Free trial
The free trial runs for one hour from the first app launch. Continuing posture monitoring afterward requires a monthly or annual subscription bought through the Mac App Store.
Learn morePosture Reminder App
On-device slouch detection for Mac, built by a former Apple ML engineer
Beginner
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What is Posture Reminder App?
Posture Reminder App is a body analyzer tool. A Mac-only posture monitor that uses on-device AI to detect slouching from your webcam and send reminders. Calibration is personal and sitting and standing modes are handled separately. Requires macOS 26 or later and a camera with your face and shoulders in view.
Posture Reminder AI is a Mac utility that watches for slouching through your webcam and nudges you back to an upright position while you work. The detection model runs entirely on the machine, so camera frames are never recorded or uploaded. Calibration data is stored locally as well. The app was built by Leon Wei, a former Apple machine learning engineer, and is distributed through the Mac App Store. Setup is built around two short captures rather than a generic posture template. You first record the way you want to sit (relaxed and upright), then show the position you usually drift into. The app compares live frames against that personal reference and surfaces a risk score: green when you hold your baseline, red with a slouch warning when you drift. Sitting and standing each keep their own calibration, and you can switch between the two modes without restarting. Changing cameras, alert frequency or Launch at Login also applies immediately, though a newly selected camera needs its own calibration before monitoring resumes. The audience is desk workers, remote employees and anyone told by a physiotherapist to stop collapsing forward. Because reminders are triggered by detected slouching rather than a fixed timer, the app stays quiet when your posture is fine. Reminder frequency sets a minimum gap between alerts, which keeps it from nagging. An Energy Saver mode lets monitoring continue in the background with the window closed, and the Dock icon or menu bar brings it back. The tradeoffs are narrow. There is no Windows, iPhone or Android version, and nothing works below macOS Tahoe (26.0). A Mac camera or a Continuity Camera iPhone must have your face and shoulders in frame, so monitor-mounted webcams are the practical setup. The free trial lasts one hour from first launch, which is enough to test the idea but not to judge long-term habit change. Against wearables and generic break timers, this is the more direct option for people who already sit at a Mac all day, and the least useful for anyone who splits time across devices.
How do you use Posture Reminder App?
1Install from the Mac App Store
Check that your Mac runs macOS Tahoe (26.0) or later, then download the app from the App Store listing. Intel and Apple Silicon Macs are both supported.
2Grant camera and notification access
Allow camera access in System Settings under Privacy and Security, and permit notifications. Without both, the app cannot see your posture or deliver reminders.
3Choose your camera
Pick a built-in camera, a webcam with your face and shoulders in view, or an iPhone via Continuity Camera under Settings, General, Camera.
4Calibrate upright and slouched positions
Capture your natural upright sitting position, then your typical slouch, using the same camera angle you will keep during the day. Repeat the process in Standing mode if you want both.5Set reminder frequency and launch behaviour
In Settings, Notifications, enable Posture alerts and choose how often reminders may repeat while slouching is detected. Turn on Launch at Login so monitoring starts with your Mac.
6Keep alerts from being silenced
If reminders stop, check Focus in System Settings and add the app under Allowed Apps, then confirm notifications are enabled for it.
Pros and cons
Pros
- Posture analysis runs on the Mac, so camera images are not uploaded or recordedAI
- Two-step personal calibration (upright reference plus your own slouch) beats generic posture rulesAI
- Separate Sitting and Standing calibrations, switchable without an app restartAI
- Reminders fire on detected slouching rather than on a fixed timer, so quiet periods stay quietAI
- Energy Saver mode keeps monitoring alive in the background with the window closedAI
Cons
- Mac only: no Windows, iPhone or Android version existsAI
- Requires macOS Tahoe (26.0) or later, which excludes older MacsAI
- The one hour free trial is too short to judge whether the habit actually sticksAI
- Any camera or desk angle change forces recalibration before monitoring resumes, and downloads or Focus mode can silence alertsAI
How much does Posture Reminder App cost?
Pricing
US pricing is $9.99 per month or $99.99 per year. The annual plan saves roughly two months of the monthly rate and includes Family Sharing, which the monthly plan does not. Apple processes payments and subscriptions, and prices vary by region.
Learn moreSupport
Support is by email, and the site carries an extensive FAQ covering setup, privacy, pricing, system requirements, Focus mode conflicts and camera troubleshooting.
Learn moreIntegrations
Works with built-in Mac cameras, external webcams and a compatible iPhone used as a camera through Continuity Camera. Payments and subscriptions are handled by Apple through the Mac App Store.
Features
Posture detection runs on-device using a personal, two-capture calibration (upright reference plus your own slouch). A live risk score shows upright versus slouched states, reminders fire when slouching is detected, and reminder frequency is adjustable. Sitting and Standing modes hold separate calibrations. Camera selection, Launch at Login and Energy Saver background monitoring are included.
Learn moreFrequently asked questions about Posture Reminder App
How much does Posture Reminder App cost?
US pricing is $9.99 per month or $99.99 per year. The annual plan saves roughly two months of the monthly rate and includes Family Sharing, which the monthly plan does not. Apple processes payments and subscriptions, and prices vary by region.Does Posture Reminder App offer a free trial?
The free trial runs for one hour from the first app launch. Continuing posture monitoring afterward requires a monthly or annual subscription bought through the Mac App Store.How do you use Posture Reminder App?
The walkthrough on this page covers 6 steps: 1. Install from the Mac App Store 2. Grant camera and notification access 3. Choose your camera 4. Calibrate upright and slouched positions 5. Set reminder frequency and launch behaviour 6. Keep alerts from being silenced.What platforms does Posture Reminder App support?
Posture Reminder App is available on MacOS.What does Posture Reminder App integrate with?
Works with built-in Mac cameras, external webcams and a compatible iPhone used as a camera through Continuity Camera. Payments and subscriptions are handled by Apple through the Mac App Store.What are the limitations of Posture Reminder App?
Mac only: no Windows, iPhone or Android version exists. Requires macOS Tahoe (26.0) or later, which excludes older Macs. The one hour free trial is too short to judge whether the habit actually sticks.
Status
StatusActive
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Added10/22/2026
Platforms
MacOS
Pricing
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