There are several methods of picking the perfect watermelon, but luckily nowadays there's an app for that :) You just need to place your smartphone on the watermelon, select its approximate size and color, and tap it three times. Then the app will analyze the feedback sound it receives from the watermelon and will determine if it is ripe or if you should skip it. Just search for iWatermelon on the app store or check out this link: https://apps.apple.com/il/app/iwatermelon-deluxe/id367961174 iWatermelon @AppStore https://apps.apple.com/il/app/iwatermelon-deluxe/id367961174