‘Refuel’ App Makes Sure You’ve Got a Full Tank

Nothing sucks more than realizing the tank's empty on the eve of a barbecue. Unfortunately, determining the level of propane inside the tank is hit-or-miss, unless you've got Refuel. It's a smart tank gauge that hooks up with an app on your smartphone so you'll know when it's time to get a new tank before it's too late.

If you don't have your phone with you, simply tap the gauge and it'll give you an LED reading of the propane level in the tank. Pretty sweet, don't you think?

Get It: $50