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Nutrition apps can help build healthy habits. For some users, their gaming features carry risks

Green means go, red means stop. Trophies or confetti come with good performance, and people who fall behind get nudged to do better. Those brightly colored engagement tactics long ago jumped from smartphone games to everything from online shopping to sports betting and classrooms. So it should come as no surprise that many nutrition-tracking apps like MyFitnessPal and Noom also use gaming features to keep users coming back.

How to talk about money with your kids

At the grocery store, Jamie Corum sets a two-minute timer for her 10-year-old daughter to look around. Then she resets it to 10 minutes so her daughter can choose one thing to buy, making sure she considers her budget and how much tax she’ll have to pay.

Play is underway in ideal conditions on the opening day of Wimbledon

Among the early matches on the opening day of the grass-court Grand Slam: Fourth-seeded Jessica Pegula beat Darja Vidmanova 7-5, 6-3; rising Spanish teenager Rafael Jodar, in his Wimbledon debut, beat Felix Gill 6-3, 6-3, 7-5; and French Open finalist Maja Chwalinska, who needed a wild-card entry, was beaten 2-6, 7-5, 6-2 by Mananchaya Sawangkaew.