any name of your choice for example worker_1

The website uses a lot of data on my mobile device, a simple app that would notify you if the profitability is low and my current income etc would be nice, which takes less data.

Does anyone know of an app that accepts the prohashing API found under settings?

Any chance of Prohashing releasing its own app?