An honest side-by-side for dose-response work. Prism is a deep, mature statistics suite; DoseFit is a fast, focused fitter that's free to start. Here's where each one fits.
| For dose-response fitting | DoseFit | GraphPad Prism |
|---|---|---|
| Price | Free core · Pro from $15/seat·mo | ~$300+ / seat / year |
| Install & setup | None — runs in the browser | Desktop install + license |
| Time to first fit | Seconds — paste & go | Minutes — new project, table, analysis |
| 4-parameter logistic (4PL) | Yes | Yes |
| 95% confidence intervals | Yes — bootstrap | Yes |
| 1/Y & 1/Y² weighting | Yes | Yes |
| Outlier handling | Flag (advisory) | Automatic detection (ROUT) |
| Compare to published data (live) | Yes — ChEMBL overlay | No |
| Publication PNG / SVG export | Yes | Yes |
| Data stays on your machine | Yes — nothing uploaded | Yes — local desktop |
| Saved & versioned methods | Pro (early access) | Yes |
| Audit trail & e-signatures (Part 11) | Compliance tier (in development) | No |
| Breadth of models & statistics | Focused on dose-response | Extensive — ANOVA, regression, survival… |
| Maturity & track record | New (2026) | Industry standard, decades |
You need a full statistics package beyond curve-fitting — ANOVA, broad regression, survival analysis — or your lab is already standardised on Prism's ecosystem and its long validation history. For wide-ranging analysis, it's the deeper tool, and we'll say so.
Your day-to-day is fitting dose-response curves and you want it instant, in-browser, and free, with confidence intervals, a live literature comparison, and clean exports — plus a path to saved methods, reports, and lab compliance without enterprise pricing.
Comparison reflects DoseFit as of June 2026 and publicly documented Prism capabilities. GraphPad Prism is a trademark of Dotmatics/GraphPad; DoseFit is not affiliated with or endorsed by them.