Fair, transparent pricing. Free opens it, paid fixes it.
Opening, sorting, charting, and CSV export never cost anything, at any file size. Upgrade to Pro or Enterprise when you need to clean data, query in plain English, or prove regulatory compliance.
Free
Everything Excel does, on files Excel cannot open. No row limits, forever.
- Open any file size (50 GB+ tested)
- Zero row limits (past Excel's 1,048,576 wall)
- Instant streaming index (<1 sec first view)
- Sort, multi-filter, search & find
- Spreadsheet cell edits & drag-fill
- Summary stats, histograms & pivots
- Ragged line recovery for messy exports
- Fast CSV export
Pro
Transform messy data, ask plain-English questions, and run DuckDB SQL offline.
- All Free features included
- Plain-English ⌘J Assistant (local SLM)
- Read-only DuckDB SQL console
- Cleaning transforms (dedupe, split, trim, case)
- Reusable data cleaning recipes
- Export Excel workbooks (auto-split at 1M rows)
- Export charts as high-res PNG/SVG
- Save & reopen .bigxl sessions
- Join and merge multiple large CSVs
Enterprise
Deterministic PII masking and verifiable export security for regulated data.
- All Pro features included
- Automatic PII detection (12 detectors)
- Algorithmic verification (Luhn, mod-97, SSN)
- Consistent cross-file pseudonymization
- Zero-leak export barrier (guaranteed in query)
- Org-wide mandatory redaction rules
- Verifiable audit trail & change log
- Bulk folder batch processing
- One IT batch key file for all machines
All paid tiers include full offline licensing with zero telemetry.View detailed feature checklist below ↓
Comprehensive Comparison
What each tier unlocks. Nothing hidden.
Every feature in BigXL is engineered to respect your machine and your data. Compare what is free forever versus what is unlocked with a paid key.
Core Spreadsheet Engine (Files That Break Excel)
Data Cleaning, DuckDB SQL & Local SLM
Enterprise Compliance, PII Redaction & Security
Looking is free forever. Modifying data in bulk, asking questions, and export to Excel are Pro ($49/yr). Masking personal data deterministically and corporate compliance are Enterprise ($99/seat/yr).
Frequently Asked Questions
Common questions before you buy.
Clear answers about our offline machine keys, team volume discounts, hardware migrations, and trial terms.
How does the offline machine licence key work?
BigXL never communicates with a licence server—that is the strict offline guarantee the software is built upon. Each paid key is cryptographically signed against your computer's native hardware identifier (read in Settings → Licence). One key is one seat. When purchasing 10 or 50 seats, IT receives a single batch bundle file containing all keys that can be pushed to all machines at once.
How does the '1 extra seat free for every 10 seats' volume perk work?
When you purchase BigXL Enterprise, you automatically receive 1 bonus seat for every 10 seats ordered. For example: order 10 seats and receive 11 keys (saving $99); order 20 seats and receive 22 keys (saving $198); order 50 seats and receive 55 keys. The extra seats are generated directly into your batch file.
What happens if a computer breaks, dies, or is replaced?
A hardware replacement never costs you a licence. Each paid seat includes 3 instant, free machine key migrations per year through our self-service activation page. Enter the new machine's identifier, and a replacement key is minted immediately.
Can I try all features before purchasing?
Yes. BigXL includes a built-in 7-day trial of every single paid feature (Pro and Enterprise). The trial starts when you click 'Start my seven days' in Settings, not when you install, so you have plenty of time to test on your own largest and messiest files. No credit card is required.
What is the refund policy?
We offer a 14-day, no-questions-asked money-back guarantee. If BigXL doesn't handle your files or doesn't fit your workflow, email support@bigxl.app within 14 days of purchase or use the link in your receipt, and you will receive a full refund.
How are VAT, sales taxes, and invoices handled?
Payments are processed securely via Lemon Squeezy acting as Merchant of Record. They automatically calculate and remit sales tax and EU/UK VAT, and provide standard B2B tax receipts and invoices suitable for corporate expensing and procurement.
Is any data uploaded to cloud servers or third-party APIs?
Zero. BigXL has no network code. Files are read directly from your local drive. The DuckDB query engine runs locally, and the ⌘J language model runs completely on your CPU. We literally cannot see your files or query results.
Try BigXL on your own worst file today.
Open 10 GB+ CSV files without Excel crashing. 7-day full trial of every paid feature, no credit card required.