Performance is a critical factor in user engagement, where even minor delays in loading can deter users. A clean and simple user interface also contributes significantly to user retention.
Cal AI is the AI calorie counting app startup built by two high school teenagers that soared to over 15 million downloads and over $30 million in annual revenue in under two years, MyFitnessPal tells TechCrunch.
January might be coming to a close, but the focus on wellness doesn't have to die with it. If anything, it's a good time to check in with those 2026 goals and see what you want to prioritise for the rest of the year. To that end, we've gathered some of the best deals we've seen in the past few weeks that will help you tick off every good intention you set this month.
Recipe apps live on screens while the physical tools that actually make food better are scattered across drawers and cupboards. Your phone is propped against a mug, your scale is buried somewhere, and you are guessing at temperatures because the thermometer is never where you left it. Most digital cooking tools ignore the reality that kitchens are crowded, messy spaces where the tools you need for precision are rarely connected to the guidance telling you what to do.
vyv (pronounced v-eye-v), a new personalized vitamin and supplement brand designed for women ages 20 to 30 who want wellness to feel intuitive, flexible, and easy to keep up with. Think less pressure, fewer bottles, and way more "this actually works for my life." vyv is the younger sister brand to Persona™ Nutrition, designed with a fresh lens for Gen Z/Millennial females juggling packed schedules, shifting hormones, and big goals-without asking them to become supplement experts along the way.
Rachel Swanson, a registered dietitian at LifeSpan Medicine and author of "Trying!: A Science-Backed Plan to Optimize Your Fertility," splits her time between New York City and Miami, spending about half the year in each. She also takes small-group workout classes three times a week, focusing on strength training. She says eating enough nutrients, especially protein for muscle-building, is crucial for her. She generally aims for around 0.7 grams of protein per pound of body weight, the protein intake usually recommended for physically active people.
We are in the midst of a high protein craze. Every week I get dozens of protein-packed pitches to my inbox, and I'm sure you've seen the protein bars plastered all over subway cars, protein-ified menu items at fast-casual chains like Starbucks and Sweetgreen, and protein versions of classic products (protein pasta, protein crackers, protein...yogurt?) lining practically every aisle at the grocery store.