Phitter

Spec sheet

Purpose

Phitter fits observed data to theoretical probability distributions and ranks candidate models.Read 9 Oct 2026 · phitter.io

Intended users

The project describes applications in data science, operations research, and artificial intelligence.Read 9 Oct 2026 · phitter.io

Deployment

bothRead 23 Sep 2026 · phitter.io

Free plan

YesRead 23 Sep 2026 · phitter.io

Bayesian analysis

NoRead 23 Sep 2026 · phitter.io

Browser processing

The fitting calculation runs locally through Pyodide and WebAssembly, and observations are not sent to a Phitter fitting server.Read 9 Oct 2026 · phitter.io

Creator

The project says it was created by Sebastián José Herrera Monterrosa.Read 9 Oct 2026 · phitter.io

Data import formats

TXT, CSV, XLSX, public URLRead 23 Sep 2026 · phitter.io

Data input

Users can paste observations or import TXT, CSV, XLSX, or a file served from a public URL.Read 9 Oct 2026 · phitter.io

Distribution catalogue

The web application covers 87 distributions: 77 continuous and 10 discrete.Read 9 Oct 2026 · phitter.io

Goodness-of-fit

It reports Kolmogorov–Smirnov and chi-square results for discrete fits, and also Anderson–Darling results for continuous fits.Read 9 Oct 2026 · phitter.io

Minimum sample

The web application requires at least 20 numeric observations.Read 9 Oct 2026 · phitter.io

Open source

The Python kernel is open source under the MIT licence.Read 9 Oct 2026 · phitter.io

Privacy detail

The site says it uses analytics and external services described in its privacy policy.Read 9 Oct 2026 · phitter.io

Python library

Phitter is also available as a Python package for notebooks and pipelines.Read 9 Oct 2026 · phitter.io

Regression models

NoRead 23 Sep 2026 · phitter.io

Research record

Phitter has a peer-reviewed software paper in the Journal of Open Source Software.Read 9 Oct 2026 · phitter.io

Scripting support

YesRead 23 Sep 2026 · phitter.io

Statistical tests

YesRead 23 Sep 2026 · phitter.io

Visualizations

Results include fitted density or mass, cumulative distribution and Q–Q plots.Read 9 Oct 2026 · phitter.io

Plans and prices

Every Phitter plan and price →

Where Specifiction places it

• Statistical Analysis Software#49 of 1067.8