Your monthly spreadsheet cleanup should not start from scratch.
Air Coalesce learns how your exports connect, remembers the mapping, and turns future CSV and Excel drops into clean, merged files in one click.
No credit card. First transformation is on us.
Upload to clean file in one pass, joins detected, conflicts surfaced, and answers on the merged data.
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. DuckDB runs the exact same merge on your new rows and hands back a clean file, every time.
Simple pricing
One-off
$5 / transformation
Merge a set of files once and download the result. No subscription.
- Merge one set of files
- AI-detected joins
- CSV or XLSX download
Pro
$19 / month
For the monthly re-run loop, same schema, fresh data, one click.
- Unlimited transformations
- Saved mappings that auto-apply
- Chat with your data
- Deterministic re-merge on fresh exports
Questions
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?
Those tools describe a join in chat, they can't reliably emit an exact, complete merge of thousands of rows as a clean file, and you re-explain the setup every time. Air Coalesce saves your mapping and runs the join deterministically in your browser, so next month's fresh export re-merges in one click and downloads as a clean CSV or XLSX, same result, every row, every time.
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.