What has changed

§1Releases

0.24.0 · 18 Oct 2026

More definitions sourced from the papers (344 open values, down from 467), a plain account of what was changed in the data and what was not (Methods §4), a panel in Check your run that shows which answer would make the most extra curves fair to compare, a fix to the downloadable files (the redshift of 91 parametric curves was wrong in the CSV and JSON), and Safari and Firefox support.

0.23.0 · 16 Oct 2026

The dials page: turn the four feedback dials of two simulated universes and read in a sentence what agrees and what refuses; match one to the other and see what moved. Check your own run opens from a link, has an example and states the range of offsets against comparable curves. A new study asks whether the two universes can agree on every galaxy property at once (they cannot), with the gaps in dex and fractions. New front page, glossary and FAQ.

0.22.0 · 14 Oct 2026

A study of what retuning can change in the cosmic star formation history: published simulations show no detectable growing disagreement at early times, and retuning four feedback dials brings the two codes within the scatter between seeds. New data: IllustrisTNG model variants and FLAMINGO, and the star formation history of 2,054 CAMELS simulations.

0.21.0 · 14 Oct 2026

A pre-specified test of whether matching definitions (IMF, scatter, aperture) closes the gap between simulated stellar mass functions: not detected, and the test could not have seen an effect of the measured size. New within-run aperture curves for EAGLE and COLIBRE.

0.20.0 · 13 Oct 2026

NewHorizon stellar mass functions at four epochs; new curves for COLIBRE, FIREbox, FIRE-2 and NIHAO; an automatic screen that compares every curve with the median of the others.