Upload a document (PDF, Word, Excel, TXT, CSV) — the AI will extract all formulas and calculations from it, an independent engine will recalculate each one, and you will receive a report with highlighting: which calculations are correct and where the error is with the correct figure.
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$0.75 per file
🎁 First processing is free, no registration required
Liked it? From now on it's paid, but fair
Free trial used. No subscriptions — pay cents for actual work:
💸 Fair price: $0.75 per file instead of manual auditing for hundreds of dollars
🔗 Single balance for all MTECH tools — top up once, use everywhere
🔒 Files are deleted after one hour, we store nothing
Checking your calculations
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Verified calculations
The report is stored for 60 minutes, then it is permanently deleted
Features
We find all calculations: estimates, areas, volumes, sums, unit conversions (sq.m → ha, etc.)
Each formula is recalculated independently — the service does not "trust" the text, but verifies it
Report in your language: errors are highlighted, with the correct value next to them
Privacy: the source file is deleted immediately after reading, the report lives for 60 minutes
How It Works
Upload a file — we will immediately show the exact cost. The first check (1 file) is free
Click "Check": AI will extract the formulas, and Python will recalculate each one from scratch
Get a report with highlighting: ✅ correct calculations and ❌ errors with correct figures
FAQ
Which files can be checked? PDF, DOCX, XLSX, XLS, TXT, CSV, and MD up to 30 MB. The AI extracts all formulas and calculations from the text — estimates, areas, volumes, total sums — and each one is recalculated automatically.
How much does the check cost? The first check (one file) is free. After that — $0.75 per file from a single MTECH balance, which is topped up with cryptocurrency in 1–2 minutes. No subscriptions.
What happens to my document? The file is read once and deleted immediately after text extraction — we do not store documents. The check report is available for 60 minutes, then it is permanently deleted.
What if there are no errors or the check fails? If there are no errors, you will receive a report where all verified formulas are marked in green. If the check fails for a technical reason, the funds will be automatically returned to your balance.