One job, done well.
No sprawling platforms. Each app starts with a real problem and stays focused on solving it.
Independent software studio
Simple apps for simple jobs.
Focused tools for everyday life. Calm to use. Private by design.
Explore our apps
How we work
Technology should do its job, respect your attention, and then get out of the way.
Private by design.
No ads. No data selling. No surveillance. Personal data stays personal whenever the product allows it.
Calm by default.
Clear language, gentle reminders, and useful information without noise, feeds, or pressure.
Featured apps
Simple apps for simple jobs.
Storm anxiety alerts for dogs
Help your dog before the first rumble.
Dog Thunder gives you an early, local heads-up when storms are likely—time to prepare medication, gear, or a quiet place.
Visit Dog Thunder
Personal weather risk forecasts
Know when the weather can trigger your migraine.
Migraine Weather watches pressure, temperature, and humidity so weather-sensitive people can plan before risky conditions arrive.
Visit Migraine Weather
More from Substruct
Useful, on purpose.
Health
Migraine Logger
A quick, private migraine log built for kids, teens, parents, and anyone who wants less friction.
Relationships
LYD — Love You, Daily
Gentle daily check-ins that help couples notice and build small acts of connection.
Health & Fitness
Simple Push-up Tracker
Build a daily push-up habit with fast logging, visible chains, earned rest days, and no social pressure.
Horology
Classic Repeater
Hear the time through authentic mechanical chimes on Apple Watch and iPhone.
About Substruct
A small studio, serious about useful software.
Substruct is an independent Maryland software studio building apps for iPhone and Apple Watch. We make the kinds of tools we want to use ourselves: specific, thoughtful, and respectful of the people who rely on them.
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