I use TruConnect for mobile broadband. They use a per MB pricing model with no monthly contracts. It's a little pricey for power users, at 3.9 cents/MB, but g

I use TruConnect for mobile broadband. They use a per MB pricing model with no monthly contracts. It's a little pricey for power users, at 3.9 cents/MB, but great for my once or twice a week usage. My monthly bill is around $10. One thing the article mentions is a lightweight API to check how much data you used in the last ten minutes. Truconnect has an app, http://www.truconnect.com/manage-my-mifi/ http://www.truconnect.com/manage-my-mifi/ , that let's you track that. It works with any MiFi, but prices are tuned to Truconnect. DISCLAIMER: I have a business relationship with Truconnect, as the author of the above app. I do however, eat my own dog food and find it to be a good service and a useful app.