An app can help beat jet lag

Apps that swiftly ease long-haul journey have proliferated

- CHRISTINE CHUNG

NOTHING UNDERMINES THE joy of travel quite like a bad case of jet lag. That's why an entire industry has popped up to help deal with it, hawking solutions like light therapy glasses, targeted supplements, apps and coaching. But do any of them actually work? I put two popular methods to the test on a two-week journey to Asia in May. I flew from New York City, where I live, to Seoul and Taipei, Taiwan—both on the other side of the globe, a difference that is literally night and day—and then back home.

The two apps to which I ceded control of my daily rhythms, Flykitt and Timeshifter, are personalized programmes based on scientific approaches to jet lag.