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Copper Sun

For the relationships that matter most

Copper Sun Relationship Field Guides are private, on-device guides for the people you care about most — no accounts, no feeds, no data leaving your phone.

Read the field notes
In development

One guide. One relationship.

Husband Field Guide app icon — the c4 Hsb element symbol in white on crimson
Guide #1 · Coming soon

Husband Field Guide

A private, on-device field guide for being a better husband. It notices what you tell it, helps you prepare for the moments that matter, and keeps every word on your phone.

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A man in his 50s leaning against a warm sand-coloured wall, looking away in a calm, reflective moment.
The idea

A field guide, not a fix

A field guide doesn't diagnose you or fix you. It helps you notice, prepare, and show up — practical notes for the moments that matter, kept private on your device.

You bring the relationship; the guide pays attention. No accounts, no feeds, nothing leaving your phone. The work happens behind the curtain.