Large CSV Analysis
That Stays on Your Laptop.
When your CSV is too large for spreadsheet-style tools and too sensitive to upload, DataOlllo helps you open, clean, and analyze 10+ million rows locally.Private by default. No cloud upload required.
Built for Large CSV Work.
Open, inspect, filter, merge, split, and summarize big files without sending them away.
The Speed Problem
Spreadsheet-style tools freeze on large files. DataOlllo opens and filters 100M rows without turning a simple check into a waiting game.
The Privacy Problem
Cloud tools can be blocked by upload limits, policy rules, or sensitive columns. DataOlllo runs local analysis on your device, with optional AI workflows designed around private data handling.
The Cleanup Problem
Large, messy datasets from sales, finance, healthcare, logs, or research are hard to clean, merge, and analyze. DataOlllo gives you visual workflows for big files without writing scripts.
Start with the problem you have.
Practical guides for oversized CSV files, upload limits, local workflows, and private analysis.
What do you need to fix today?Select a workflow to see how we handle it.
View all featuresAd Report Merger
Stop manually merging CSV exports. Combine multi-channel ad reports into one master file instantly.
Bank Reconciliation
Compare statement files, payment records, and exported CSVs. Find missing transactions in seconds.
Data Cleanup & Analysis
Clean, group, and filter massive healthcare or life science datasets instantly, even millions of rows.
And yes,
it talks.
Don't want to write scripts? Just ask.
"Merge these files and show me the profit by Q3"
