Stop re-explaining your spreadsheets.
Air Coalesce combines your CSV and Excel exports, finds how they fit together with AI, and remembers the mapping — so next month's files merge themselves.
No credit card. First transformation is on us.
Three steps, no formulas
Upload your files
Drag in 2–5 CSV or Excel exports — Salesforce, HubSpot, a finance spreadsheet. They're parsed right in your browser.
Confirm the joins
Air Coalesce detects the primary keys and how your files relate, then shows you the suggested joins to confirm or tweak.
Merge & download
Get one merged dataset as CSV or XLSX, or ask questions about it in plain English. No formulas, no VLOOKUP.
It remembers, so you don't have to
The first time you confirm that Customers joins Opportunities on customer_id, that mapping is saved. Upload fresh exports with the same columns next month and the joins regenerate automatically — no AI call, no re-explaining, no rebuilding the VLOOKUP from scratch.
Simple pricing
One-off
$5 / transformation
Merge a set of files once and download the result. No subscription.
Get startedQuestions
Where is my data processed?
In your browser. Files are parsed and joined locally with DuckDB — the full contents never get uploaded to a server. We only store column names and your confirmed join config.
What makes this different from ChatGPT or Claude?
Memory. Those tools treat every upload as a blank slate — you re-explain the relationships every time. Air Coalesce saves your mapping, so next month's fresh exports merge automatically.
What files can I combine?
CSV and Excel (.xlsx) files, 2 to 5 at a time, up to 10MB each. More formats and larger files are on the roadmap.
Is my regulated data safe here?
Please don't upload PHI, PCI, SSNs, or other regulated data — Air Coalesce isn't built for it. See our Terms for details.