Learn intervals, scales, chords, and cadences through audio playback. Practice recognition with melodic or harmonic patterns. Set personal goals and track progress over time. Receive instant feedback on accuracy.
Track missions with progress updates and completion status. View mission details and rewards. Manage party members by starting or stopping queues, accepting invitations, and customizing game settings.
Access the full offline with detailed information on each element including symbol, name, atomic number, mass, electronegativity, electron configuration, state at STP, atomic radius, and melting/boiling points.
Analyze 2D truss structures by selecting from 18 standard templates or creating custom trusses with node and element generation. Choose units for calculations. Solve for forces and reactions. Export results and diagrams.
Play -based games using four numbers to make 24. Tap or slide numbers to add, subtract, multiply, or divide. Solve puzzles with at least one valid solution. Challenge Facebook friends and global opponents in real-time matches.
Save and run custom JavaScript and CSS code on websites. Manipulate pages, block ads, inject styles, and automate tasks. No user tracking. Open source.
Play Sudoku by filling a 9x9 grid with numbers 1-9. Choose difficulty levels for puzzles. Complete rows, columns, and 3x3 boxes without repeating numbers. Track progress and solve challenges to improve brain skills.