Please teach me how to pick a really good watermelon.
You can use iWatermelon Deluxe app Watermelon prober and scanner (place your device on the fruit and tap it 3 times to detect if the watermelon is ripe and sweet):
AppStore: https://itunes.apple.com/il/app/iwatermelon-deluxe/id367961174?mt=8 Reading More May Cause Envy…