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Changelog

Material changes to chemistry, availability and platform behavior.

25 August 2026 — V2 foundation and learning

  • Added bundled public catalogue fallback so free simulations remain discoverable when the API is unavailable.
  • Added a universal 2D/3D molecule viewer with orbit, zoom, pan, layers, inspection and fallback.
  • Added the curated general reaction laboratory with balancing, stoichiometry, energy, safety and review references.
  • Added anonymous progress, favourites, completion, quick tests, Continue Exploring and printable study sheets.
  • Connected public scientific-error submission, review status management and secure administration.
  • Corrected fuel-cell/electrolysis and octane-rating explanations.
  • Expanded canonical metadata, sitemap, robots rules and breadcrumbs.

24 August 2026 — Learning ecosystem

  • Added classroom, assignment, favorites, saved state, analytics and offline-pack data models.
  • Expanded the chemistry catalogue and learning routes.

Correction policy

A chemistry correction should name the affected module, old statement, new statement, reason and source. Silent scientific changes are avoided.