Squeeze as many bytes out of your data plan as possible without racking up dreaded overage fees. A thick horizontal bar monitors your usage, and a Data Doctor button appears and turns red when you're on track to exceed your monthly limit. But fear not: The app will suggest a daily data allotment to sufficiently curb your appetite.
WIRED Compare 3G with Wi-Fi activity.
TIRED Doesn't single out specific data-hogging apps. You can't set alerts for high usage levels.