If you've seen the Fitbit commercials on tv, those are great too. I got one for Christmas and haven't taken it off but tracks steps and calories burned, your sleep pattern, and you can also track food you've eaten throughout the day and can also scan the barcode for nutritional info and put in your serving sizes. It also tracks your fluid intake throughout the day. It's quite handy. It connects through Bluetooth on a smartphone or tablet. I think on a pc too. ????