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.
Calendar tool displays Gregorian and lunar calendars side by side. Shows public holidays and adjusted workdays. Identifies holidays and traditional festivals automatically. Displays solar terms accurately. Converts Gregorian to lunar dates.
Create professional证件照 with one-click photo capture and background removal. Adjust beauty level and choose from multiple background colors. Customize dimensions and resolution for specific requirements.
