Does Dorso work without a webcam?

Yes. With AirPods Pro, Max, or 3rd generation or later on macOS 14.0+, Dorso reads head position from the earbuds’ motion sensors instead of the camera, including with the laptop lid closed. SitSense has no camera-free mode — it needs a webcam to run at all.

No free tier is stated on its site or App Store listing as of writing — it is a one-time $4.99 purchase with no subscription. SitSense’s everyday tier is free indefinitely with no card required; Pro is $2.92-4.99 a month for full session history.

Does Dorso upload my data anywhere?

No. Dorso states it processes everything locally with no account and no cloud services, and its App Store privacy listing states the developer collects no data. SitSense also processes video locally in the browser and only sends numeric metrics to its server, never a frame of video.

Can I use Dorso on Windows or in a browser?

No — Dorso is a native macOS app (13.0 or later) with no Windows, Linux, or browser version. SitSense runs in any modern browser on any operating system.

Does Dorso track more than head position?

Not according to its own materials — it detects slouching and forward-head, or "turtle neck," posture from head angle, via webcam or AirPods. SitSense’s web app adds shoulder slope, trunk angle, and neck rotation to that reading; the free Chrome extension adds the same shoulder slope and neck rotation, but not trunk angle, since a webcam sees your whole upper body rather than just where your head is pointed.

Dorso vs SitSense: Mac Menu-Bar App vs Browser-Based Posture AI

Side by Side

	SitSense	Dorso
Where it runs	Browser tab, nothing installed	Native Mac menu-bar app
Platforms	Any OS with a modern browser	macOS 13.0+ only (AirPods mode needs 14.0+)
Detection method	Webcam, MediaPipe pose estimation	Webcam, or AirPods motion sensors with no camera at all
Forward head / tech neck	Yes, in both the web app and free extension	Yes, detected explicitly
Shoulders and trunk	Shoulders: yes, in both. Trunk angle: web app only	Not described in its own materials
Price	Free, unlimited sessions; Pro $2.92-4.99/mo	$4.99 one-time purchase, no subscription found
Account required	No, for the free extension; a free account for the web app	No — no account, no cloud
Video/motion data	Never leaves the device	Never leaves the device
What it shows you	A companion reviving a reef as you sit well	A daily posture score with weekly/monthly trend charts
Open source	No	Yes, MIT license on GitHub

The AirPods Mode Is the Interesting Part

Dorso can run without a camera. With AirPods Pro, Max, or 3rd generation or later on macOS 14.0+, it reads head position straight from the earbuds’ motion sensors — including with the laptop lid closed. That is something SitSense cannot do at all: it is webcam-only, so no webcam means no reading.

It is a genuinely useful mode for anyone who runs a closed-lid setup with an external monitor, or who would rather not have a camera pointed at them regardless of what happens to the footage. The tradeoff is what it can see: head-motion sensors can tell you where your head is pointed, not what your shoulders or spine are doing, so it is a narrower read of posture than a webcam gets from your whole upper body.

Both Keep Everything On the Device

Dorso states that it "processes everything locally on your Mac. No account required, no cloud services, no data collection," and its App Store privacy declaration states the developer collects no data from the app at all. SitSense runs pose estimation in the browser tab through MediaPipe and sends nothing but numbers to a server; no video frame ever leaves the device either way.

Between these two specifically, privacy is not the deciding factor — both mean it. The differences that actually matter are what each one can see, and what you pay.

A Purchase vs a Subscription

Dorso is a $4.99 one-time purchase on the Mac App Store. No subscription, and no free tier we could find on its site or store listing — you pay once and own it.

SitSense’s everyday tier is free indefinitely, no card required: the companion, the reef, and unlimited sessions. Pro adds full session history for $2.92/month billed annually ($34.99/yr) or $4.99/month billed monthly. If you already know you want a Mac-only posture tool and would rather pay once and stop thinking about it, Dorso’s model has a real edge. If you are not sure yet, SitSense costs nothing to find out.

A Score vs a Reef

Dorso’s dashboard reports a daily posture score alongside weekly and monthly trend charts — a fairly conventional quantified-self view of your posture over time.

SitSense used to work the same way and deliberately took the score away in August 2026. Sitting well now feeds a companion you hatch, who spends that on reviving a bleached coral reef one object at a time — there is no score, streak, or leaderboard left in the product. Which of these you would rather look at is genuinely a matter of taste, not a right answer. If you want a number and a line going up, Dorso’s dashboard is the more literal tool of the two.

Questions people ask

Does Dorso work without a webcam?: Yes. With AirPods Pro, Max, or 3rd generation or later on macOS 14.0+, Dorso reads head position from the earbuds’ motion sensors instead of the camera, including with the laptop lid closed. SitSense has no camera-free mode — it needs a webcam to run at all.
Is Dorso free?: No free tier is stated on its site or App Store listing as of writing — it is a one-time $4.99 purchase with no subscription. SitSense’s everyday tier is free indefinitely with no card required; Pro is $2.92-4.99 a month for full session history.
Does Dorso upload my data anywhere?: No. Dorso states it processes everything locally with no account and no cloud services, and its App Store privacy listing states the developer collects no data. SitSense also processes video locally in the browser and only sends numeric metrics to its server, never a frame of video.
Can I use Dorso on Windows or in a browser?: No — Dorso is a native macOS app (13.0 or later) with no Windows, Linux, or browser version. SitSense runs in any modern browser on any operating system.
Does Dorso track more than head position?: Not according to its own materials — it detects slouching and forward-head, or "turtle neck," posture from head angle, via webcam or AirPods. SitSense’s web app adds shoulder slope, trunk angle, and neck rotation to that reading; the free Chrome extension adds the same shoulder slope and neck rotation, but not trunk angle, since a webcam sees your whole upper body rather than just where your head is pointed.

The one without hardware

No shipping, no charger, nothing stuck to your back.

Every wearable above measures one axis of lean. A webcam already pointed at you measures seven angles.

Fix My Posture

Free to start. Nothing to buy or send back.