Site information
Meimay is a free chemistry learning and drawing site built around local browser storage, with no account requirement and no access analytics.
Updated July 30, 2026Data and privacy
Answers, chemical names, structures, and learning history are not sent to an analytics service.
There is no automatic cross-device synchronization or cloud account.
Completed drawings are exported as PNG.
Learning content and quality
Scoring logic and content corrections can be traced.
Logic, core flows, visual layout, and PWA caching are verified.
It does not replace laboratory safety, medical or legal judgment, or final publication review.