Why have consumers spent $1 million on Vessyl, an absurd calorie-counting cup?

Note: When you purchase something after clicking links in our articles, we may earn a small commission. Read our affiliate link policy for more details.

  • Smart Home
  • Health and Fitness Software
  • Gadgets
  • Kitchen
Jon is the Editor-in-Chief of PCWorld and TechHive. He's been covering all manner of consumer hardware since 1995.