Cedar Point opens in a week (05/05/18) and they've made improvements to their app, and one detail alone makes this app invaluable. The Roller Coaster capital's official app has maps of the park, it'll show you the route to take from one ride to another, check wait times, and take advantage of online coupons and specials. But the best feature: is the car locator! Plot your location on the app when you get out of your car, and at the end of the day, it'll lead you right back.
There's also plenty of information about the park and its amenities. You can even store your season pass on the app, so you always have it with you.