Security built in.
CleanSheet analyses spreadsheets locally in Excel. Your data never leaves your environment.
Built to keep your data yours.
CleanSheet works entirely inside Microsoft Excel. Your spreadsheets stay where they are.
Local processing
All analysis happens in the active Excel session. Data is processed locally, not on external servers.
No data storage
CleanSheet does not store your spreadsheets. No files. No backups. No retained metadata.
No training on your data
Customer data is never used to train models. Not by us. Not by third parties.
No data sent out
CleanSheet does not transmit spreadsheet data during analysis. Your work stays inside Excel.
Microsoft’s security model
CleanSheet is an Excel add-in and inherits Microsoft’s sandboxing and isolation controls. It has no access to your OS.
Minimal permissions
CleanSheet only accesses the active workbook. Nothing more.