‣ Ever wonder how photographers make those great July 4 pictures of light trails, the fiery streams behind sparklers and fireworks? They use long-exposure photography, the kind perfected by Spectre Camera. The app specializes in long-exposure images, making it perfect to play with this weekend. (It was named 2019’s iPhone App of the Year, to boot.)

‣ Need to stock up on hot dogs? Veggie burgers? Corn on the cob? Drop an order in Instacart and let your weekend’s groceries come to you.

‣ The official Weber Grills app is loaded with more than 400 recipes for everything from steak to mahi mahi. Or tell the app the ingredients you’re grilling and it’ll deliver personalized guidance (along with a timer to make sure everything is done to perfection).

‣ Burgers and hot dogs are fine fare, but if you’re hungry for adventure, try serving the patrons of Potion Punch 2. Craft nourishing beverages and exotic barbecue to keep heroes healthy. Think cooking a medium-rare burger is tricky? Try searing a monster fish using a dragon grill!

‣ Was it Miss Scarlett with a candlestick in the conservatory? Colonel Mustard with a lead pipe in the lounge? In the timeless Clue, you’ll deduce the details of a murder while throwing your friends and family off the trail.

‣ If you’ll be outdoors over the long weekend, bring QSun along. The app evaluates your skin type through a helpful in-app quiz, then estimates how much exposure you can handle based on your location and the day’s UV forecast.

‣ It’s a busy weekend at the most famous track in motorsports: The Indianapolis Motor Speedway will host NASCAR’s Brickyard 400 on Sunday and Indycar’s Indy Grand Prix on Saturday. With the NASCAR Mobile and INDYCAR apps, you can ride along through live in-car video and listen in on live comms between drivers and pit crews.