ChemTable
Terms of use for the ChemTable periodic table web app, including optional Premium subscriptions.
ChemTable is a browser-based interactive periodic table and chemistry reference tool. The full reference is free; optional Premium unlocks the unlimited quiz, the compare tool, and element notes. It is provided as-is for education and reference.
Premium is optional. Subscriptions are billed through RevenueCat and Stripe, renew automatically, and can be cancelled anytime from the link in your receipt email; Lifetime is a one-time payment. Access is tied to this browser — keep your receipt email for recovery.
Element properties, isotope data, and calculations are provided for educational reference. Verify important values against an authoritative source before relying on them for academic, professional, or safety-critical decisions.
The app stores your favorites, notes, and preferences locally in your browser. You are responsible for exporting anything you want to keep, since clearing browser storage will remove it.
The app is provided without warranty of any kind. The authors are not liable for any loss arising from use of the app or its reference data.