MindMath Express Trainer is a Firefox extension that presents quick arithmetic challenges in a browser pop-up. It is designed for individuals who want to practice and improve mental math speed without leaving their browser.
MindMath Express Trainer is a Brain training & logic project. It focuses on improving mental math speed through short arithmetic practice sessions. It is built as a consumer product for people practicing mental arithmetic. MindMath Express Trainer costs nothing to use. It ships for the web and embeddable surfaces.
Elizabeth Clarke builds and maintains MindMath Express Trainer, and it first shipped in 2026. Key capabilities include arithmetic challenges, browser pop-up, and mental math practice. The interface is available in 32 languages, including Czech, German, and Greek.
Summary written by a language model from the project’s public pages.
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