Ingegno Labs
About
How the tools work, why your file stays with you, and who makes them.
Why it is safe
Nothing to install. Nothing uploaded.
Your file stays with you.
It works like a calculator: the math happens right there, on your computer, not somewhere else.
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Nothing to install
It opens in the browser like any website. No download, no admin rights.
How it works technically
HTML, JavaScript and WebAssembly. Current Chrome, Edge, Firefox and Safari.
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Your file never leaves your computer
Not the file, not a piece of it, not even its name. There is no server on the other side.
How it works technically
The page's Content Security Policy (
connect-src 'none'on the free tools) blocks any upload. Check it in F12 → Network. -
Reproducible results
Fixed rules and arithmetic: the same file always gives the same result, today and a year from now.
How it works technically
Deterministic algorithms and no external service. Calculations cite the standard and edition used.
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Your original stays untouched
The tool never changes the file you opened. The result is always a new file.
How it works technically
The browser only gets read access to the file you pick; the output is a download or a new file you choose.
Four rules for every tool
- Processing happens on your computer. The code runs in the browser (WebAssembly or JavaScript), in a separate process. The conversion is the same as in the installed program.
- The page talks only to its own site, or to no one. The free and engineering tools have no internet access at all. In the OST Saver, the only calls are for licenses and payment, and they never carry your file.
- No third parties. No CDN, no analytics, no outside fonts. The one exception is the payment window (Paddle or Mercado Pago), which opens only when you decide to buy. The SHA-256 of every published file is in sha256.txt.
- Checked against independent references. Every output format is verified with a reader from another source (for the OST Saver, libpff and Outlook itself with scanpst). Every engineering formula is checked against the standard's worked examples and a second implementation.
Licenses and prices
Opening, reading and calculating is free in every tool. You only pay for what becomes a deliverable:
- OST Saver: full conversion per mailbox (one-time payment, 30 days) or a Personal or Professional license (yearly).
- VasoCalc, GaugeLens and Measurement uncertainty: full report for one tag at US$ 3.99, with unlimited revisions for 30 days. The on-screen result and the printed summary are free.
- Free in full: MSG Saver (PDF and batches included), SIL Calc (report included), Header Trace, MetaClean, PDF Local, Rapporto, Ex Check, LOPA, PSV Calc, Fio Certo and Bancada.
A license is a digitally signed text, checked in the browser itself, and it works offline. The products are made by Ingegno Labs and sold by PIO SPORTS LTDA (Brazil); outside Brazil, Paddle.com is the reseller and Merchant of Record, in US dollars.
The lab
An independent lab in Macaé, Brazil
Ingegno Labs grew out of field work in oil and gas: gauge spreadsheets, calculation reports, Outlook mailboxes that had to be opened without sending anything out. Each tool solves a problem that actually came up, and runs on the computer of the person doing the work, with no account, no install and no server.
- PrivacyThe file is processed in your browser, and the page has no way to send it anywhere.
- AccuracyDeterministic math, checked against the worked examples published in each standard and against an independent second implementation.
- UsefulnessSmall tools, one job each, with a result you can hand over: a PDF, a report, a file.
Changelog · contato@ingegnolabs.com.br · SHA-256 of every published file