G*Power
6.7#37 in statistical analysis softwareFree planFree planmacOSWindows
VisitG*Power vs IBM SPSS Statistics
IBM SPSS Statistics
8.0#1 in statistical analysis softwareAPILinuxmacOSSelf-hosted
VisitWhat both publish
| Fact | G*Power | IBM SPSS Statistics |
|---|---|---|
| Deployment | both | desktop |
| Free plan | Yes | No |
| Headquarters | Düsseldorf, Germany | Armonk, New York, United States |
| Purpose | G*Power computes statistical power analyses for many t, F, χ², z, and some exact tests. | IBM describes SPSS Statistics as a statistical analysis platform for extracting insights from data using statistical testing, predictive modeling, regression, forecasting, data preparation and automated analysis. |
G*Power plans
- FreeFree
- G*PowerFree
IBM SPSS Statistics plans
- Base subscription$99 a month
- Custom Tables and Advanced Statistics$79 a month
- Forecasting and Decision Trees$79 a month
- Complex Sampling and Testing$79 a month
- Base EditionPriced on request
- Base Edition—
Pick G*Power if…
You want what its maker publishes above — check its page for the details.
Pick IBM SPSS Statistics if…
It suits students, faculty, academic institutions, and organizations that need statistical analysis, modeling, or forecasting. Its desktop platform support and licensing restrictions are worth checking before choosing a plan.