On the water
HullSpeed
A sailing speedometer for iPhone and Apple Watch. Check your speed at a glance and keep a record of your time on the water.
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Independent app developer
Hi, I’m Jackson.
I make apps for the things I enjoy: weather, the outdoors, sailing, and the occasional game.
My work lives on the App Store published as Catspaw Systems. This is a collection of what I’m building.
I’ve also spent much of my career in renewable energy. See my consulting work and LinkedIn profile.
My apps
Weather
Weathercaster
See the whole forecast at a glance. Clear charts bring temperature, wind, clouds, rain, and snow together on one timeline.
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Weather
Farsight
Weather for your plans. Pick a place and time, then follow how the forecast changes as your trip or event gets closer.
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Weather
Barograph
Watch the pressure change. Turn the barometer in your iPhone or iPad into a live chart and a useful atmospheric data log.
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Astronomy
Mooncaster
Find a moonrise worth heading outside for. Lunar geometry and local weather come together to help you choose when and where to look.
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Widgets
ImageTracker
Keep a window on the world. Add webcams, satellite imagery, and live charts to your Home Screen using an image URL.
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Snow & skiing
PowDr
Find your next ski day. Compare recent snowfall and short-term forecasts at resorts across the US and Canada.
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Everyday activity
StepTracker
A simple check-in on your day. Track steps, stairs, distance, and your daily goal with a clear view of your activity over time.
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Developer tools
AppCat
Your app business, in one view. A compact App Store Connect dashboard for downloads, proceeds, trends, and update adoption.
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Developer tools
Rankor
Keep up with your apps around the world. Track App Store chart positions and ratings across regions, with history you can actually use.
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Puzzles
Artizen
A quiet moment with great art. Reassemble paintings from across art history, one square piece at a time.
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Puzzles
Purrfecto
A little museum of fine cats. Turn cat paintings from around the world into tactile, relaxing puzzles.
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Daily quiz
The Trivia Daily
Yesterday’s headlines. Today’s challenge. Test your news knowledge with a daily quiz in a newspaper-inspired setting.
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Storytelling
Holodeck
Make up a story together. Trade turns with a friend, guiding an illustrated adventure powered by Apple Intelligence.
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