Review cards using spaced repetition based on the Ebbinghaus forgetting curve. Set custom review schedules and pause plans for specific goals. Highlight text, hide key terms, and create math formulas in cards. Organize with folders, tags, and colors.
by 玉栋 侯★ 4.6101 ratingsProductivityFreeData updated 2026-09-20
Perform complex calculations with arbitrary precision. Input equations using a visual interface. Solve large problems without external tools. Display results clearly on small screens. Save and review calculation history.
Test network download and upload speeds with a single tap. View carrier, signal strength, and historical speed data. Access network diagnostics, IP checks, and Ping tests to identify issues.