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Field notes

Notes from the build

Short pieces on the craft: why the product works the way it does, what the behaviour research actually says, and what we’re learning from real practices. No listicles.

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The pieces worth your ten minutes

Deep pages that double as essays - each one stands alone.

Behaviour

Why 21 days is a myth - and 66 is a median

The Lally research behind our milestone ladder, and why celebrating day 3 matters more than promising day 21. Read on the science page →

Craft

One thing they said, one thing to do

The anatomy of a nudge that lands versus a notification that trains people to swipe. Read on the nudges page →

Engineering

Why the watch app has no login

Security decisions read as product decisions on a 40mm screen. Read on the watch page →

AI

The AI that drafts and never sends

Where we drew the line on automation in a relationship business. Read on the AI page →

Growth

From TikTok click to paying client

What creator-coaches taught us about attribution. Read on the creators page →

Product

Fifteen honest minutes

We timed onboarding with a stopwatch and published the path. Read the guide →

The longer essays are coming

The newsletter starts when we have something worth your inbox. Meanwhile, the trial is the best read we have.

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