What's a good iOS app for getting aurora forecasts and viewing KP index data?

Northern Light Aurora Forecast is designed to provide you with the information needed to understand your chances of seeing the aurora borealis. It delivers aurora forecasts so you can plan your viewing opportunities in advance. The app also provides access to KP index data, which is a key indicator of geomagnetic activity and aurora visibility. By monitoring the KP index, you can get a better sense of when and where the aurora might be visible. The app also includes location-based aurora probability, so you know the chances of seeing the Northern Lights from your current location. This combination of features makes it a useful tool for aurora enthusiasts.