Grumpy Cats Funny Weather is a free iPhone weather app developed by Weather Creative Inc. The app offers hourly and 7-day weather forecasts, animated radar, and weather forecasts from around the world. But what sets this app apart is its unique twist - the forecasts are delivered with a grumpy cat's touch.

The app's main features include sharing Grumpy's forecast with friends on Facebook, Instagram, and Twitter, providing today's high and low, feels like, humidity, wind, sunrise/set, and more. The GPS feature can auto-locate your city, making it easier to check the weather in your area.

Overall, Grumpy Cats Funny Weather is a fun and engaging app that offers accurate weather forecasts with a unique and humorous twist.