GraphPad Software

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GraphPad Software Inc. is a privately held California corporation. They publish scientific software, including:

  • GraphPad Prism combines 2D scientific graphing, biostatistics with explanations, and curve fitting via nonlinear regression (Windows and Mac).
  • GraphPad InStat guides students and scientists through basic biostatistics (Windows).
  • GraphPad StatMate performs power and sample size calculations (Windows).
  • GraphPad QuickCalcs are a set of statistical calculators (Free, web-based).

GraphPad Prism[edit]

GraphPad Prism
Developer(s)GraphPad Software, Inc.
Stable release
Operating systemmacOS and Windows
TypeScientific graphing, statistics and nonlinear regression (curve fitting)
LicenseCommercial proprietary software

GraphPad Prism is a commercial scientific 2D graphing and statistics software available for both Windows and Macintosh computers.

Alternatives to GraphPad Prism are SciDAVis, and interfaces to R.[1]


  • Provides statistical guidance for novices.
  • Analysis checklists review if an appropriate analysis was performed.
  • Nonlinear regression with many options (remove outliers, compare models, compare curves, interpolate standard curves, etc.).
  • Live links. When data are edited or replaced, Prism automatically updates the results and graphs.
  • Analysis choices can be reviewed, and changed, at any time.
  • Automatic error bars. Raw data (replicates) can be entered, and then plotted as mean with SD, SEM or confidence interval.

GraphPad InStat[edit]

GraphPad InStat
Developer(s)GraphPad Software, Inc.
Stable release
Operating systemWindows

GraphPad InStat is a commercial scientific statistics software available for both Windows and Macintosh computers.


InStat is designed for statistical novices. It helps you pick an appropriate test by asking questions about the data. It presents results in simple paragraphs, with a minimum of statistical jargon. InStat's help screens review the use of each test and explain every portion of the results, and provide unique analysis checklists to confirm that the data have not violated any assumptions of the test, and that the test answers the right question.

External links[edit]


  1. ^ PubMed articles citing GraphPad Prism are 475 as of December 2017, while PubMed articles mentioning R are about 1320.