Fitbit Zip, $40 in either Charcoal or Magenta

Fitness trackers can help you ward off weight gain, but if you don’t want to commit to wearing a bracelet every day, the clip-on Fitbit Zip is a great alternative.

The Fitbit Zip is about as basic as smartphone-era fitness trackers come. It will track your steps, distance, and calories burned, and sync the data to your phone. That’s basically it. But if that limited feature set is all you need out of a fitness tracker, it’s tough to beat a dollar away from its lowest price.