Just Joking from National Geographic Society is a free app download that gives a sample of 25 kid-safe jokes. Additional “laugh packs” of 100 jokes can be purchased for $0.99. Expect to see random jokes while learning about subjects such as animals, science, space, or weather. You can even shake the phone to get a random joke.
From the app: “With knock-knock jokes, tongue twisters, riddles, cross-the-road jokes, and more, Just Joking is perfect for any road trip or rainy afternoon. Laughing animals, goofy people, and other colorful illustrations are paired with fun sound effects and interactives and presented in our signature eye-popping color palette and dynamic photo-driven style. Parents can rest easy knowing that each joke is age-appropriate and handpicked by a brand they know and trust: National Geographic Kids.”