In case you missed it while Wordle-ing, a new iOS app called Locket has skyrocketed to the top spot of the App Store this week, with more than a million signups and counting. Developed by Matt Moss, a ...

Lindsey Ellefson is Lifehacker’s Features Editor. She currently covers study and productivity hacks, as well as household and digital decluttering, and oversees the freelancers on the sex and ...