Verizon Data Control Feature - Any Alternates?

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http://forum.xda-developers.com – Not sure where to have put this, but instead of paying Verizon $4.99 every month, is there some sort of app that can be used to limit/cap the data usage on a family member's phone?? With these new data shared plans, I want to prevent the overages by completely stopping the data usage once the set limit is met. We all have a Galaxy Nexus and I know you can put limits on the phone itself, but that wont work because you can change it anytime! Phone is not rooted, but will root it if needed be, thanks. (HowTos)