Last updated: July 2025
Periodic Bubbles has no accounts, no sign-ups and collects no personal information. Your quiz scores and preferences are stored only on your own device.
We use your browser's localStorage to remember your preferences (sound on/off, colour key open/closed) and your quiz scores. This data never leaves your device and is deleted if you clear your browser data. A service worker caches the app so it works offline.
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Element photographs are loaded from images-of-elements.com and Wikipedia. 3D atom models are embedded from Sketchfab, and fonts and icons are loaded from Google Fonts and jsDelivr. These services may log standard technical information (such as IP address) when your browser requests their content, governed by their own privacy policies.
Periodic Bubbles is a general-audience educational site. We do not knowingly collect personal information from anyone, including children.
Questions? Email hello@periodicbubbles.com.