The short answer
Dorso gives technical users more control.
Both tools are Mac-focused and process posture locally. Plumb provides a polished personal coaching flow. Dorso is open source and can monitor through either the camera or compatible AirPods.
Use three personal poses, patient reminder timing, and private progress without adding another wearable or account.
A more technical product path with less documented habit analytics.
Your free trial starts with the first monitoring session, not the download.
At a glance
The decision takes 30 seconds.
Feature lists hide the routine behind the product. This table shows what each choice asks you to install, wear, permit, notice, and pay for.
| What changes for you | Plumb | Dorso |
|---|---|---|
| How it notices posture | On-device Mac camera model, calibrated to three personal positions | Mac camera or AirPods motion sensors |
| How it responds | A quiet reminder after posture drift persists | A progressive screen blur or configurable on-screen overlay that clears after correction |
| Personal setup | Learns upright, natural slump, and looking-down positions | User-configured posture tracking with camera or motion-sensor input |
| What progress looks like | Local posture time, recoveries, and longer-term trends | Daily posture score, weekly and monthly trends, monitoring time, and slouch statistics |
| Where it works | macOS | macOS |
| What you need | A Mac and a useful camera angle | Webcam or compatible AirPods; no dedicated wearable |
| Before you pay | Complete 3-day trial with no card or account | Source release can be built or downloaded; App Store availability is linked from the project |
| Price checked 23 July 2026 | $3.99 monthly, $34.99 annually, or $45 founding lifetime | Open-source release; storefront pricing can vary |
The daily routine
Choose a finished routine or a configurable tool.
Plumb is designed to work out of the box with personal calibration and recovery trends. Dorso gives technical users source access, camera or AirPods input, and a progressive blur.
For Dorso, the practical requirement is: Webcam or compatible AirPods; no dedicated wearable. It supports macOS. Those details matter because a posture product only helps on the days when its setup still feels easy.
Show it upright, your natural slump, and the position you use when looking down.
Plumb watches the session locally and smooths ordinary movement instead of reacting to every change.
A quiet cue appears after sustained drift and clears when you return to your personal baseline.
The first week
What using each product feels like in practice.
Plumb begins by asking for three examples from your real desk setup: upright, your natural slump, and the position you use when looking down. That gives the app a personal reference before it starts coaching. You then begin a monitoring session and continue working while classification stays on the Mac.
When your posture moves briefly, Plumb waits. When the drift continues, a quiet reminder appears. Recover into your calibrated range and the cue clears. The useful unit is the completed recovery, not the number of notifications the app managed to show.
Dorso begins from a different product decision: user-configured posture tracking with camera or motion-sensor input. During use, it relies on mac camera or AirPods motion sensors. Its feedback is a progressive screen blur or configurable on-screen overlay that clears after correction. That can be the better experience when open source, hackable, and supports AirPods tracking is the feature most likely to change your behaviour.
By the end of the week, the difference becomes clearer. Plumb records local posture time, recoveries, and longer-term patterns. Dorso offers daily posture score, weekly and monthly trends, monitoring time, and slouch statistics. Decide which view of progress will help you adjust the habit, and which will become another dashboard you stop opening.
Monitor, recover, continue
The product tries to earn a small place in the workday and disappear once you are back in range.
Open source, hackable, and supports AirPods tracking
The advantage is meaningful when it outweighs this daily cost: a more technical product path with less documented habit analytics.
The coaching experience
Quiet prompting and screen blur train different habits.
Plumb is patient by design. It waits to see whether a posture change lasts, then shows one quiet cue. That delay helps reaching, reading, thinking, and ordinary movement remain part of the work rather than becoming false alarms.
Dorso takes a different route with a progressive screen blur or configurable on-screen overlay that clears after correction. Its strongest case is open source, hackable, and supports AirPods tracking. The trade-off is equally concrete: a more technical product path with less documented habit analytics.
After a Plumb reminder, returning to your calibrated range clears the cue. Posture time, recoveries, and longer-term patterns stay available on the Mac, so the product can fade back into the work once it has done its job.

Calibrate once, start monitoring, and let Plumb wait for the moments when a reset is actually useful.
Pick your trade-off
Which routine will you still use next month?
- Want a polished setup and three-pose calibration.
- Prefer a quiet reminder over screen blur.
- Want local recovery and trend reporting.
- Do not want to manage an open-source utility.
- Want source code you can inspect or modify.
- Prefer AirPods motion tracking to a webcam.
- Respond to progressive screen blur.
- Enjoy configuring a Mac utility around your workflow.
Plumb is Mac-only and needs a useful camera angle. Dorso asks you to accept a different constraint: a more technical product path with less documented habit analytics. Choose the constraint that fits the day you already have.
Privacy and setup
The sensing method determines what you must trust.
Plumb uses the Mac camera because posture is contextual. It processes frames on the device, discards them during use, and keeps posture history on the Mac. Camera images and posture history are excluded from diagnostics. No account is required for the three-day trial.
That model still has a clear requirement: you must be comfortable granting camera access and have an angle that can see your working position. If your camera is closed, obstructed, or pointed away while using an external display, Plumb cannot coach the session properly.
Dorso has this setup requirement: Webcam or compatible AirPods; no dedicated wearable. Its documented privacy position is local Mac processing with source code available for inspection. For some buyers, that removes the permission they care about most. For others, it adds hardware, account, sync, or platform requirements that make everyday use less convenient.
There is no universally frictionless posture sensor. Choose the data path and physical setup you can understand and keep using. Then test the reminder itself, because strong privacy terms do not make an irritating coaching loop sustainable.
Try before you commit
Test the coaching loop before you build a routine around it.
You can use Plumb’s complete coaching loop for three days without a card or account. The trial begins when monitoring starts, so downloading it early does not waste any of the trial.
For Dorso, the documented trial is: Source release can be built or downloaded; App Store availability is linked from the project. The price when checked was: Open-source release; storefront pricing can vary. Pricing can move, so confirm the current offer before buying.
No card. No account. No cloud posture history.
Common questions
Still deciding?
Is Plumb better than Dorso?
Plumb is the stronger fit for Mac users who want three-pose personal calibration, reminders after sustained drift, and local recovery trends. Dorso is the stronger fit for people who prioritise open source, hackable, and supports airpods tracking.
What is the biggest difference between Plumb and Dorso?
Plumb uses a quiet reminder after sustained posture drift. Dorso provides a progressive screen blur or configurable on-screen overlay that clears after correction.
What equipment does Dorso require?
Webcam or compatible AirPods; no dedicated wearable
How does Dorso handle privacy?
Local Mac processing with source code available for inspection
How much does Dorso cost?
Open-source release; storefront pricing can vary. Pricing was checked on 23 July 2026; verify the current official offer before purchasing.
