Calibration
Train the Droid in seconds
Show it your good posture, then your slouch. The Droid learns what good looks like for you.
3,957+ downloads · and counting
Sit straight,
feel better.
SitApp's friendly Droid uses your webcam and on-device AI to quietly watch your posture and give you a gentle nudge the moment you start slouching. No wearables. No nagging. Just better days at your desk.
Loved by users worldwide
Mac · Windows · Linux
100%
On-device · private
Free
Forever plan · no card
Slouch spotted! Relax those shoulders
Posture 94% - great
G
"Far better than some of the other posture improvement apps I have tried."
GabeHow it worksThree minutes to set up.
Three minutes to set up.
A lifetime of straighter shoulders.
01
Train the Droid
Sit how you'd like to sit, then slouch how you actually sit. About ten seconds. The Droid won't judge - promise.
02
Get back to work
The Droid lives quietly in the corner of your screen, watching your posture through your webcam. Privacy-first - images never leave your machine.
03
Get a gentle nudge
Start slouching? The Droid pokes its head into the corner of your screen. Pick your nudge - silent visuals, a gentle voice line, or as subtle or as loud as you like.
Before & afterWhat two weeks with
What two weeks with
the Droid actually does.
Drag the slider. This is what eight hours a day at a desk looks like with - and without - a friendly robot watching your back.
Before
After
Drag the slider · or just watch
In your dock
Tiny app. Huge impact on your back.
SitApp lives quietly in your menu bar with on-device AI doing the heavy lifting. Open it for a friendly hub - streaks, weekly trends, and the controls that matter.
Daily streaks
Build a posture habit the same way you build a meditation one. The Droid celebrates the wins.
Know how you slouch
Forward head, leaning left, hunched shoulders - the Droid names your most common slumps and shows which ones you're beating week by week.
Gentle, smart nudges
Long before a full slouch, the Droid spots you creeping toward the screen and gives a quiet nudge - tuned to your quiet hours and sensitivity, so it fits your day.
Your privacyWhat the Droid sees
What the Droid sees
stays between you two.
Your webcam never leaves your laptop. We don't see you, we don't store you, we couldn't share you if we tried.
Stays on your laptop
The Droid does all its thinking right there on your computer. Your face never goes online - not to us, not to anyone.
Works offline
On a plane? In a cabin? No wifi at the cafe? The Droid still has your back. No internet required.
Nothing saved, ever
The Droid takes a quick peek, checks your posture, and forgets. No photos, no recordings, no record of you slouching at 3pm.
Posture metrics (yours)
Streaks & trends
Camera footage
Photos of you
Numbers, never video
SitApp keeps the numbers you want to see - posture time, streaks, weekly trends - so you can watch yourself improve. Never any video, photos, or pixels from your camera.
See it in actionA minute of footage
A minute of footage
beats a thousand bullet points.
Live alerts
Nudges, your way
Slouch and the Droid pops into the corner of your screen. Tune it to suit you - silent visuals, a gentle voice line, or as discreet or loud as you like.
Your dashboard
See your posture improve
Daily streaks, weekly trends, and a breakdown of how you slouch most - numbers only, never a frame from your camera.
"I literally can't hold my posture without this app. It's an absolute game changer. It takes a little bit to set it up correctly but it is absolutely worth it."
Verified
"I've been using this app on-and-off for a while to battle some long due debt in my posture. The days i get neck/shoulder-complaints are the days i forgot to start the app. Well done to the author."
Verified
"SitApp is the best!"
Verified
"I spend most of my day at a desk, but SitApp has helped me to keep my back pain in check. I've tried other posture tracking methods but this is the only one that I've been able to stick with. Would recommend!"
Verified
"As a person that cares a lot about posture, I have to say, SitApp is the only app that has really helped me. I tried devices in my back, my neck, straps, anything you can imagine. But SitApp is the ultimate solution! Thanks for making it! ❤️"
Verified
"SitApp has been a great addition to my daily routine. The gentle reminders actually help me notice bad posture before it turns into back or neck pain, and the setup was quick and easy. It's become one of those small habits that makes a real difference over time. On top of that, the creator has been really responsive with support and seems genuinely open to feature requests, which makes me confident the app will keep getting better."
Verified
"I have genuinely been slouching much less because of SitApp. My back pain has basically disappeared after a few weeks of use."
"It's great to have something to remind me about my posture. So helpful during long work sessions!"
"SitApp is such a great solution to a problem we all face. Simple, effective, and doesn't get in the way."
See it in action
The whole thing, in under two minutes.
Train the Droid on your posture, then get a gentle nudge whenever you slump. Every frame stays on your laptop.
PricingFree to start.
Free to start.
Stupidly cheap to upgrade.
Free
Perfect to see if a robot watching you actually changes your posture. (It does.)
$0 /forever
No card. No trial timer.
- 1 hour of daily posture monitoring
- AI-powered slouch detection & alerts
- Daily progress dashboard
- Mac, Windows & Linux
Pro
Unlimited monitoring, custom Droid moods, multiple desk setups, and break reminders.
$34.99 /year
That's just $2.92/mo. 7-day free trial.
- Everything in Free
- Unlimited monitoring - no daily limit
- Break reminders to stand and stretch
- Multiple desk setups - home, office, standing
- Custom Droid moods & voice alerts
- Priority support from a real human
Lifetime
Commitment-phobe? Pay once and own your Droid forever - no renewals, ever.
$89.99 one-time
One payment. Full Pro forever.
- Everything in Pro, forever
- One-time payment
- No subscription, no renewals
Cancel anytime. Free plan stays free if you do.
Frequently askedThings people ask before
Things people ask before
letting a robot watch them.
Is my webcam data really private?
100% private. Your webcam feed never leaves your computer - not even for a moment. The Droid runs entirely on your device using a small on-device AI model. No recordings, no uploads, no exceptions.
How does SitApp detect my posture?
The Droid learns what good posture looks like specifically for you. During a quick setup, you show it your best posture and your typical slouch. From then on, it monitors in the background and sends gentle reminders when you start to slip.
Will it slow down my computer?
SitApp is designed to be lightweight. It uses minimal CPU and memory, running quietly in the background without affecting your work. Most users forget it's even there until they get a helpful nudge.
Does it work with standing desks or video calls?
Yes to both. SitApp adapts to however you work - sitting, standing, or switching. Quick recalibration takes about 10 seconds. It works alongside Zoom, Teams, and other video apps without conflicts.
What are the system requirements?
macOS 12+, Windows 10+, or most modern Linux distributions. You'll need a webcam - your laptop's built-in camera works great, or any external USB webcam. About 700MB of disk space.
Is SitApp on the Mac App Store?
Yes - get SitApp on the Mac App Store. You can also download it directly from this site for macOS and Windows; the direct macOS builds are Apple notarized and Windows builds are code-signed. Both channels offer the same posture coaching, so pick whichever you prefer.
Can I cancel the Pro plan anytime?
Absolutely. Cancel with one click, no questions asked. You'll keep Pro features until the end of your billing period. The free plan is genuinely full-featured - Pro is there for people who want extra insights, not because we've locked essential features behind a paywall.
“
Built by someone who slouched too much.
I built SitApp because I had the same problem you do. Years of desk work, back pain creeping in, and nothing actually stuck - posture braces, standing desks, phone reminders. So I made the tool I wished existed: a quiet desktop app with on-device AI that can actually see when I'm slouching, and gently nudge me back upright in the moment.
No wearables. No data leaving your machine. Just the Droid, watching your back - literally.
Ali - creator of SitApp
Your back is going
to love this.
Free forever, two-minute install. Mac, Windows, Linux. The Droid is waiting patiently in your dock.
No card · Cancel anytime · Free plan stays free