Shift

Sit/stand, done honestly. Shift is a posture-cadence app for iPhone, Apple Watch, and Mac — currently in private testing.

Every sit/stand reminder app fails the same way: it fires a timer, you dismiss it, dismissal becomes reflex, and the app dies in three weeks. Shift has one rule that everything else follows from:

Dismissal is never completion. A prompt resolves only when a sensor confirms your posture actually changed — or when you explicitly declare a skip, which gets logged as a skip.

There’s a second, quieter idea: standing too long is a failure state too. Prolonged static standing is the classic risk factor for varicose veins, so the unit of success isn’t standing minutes — it’s transitions. A ninety-minute standing block shows up in the same warning color as a ninety-minute sitting one, and Shift will nudge you back down out of a too-long stand.

How it works

• Watch (ideal). Wrist haptics you can’t ignore, and the sensors that verify you actually stood — no button required. It’s the strongest surface, and it matters most if your work machine isn’t a Mac.
• iPhone (solid backup). The required device: history, trends, and honest insights — including the longest-static-block chart that treats sitting and standing alike.
• Mac (optional). Ambient state in the menu bar, and a last-resort screen dim that behaves like a firm colleague, never a punishment. Your keyboard always still works.

The shape of it

$20, once, all three platforms — no subscription, ever. Everything stays on your device or in your own iCloud. No analytics, no accounts, no leaderboards.

Get notified

It’s in private testing now. Leave your email and I’ll let you know when it’s ready — and whether you’d like to help test it on your own wrist first.

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A Tidy app.