Posture Apps
How to pick a free posture app for Windows: NeckCure, SitApp and more compared (2026)
Looking for a free posture reminder app for Windows? Compare the free allowances, nudge styles and limits of NeckCure, SitApp, SitCoach and others, and find one you'll actually keep using at work.
You sat down properly. Then you answered a few emails, read a couple of documents, and here you are again, leaning towards the monitor.
If that’s you most days, an app that speaks up when you stop paying attention to your posture starts to sound useful. Search for a free one, though, and you’ll find some that really are free, some that give you a set amount of time each day, and some that are only a trial for a few days. Knowing which is which before you download saves a lot of time.
If you want something you can leave running through your working day on Windows without paying right away, we’d start with NeckCure. It gives you 4 hours of posture detection a day free and gradually dims your screen when you slouch, so you notice you’ve drifted again. If you’d rather not install anything at all, start with SitCoach in your browser.
This article is written by the NeckCure team and covers our own product alongside the alternatives. Plans and prices were compiled on September 22, 2026; each developer’s own pages are the final word.
The short answer: SitCoach is genuinely free with no paid plan, in the browser. For an installed app, NeckCure gives 4 hours a day free and SitApp 1 hour a day, neither expiring. Stop Slouching, Slouch Sniper and Slouch Guard are demos or trials, not free plans.
What does free actually get you?
| App | Free plan gives you | How you use it | Suits |
|---|---|---|---|
| NeckCure | 4 hours of posture detection a day, dimming nudge included | Installed app for Windows | Keeping an eye on your posture through a stretch of work |
| SitApp | 1 hour of posture detection a day, plus a 7-day Pro trial | Installed app for Windows, Mac, Linux | Short daily sessions, or if you also use Linux |
| SitCoach | Free posture detection, no paid plan | Browser | Not installing anything, not signing up |
| SitSense | Free posture tracking; history and more need Pro | Browser | People who like posture metrics |
| Real-time Posture Detector | A free version; the listing doesn’t spell out the limits | Installed app for Windows | Trying simple angle detection |
| Posture Reminder | Basic timed reminders | Installed app for Windows | No camera, just an occasional nudge |
The one that’s easiest to mix up is the last: a timed reminder is not posture detection. Posture Reminder uses no camera and nudges you when the time comes; the others judge your posture through the webcam. Both are useful, for different things.
NeckCure: 4 free hours a day, enough for half a working day
When you’re choosing a free app, it isn’t only whether you can use it, it’s how long. If you want nudges running from one to five in the afternoon while you write a report, NeckCure’s 4-hour daily allowance covers that stretch.
The nudge is direct: when it detects slouching, the screen slowly dims, and once you’re back in the posture you calibrated, the picture returns. If you’re someone who tunes out small notifications, that’s worth trying. If you’re retouching photos, or doing anything where screen brightness matters to you, check whether the style works for you.
The free version includes live posture detection, front and side modes, the dimming nudge, the floating posture widget and your score for the day. You get it every day; it isn’t a trial that expires in a few days.
Do note that the free version doesn’t include blink detection, full-screen break reminders or full history, which are Pro features. Once the 4 hours are up, you wait for the next day’s allowance or move to Pro for unlimited time. Pro is $3.99 a month or $34.99 a year.
The Windows version installs from the Microsoft Store, the interface is available in English, and there’s a Mac version. You’ll need to sign in with a Google account.
We’d recommend it to: anyone with a fixed stretch of computer work each day who wants to try continuous detection free, with a nudge on the obvious side.
Download NeckCure free and try 4 hours of posture nudges a day
SitApp: 1 free hour a day, and it runs on Linux
SitApp also uses the webcam to detect posture, and can nudge you on screen or with a voice line. It supports Windows, Mac and Linux, which is handy if you move between systems.
The free version gives you 1 hour a day. If you only want it on while you study, answer mail or get through a small task, that may be all you need. If you want nudges through a whole morning or afternoon, NeckCure’s 4 hours leaves more room.
SitApp also offers a 7-day Pro trial with no credit card, so you can try the paid features first. After that there’s a $34.99 a year subscription, or an $89.99 one-time purchase.
We’d recommend it to: anyone who needs a Linux version, likes voice nudges, or wants the option of buying once.
For the detailed differences between the two, read NeckCure or SitApp: which one fits you?
SitCoach: nothing to install, just open a page
If all you want to know is “can a camera really tell when I slouch,” SitCoach is the easiest way to find out. Open the page, allow the camera, and you’re going. No sign-up, no subscription plan.
It shows your posture through the colour of the browser tab icon and can send browser notifications. The feature set is simple, which suits anyone who only wants basic nudges.
Keep the tab open while you use it. If you’re in the habit of closing all your tabs mid-task, bear that in mind, and it’s worth checking how detection and notifications behave in your usual browser once you switch to another program.
We’d recommend it to: anyone who doesn’t want to spend anything, doesn’t want to install anything, and doesn’t need detailed records.
The other free options, and when they’re worth a look
SitSense suits people who are interested in posture data. It runs in the browser and offers free posture tracking; long-term trends and full history sit in Pro. Its site doesn’t state a daily time limit on the free tracking, which doesn’t mean every feature is free.
Real-time Posture Detector installs from the Microsoft Store and gives posture feedback from your neck and torso angles. There’s a free version and a $3.99 one-time Pro version. The listing doesn’t lay out the free limits clearly, so it’s harder to tell before downloading whether it fits.
Posture Reminder suits anyone unwilling to turn on a camera. Basic timed reminders are free; customisation and smart reminders are paid. It won’t know whether you’re slouching right now, but if all you need is a periodic “check your posture,” the approach is refreshingly simple.
Some apps are free to try, not free to keep
While you’re searching you’ll probably also come across Stop Slouching, Slouch Sniper and Slouch Guard. They all have a way to try them, but that isn’t the same as the long-term free plans above.
| App | How you try it | What it costs after (USD) |
|---|---|---|
| Stop Slouching | Live demo on its site | $2.99/month, $24.99/year or $39.99 one-time |
| Slouch Sniper | Live demo on its site | $19 one-time; its site says the price may rise |
| Slouch Guard | Free trial | $0.99 |
If you don’t mind paying a small amount, these belong on your list too. If your starting point is “I want to use it free every day,” pick from the earlier options.
How to choose one you’ll still be using next month
Start by thinking about when you’d use it. Wanting it on for an hour a day and wanting nudges all afternoon point to different free plans.
Then look at the style of nudge. Some people like a quiet on-screen hint, some need a voice, and some discover they ignore every small notification they’ve ever had. Picking one you’ll notice and can live with matters more than a couple of extra items on a feature list.
Camera privacy is worth checking too. Whether images are uploaded and whether posture data is stored online are two separate questions. NeckCure, for instance, processes camera images on your computer, with no recording and no uploading; SitSense says images stay in your browser while the service stores some posture values.
If you’re on Windows and want to try an app with a fairly generous free allowance and a nudge that’s hard to miss, NeckCure is a reasonable place to start. Pick the stretch of work where you most often forget your posture, leave it on, and see whether the dimming nudge suits you. If 4 hours a day is enough, stay on the free plan.
To compare the paid options as well, read on: 9 posture reminder apps for Windows, compared.