Engineering calculations
you can prove.
Calculation software for engineers who need unit-aware math, visible assumptions, and result lineage they can hand to a peer reviewer with confidence.
Proof first
The product promise is simple: make the calculation readable, checkable, and portable enough that someone else can follow it.
Trace every step
Keep formulas, assumptions, units, and intermediate results visible in one worksheet instead of scattered across cells or screenshots.
Validate with the engine
Each node is checked for unit consistency, constraint satisfaction, numeric residuals, and sanity before you trust the result.
Own the file
Desktop worksheets stay on your machine as JSON and can be exported to PDF, DOCX, or HTML whenever you need to share the work.
Work without the cloud
The desktop app runs offline after activation. AI help is optional, and the AI never performs the calculation.
Watch ProveCalc catch the kinds of errors that usually hide in a sheet
Start with a real worksheet, then see how the engine keeps the structure reviewable instead of burying the logic.
- ✓See a real worksheet build from inputs to checked result.
- ✓Watch ProveCalc flag a unit mismatch before it becomes a report problem.
- ✓Follow the audit trail from symbolic expression to export-ready output.
The problem is not just math
Engineers are forced to choose between expensive subscription tools, opaque spreadsheets, and cloud-first workflows that make verification harder than it should be.
Subscription pressure
Annual pricing and license-server dependency turn a core calculation tool into an ongoing operating risk.
Black-box spreadsheets
Cell references hide logic, make review slow, and turn handoff into a scavenger hunt.
Cloud-only workflows
Sensitive calculations and field work do not always belong behind an internet requirement.
Built to be reviewed
ProveCalc is designed to help you show the reasoning, not just the answer.
Full audit trail
Show formulas, variables, assumptions, and intermediate values in plain view so peer review starts from evidence instead of reconstruction.
Unit intelligence
Automatic conversion and dimensional analysis help catch the category of mistakes spreadsheets hide until late.
AI-assisted structure
AI can draft worksheet structure and notes. The compute engine still owns the math, so generated suggestions do not bypass verification.
Fast symbolic compute
SymPy + Pint give you exact symbolic workflows, goal solving, and unit-aware evaluation without turning the worksheet into a black box.
Where it fits
Early buyers usually need one of these three outcomes: clearer review packages, fewer unit mistakes, or a worksheet they can keep out of a spreadsheet.
Mechanical sizing
Document loads, geometry, material properties, and solved dimensions in a worksheet another engineer can review line by line.
Civil load paths
Keep tributary assumptions, conversions, combinations, and resulting checks in a single traceable calculation package.
Process and units sanity checks
Build worksheets where unit consistency is part of the workflow instead of an after-the-fact spot check.
Why trust it
Buyers do not just need features. They need to know how the tool behaves when it matters.
Desktop compute is local
The desktop app evaluates with a local SymPy + Pint sidecar process. Your mathematical content does not leave the machine for calculation.
Files stay readable
Worksheets are stored as open JSON and remain exportable and readable outside the app.
Support is accountable
Built by The Mnemosyne Research Institute in Arizona, with direct support at contact@themnemosyneresearchinstitute.com.
Low purchase risk
One-time license, 3 machine activations, 30-day refund, and no subscription server checks for desktop use after activation.
Built by The Mnemosyne Research Institute
Independent software built in Safford, Arizona. Support, licensing, and product questions go straight to the team that ships the product.
Web demo, desktop app, and AI each do different jobs
This is the operational model in plain language so buyers do not have to infer it from legal copy.
Predictable pricing
One license, one price, local files, and no subscription to keep using the version you already bought.
Includes 3 activations, free updates for life, and a 30-day money-back guarantee.
Try ProveCalc free
No credit card. No install. Open the browser demo and see how the worksheet model feels before you buy the desktop app.