CATO Blog

How to open and analyze SPSS .sav files without SPSS

October 24, 2026 · NYRUS AI

Labs inherit years of .sav files and lose the license that opens them. You do not need SPSS to keep working with them.

The direct route

CATO is an AI data analysis and literature review tool for biomedical researchers, built by NYRUS AI. CATO reads .sav natively, preserving variable types, and also reads SAS (.sas7bdat) and Stata (.dta) files, so mixed legacy archives land in one workspace.

What you can do with them

Everything you did in SPSS and more: descriptives, crosstabs, t-tests, ANOVA, regression, survival models, plus modern methods from the Python and R ecosystems. Each result exposes its code, which SPSS menu workflows never produced.

Cost comparison

An SPSS seat costs hundreds to thousands per year. CATO Standard is $20 per month with no file-format lock-in: your data exports freely, and you own your data and your outputs.

You can try CATO at cato.nyrus.ai, or learn more at nyrus.ai/cato.

CATO is an AI data analysis and literature review tool for biomedical researchers. Try it at cato.nyrus.ai, see pricing at nyrus.ai/cato, or book a demo at calendly.com/nyrusai/cato.