Published by Pelion — we make one of these two products. Every SitApp fact below comes from SitApp’s own pages, linked at the bottom, last checked 2026-07-27.

Pelion vs SitApp

Published by Pelion· Last updated July 27, 2026

Both analyse posture from your webcam on your own machine. The practical differences: Pelion monitors all day for free and runs only on macOS, while SitApp’s free plan covers 1 hour of monitoring per day and it also runs on Windows and Linux. Pelion reports estimated neck load in kilograms and exposes an MCP server; SitApp exposes a local REST and Prometheus API.

Side by side

Pelion Posture compared with SitApp
Criterion	Pelion Posture	SitApp
Free monitoring time	All day — no daily limit	1 hour of monitoring per day
What the paid tier adds	Advanced history, Guard, Recovery and agent actions. It does not unlock more monitoring time.	Unlimited monitoring, plus a 7-day trial of every feature
Paid price	No price — Pro is not open yet	Not stated on SitApp's pricing page
Platforms	macOS 14.0+ only	Mac, Windows and Linux
Where analysis runs	On-device	On-device
What the number means	Estimated neck load in kg or lb, relative to your own calibrated baseline (Hansraj 2014)	Daily streaks, weekly trends, a breakdown of how you slouch most, and posture time
Reminders	Off by default; at most one card every five minutes	Real-time alerts
Automation interface	Model Context Protocol over stdio, no listening port, off by default	A local HTTP REST API and a Prometheus metrics endpoint on localhost:6543
Account required	No — monitoring never needs an account	Not stated on the pages we checked
Download size	16.4 MB	About 700MB
Cancellation	Nothing to cancel — nothing is on sale	Cancel any time, access continues to the end of the billing period

Cells reading “Not stated” mean the vendor does not publish that fact on the pages we checked — not that the product lacks the capability.

Which one fits

Choose Pelion if

You want monitoring running the whole working day without paying.
You work on a Mac and do not need Windows or Linux.
You want the cost expressed as weight on your neck rather than as a percentage.
You want an AI client like Claude Code or Cursor to read your posture context.

Choose SitApp if

You need Windows or Linux — Pelion does not run on either.
An hour a day of free monitoring is enough for you.
You want to scrape posture metrics with Prometheus or plain HTTP.
You prefer streak and trend framing to a load estimate.

If you want to automate it

This is the clearest architectural difference, and neither approach is simply better.

SitApp documents a local HTTP REST API and a Prometheus metrics endpoint on localhost:6543. Anything that can make an HTTP request can read it, and a Prometheus scraper can graph it alongside your other metrics. SitApp’s documentation does not state whether that server is enabled by default.

Pelion ships a Model Context Protocol server instead: stdio only, no listening port, off until you switch it on. Your AI client launches it directly. That makes it a poor fit for a dashboard and a good fit for an agent, and it means there is no socket on your machine to secure. It exposes 7 resources and 5 free tools; the 5 agent behaviour tools are Pro and not open.

What each one does not do

Pelion’s limits

macOS only. No Windows, no Linux, no mobile.
Pro is not open, so its features are unavailable to everyone today.
The bundled MCP server is Apple Silicon only, though the app itself is universal.
Neck load is an estimate relative to your own baseline, not a clinical measurement.

SitApp’s limits, as published

Free monitoring is capped at 1 hour of monitoring per day.
The Pro price is not printed on their pricing page.
It needs About 700MB of disk space.
Whether the local API is on by default is not documented.

How we compared

Every SitApp figure was read from SitApp’s own published pages on 2026-07-27— no reviews, roundups or third-party summaries. Where their pages do not state something, this page says so rather than inferring it. Pelion’s figures come from the shipped build and the app’s own source of truth.

We re-check SitApp’s pages at least every 30 days and whenever their pricing changes; the next re-check is due 2026-08-26. That is a manual commitment enforced by our pre-deploy checks, not something this page detects on its own. We have not tested SitApp’s app ourselves, and nothing here is a benchmark or a rating.

SitApp sources

All facts about SitApp on this page come from these pages, published by SitApp.

SitApp — home — SitApp. Checked 2026-07-27
SitApp — Pricing — SitApp. Checked 2026-07-27
SitApp — Local API & Automation — SitApp. Checked 2026-07-27

Common questions

Is Pelion or SitApp better?

That depends on which constraint binds. If you want posture monitoring running all day without paying, Pelion has no daily limit. If you need Windows or Linux, Pelion does not run there at all and SitApp does. This page is published by Pelion, so weigh it accordingly and check both vendors' own sites.

Is everything in Pelion free?

No, and it would be wrong to say so. All-day monitoring, live load, today's summary, fatigue and MCP reading are free. Pelion Pro adds advanced history, Guard, Recovery and agent actions — it is not open yet and has no price.

How much does SitApp cost?

SitApp's pricing page describes a Pro plan but does not print a figure — it says "Costs less than a coffee a month". We are not going to guess at a number on their behalf; check their pricing page for the current terms.

Do both apps process video on your own machine?

Both state that they do. SitApp's site says "Your webcam feed never leaves your computer." Pelion analyses frames on your Mac and discards them, and neither product is described as uploading video.

Which is easier to automate against?

Different shapes rather than better and worse. SitApp documents a local HTTP REST API and a Prometheus metrics endpoint on localhost:6543, which any HTTP client or Prometheus scraper can read. Pelion speaks Model Context Protocol over stdio with no listening port, which suits AI clients like Claude Code and Cursor but is not something you can curl.

When were these SitApp facts last checked?

Every SitApp figure on this page was read from SitApp's own pages on 2026-07-27. We re-check at least every 30 days — next due 2026-08-26 — and our pre-deploy checks fail if that lapses, so a stale comparison cannot ship.

Comparing free tiers more broadly? Free posture apps for Mac →

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Published by Pelion. SitApp is a product of its respective owner and is not affiliated with Pelion.