The Karl
Fog Tracker & Sun Finder
Price history
About
This app provides real-time fog and sun forecasts using satellite data and local sensors. It offers a transparent view of data sources and uses machine learning to personalize predictions for your microclimate. Find sunny spots and get detailed burn-off times.
What's New in The Karl
2.0.7
July 30, 2026
Developer apps
FAQ
What is The Karl?
The Karl is a weather tool that provides honest forecasts about fog and sun using real satellite data and local sensors, rather than guesses or simulated graphics.
Does The Karl have ads?
No, The Karl is ad-free. It is a premium weather tool designed to provide a clear and uninterrupted user experience.
What data sources does The Karl use?
The Karl uses live NASA GOES-West satellite imagery, NOAA Bay visibility sensors, airport METAR reports, and real forecast models. A dedicated screen shows exactly what each sensor is reporting.
How does The Karl personalize forecasts?
Every forecast is graded against fresh data, and your quick 'look outside' reports train a private, on-device correction tuned to your specific 25 km microclimate. The longer you use it, the better it gets.
Can I find sunny spots with The Karl?
Yes, you can search for real parks, beaches, viewpoints, and trails within 25 miles, ranked live by actual sun conditions. You can then jump directly into Apple Maps for directions.
What devices does The Karl support?
The Karl is available on Apple Watch, iPhone, and iPad, offering features like Lock Screen Live Activities and offline Home Screen widgets.
How often is The Karl updated?
The app was last updated on July 30, 2026, to version 2.0.7. This indicates a commitment to ongoing development and feature improvements.
What is the age rating for The Karl?
The Karl has an age rating of 4+, making it suitable for a wide range of users interested in weather information.
