Published by SMCS AI Factory · Last updated:
About StackNest
StackNest is a factory of simple utilities — tools that do one thing well. Fast, accessible, and usable without an account.
What we do
We publish free online tools that help people check device and network facts in the browser: battery level, connection type, hardware estimates, game-related latency, VPN/WebRTC leak checks, and more. Each tool is designed to show an honest result above the fold — including when a browser API is unavailable.
Who publishes StackNest
StackNest is published and maintained by SMCS AI Factory, an AI studio based in Indaiatuba (São Paulo, Brazil) that builds custom agents, automations and AI products for businesses.
The studio was founded by Marcelo Sá Monte, who is named on its own about page — final responsibility for what you read here sits with a person, not with a brand. Founder profile ↗
The same operation writes what you read here, maintains the measurement code behind each tool, and answers info@smcs.com.br. One identifiable party is accountable for the whole site — including when a measurement is inconclusive and we say so instead of inventing a number.
How this content is produced
The explanatory text on this site is drafted with AI assistance and published under human review. We say so plainly because Google asks publishers whether the use of automation is self-evident to visitors, and because the studio behind StackNest builds AI systems for a living — hiding it would be the strange choice.
Automation writes prose. It does not produce the results you see: every measurement comes from code that runs in your browser, described step by step on the methodology page. When the copy quotes a number about one of our own tools — that a family emoji counts as 5 code points here, 8 by JavaScript's own length property, and 1 to the reader — that number is read from the source and locked by an automated test, so the two cannot drift apart unnoticed: the suite runs on every push and a mismatch turns it red.
The rule that costs us the most is the one we keep: a technical claim we cannot tie to a primary source gets cut, not softened. Two that did not survive it — that Counter-Strike 2 routes through Steam Datagram Relay, because Valve's documentation describes that system for Team Fortress 2 and not for CS2; and the alphanumeric CNPJ, which we describe as a dated change but did not implement, because the check-digit rule for letter positions was not verifiable in a primary source.
Why automate at all: this is a small operation keeping 26 tools documented in two languages, in step with the code behind them. Automation is what makes that maintainable. What it does not do is decide what is true — that part a person signs for.
Farm tools on stacknest.tech
The utilities product lives at farm.stacknest.tech under the StackNest umbrella (stacknest.tech). Other initiatives use their own subdomains.
How we choose what to build
A tool earns a place here when three things are true at once: people actually search for the answer, the browser can answer it honestly without an account or an upload, and the result fits on one screen. That rules out most "complete system scanner" ideas — the web platform cannot deliver them, and pretending otherwise is how a utility site turns into noise.
What this site does not do
It does not ask you to sign up, does not keep your results, does not upload your battery level or hardware profile to be "analysed" on a server, and does not invent a number when a probe fails. Where the browser refuses to answer, the tool says so — that rule is written out in detail on the methodology page.
Product principles
Honesty over fake precision. When a browser does not expose real hardware or battery data, we say so. We do not invent percentages or “full system profiler” claims that web APIs cannot support.
Privacy by default. Most tool logic runs locally in your browser. We do not require signup to use the free tools. See our Privacy Policy for ads, affiliates, and any server-side details.
Speed and clarity. Mobile-first layouts, clear language, and a short path to the result. Optional affiliate suggestions only appear when they match a real problem the tool is about.
How we fund the site
StackNest is free to use. We may show ads (for example Google AdSense) and contextual affiliate links. Affiliates never change the technical result of a tool. You can read more in Privacy and Contact.