No, you don't need a Bluetooth thermometer to keep tabs on your steak from 200 feet away. But the one-upsmanship of backyard cooking is rarely about need. The iGrill uses a probe wired to a digital readout that you hang on the outside of your cooker. Read the temperature there or download a free app that turns your iOS device into a heads-up display for the inside of your grill. We set out to prepare a perfect medium-rare rib eye, which the app's built-in guide told us would be 125 degrees at the core. It then produced cooking instructions and alerted us when we hit the target temperature.
WIRED With a second probe ($20), you can monitor two cuts simultaneously on the same device. Alerts for temperature and time.
TIRED A standard thermometer can be had for about $85 less.