Real-time slouch detection for Mac

Built by Leon Wei, former  Apple machine learning engineer

Slouching creeps in while you work. Private, on-device AI spots it and reminds you to straighten up.

macOS 26 or later. Try it free.

Open demo on Vimeo

Private posture monitoring

Camera frames and posture calibration stay on your Mac. Subscription access is checked separately.

On-device AI
Personal calibration
Sitting & standing
Live camera switching
Adjustable reminders
Energy Saver mode

A closer look

See your posture. Catch your slouch.

Personal calibration, live posture feedback, and gentle reminders. Here’s how it all comes together on your Mac.

Spot the slouch as it happens.

Private, on-device detection helps you notice when you drift out of your calibrated posture.

PostureNet monitoring window showing upright posture with a green risk score of zero
Upright posture
PostureNet monitoring window showing a slouch with a red ring and a risk score of 100
Slouch detected

Teach the app your posture.

Build a personal reference for the way you sit or stand.

PostureNet calibration screen with a camera preview and posture capture controls

A nudge back to upright.

Adjust how often reminders appear when slouching is detected.

Mac desktop displaying a PostureNet notification that bad posture was detected

Screenshots from the Mac App Store show the original PostureNet interface. Current appearance may differ.

Mac App Store reviews

What Mac users say about Posture Reminder AI

Selected reviews from the Mac App Store, linked to their source. These describe individual experiences with the app.

Setup

Set up your posture baseline in two quick captures

Choose a camera that can see your face and shoulders, then show the app your natural upright posture and your usual slouch. Sitting and standing each use their own calibration. A new camera may need recalibration before monitoring resumes.

Step 1

Reference posture

Sit the way you want to work: relaxed, upright, and natural. Keep the camera angle you will use during the day.

Step 2

Typical slouch

Show the position you usually drift into, so reminders fire for the pattern you actually want to change.

Frequently asked questions

Answers about setup, privacy, and pricing.
More questions? Email us

How long is the free trial?

The free trial lasts one hour from your first app launch. To continue posture monitoring afterward, choose a monthly or annual subscription in the Mac App Store.

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How much does the app cost?

US pricing is $9.99/month or $99.99/year. The annual plan saves roughly two months compared with paying monthly and includes Family Sharing. The monthly plan does not include Family Sharing.

Apple handles payments and subscriptions. Prices vary by region; see plan details and your local Mac App Store.

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Are my camera images and posture data private?

Yes. Posture analysis runs on your Mac. Camera images are never recorded or uploaded, and your posture calibration stays on your device.

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What do I need to get started?

A Mac running macOS Tahoe (26.0) or later and a built-in camera, compatible webcam, or supported iPhone camera.

Allow camera access and notifications, and keep your face and shoulders in view during calibration and monitoring.

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How does posture monitoring work?

During setup, capture your upright and slouched positions. The app uses those examples to detect slouching and send posture reminders while you work.

All posture analysis runs on your Mac.

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How do I reopen the app window?

Click the app's Dock icon. While Energy Saver is active, you can also choose Show Window from the menu bar. Posture monitoring continues in the background.

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Can I monitor my posture while standing?

Yes. Select Standing in the main window and calibrate your upright and slouched positions.

Sitting and Standing have separate calibrations. You can switch modes without restarting the app.

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Do I need to restart after changing settings?

No. Camera selection, posture alerts, reminder frequency, and Launch at Login changes apply without restarting.

Permissions refresh when you return from macOS System Settings. If a new camera needs calibration, the app pauses monitoring until you calibrate it.

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Which Macs are supported?

Both Intel and Apple Silicon Macs are supported when running macOS Tahoe (26.0) or later.

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Why are reminders missing while Focus is on?

Focus can silence posture reminders. Open System Settings > Focus, select your active Focus, and add Posture Reminder AI under Allowed Apps with Allow Some Apps selected.

Also check that notifications are allowed for the app in System Settings > Notifications.

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How do I launch the app when I log in?

Open the app's Settings and enable Launch at Login. Posture Reminder AI will open automatically when you sign in to your Mac.

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What should I do if the camera view is blank?

Allow Posture Reminder AI in System Settings > Privacy & Security > Camera, then return to the app.

Reconnect a disconnected camera, or close another app that is using it. You can also choose another camera in Settings > General > Camera and recalibrate if needed. If the app will not open, contact support.

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Can I use my iPhone as the camera?

Yes. A compatible iPhone can act as your Mac camera through Continuity Camera.

Mount it securely, then select it in Settings > General > Camera. See Apple's setup guide for compatibility and connection requirements.

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How do I change reminder frequency?

Open Settings > Notifications, enable Posture alerts, and choose Remind every.

This sets the minimum time between alerts when slouching is detected. It is not a timer that reminds you regardless of your posture.

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Can I use an external monitor or webcam?

Yes. Use a camera that can see your face and shoulders, even if your monitor has no built-in camera.

Choose it in Settings > General > Camera. If it has no saved calibration for your current Sitting or Standing mode, calibrate before monitoring.

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Why does the app need a camera?

The camera lets the app compare your current posture with your calibration. Keep your face and shoulders in view while monitoring so it can detect slouching.

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When should I recalibrate?

Recalibrate when you change your camera angle or desk setup, or if reminders no longer match your posture.

Sitting and Standing each need their own calibration. If you switch to a camera without a saved calibration for that mode, recalibrate before monitoring.

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Is the app available on Windows or mobile?

Posture Reminder AI is available only on Mac. There is currently no Windows, iPhone, or Android app.

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