Education & Science
Learning, exams, grades and scientific references
9 free tools — no ads, no sign-up, everything runs in your browser.
3D Affine Transform Visualizer
Compose 4x4 matrices and inspect 3D affine transformations with a live cube wireframe. Multiply, invert, and apply translate, rotate, scale, and skew transforms in your browser.
Exam & Section Timer
Plan multi-section exams with total duration and seconds-per-question pacing.
Flashcards & Spaced Repetition
Review a flashcard with a transparent SuperMemo SM-2 scheduling algorithm.
GPA & Grade Calculator
Calculate credit-weighted GPA and simulate the semester average needed for a target.
Graph Shortest Path Lab
Build weighted graphs and replay Dijkstra, A*, and Bellman-Ford shortest paths step by step, entirely in your browser.
Interactive Periodic Table
Explore all 118 elements, filter them and preview phase changes by temperature.
Perlin & Simplex Terrain Generator
Generate deterministic 2D terrain with layered Perlin and Simplex noise
RF Wavelength & Dipole Antenna Calculator
Calculate radio frequency wavelength and practical dipole antenna dimensions
Wolfram 1D Cellular Automata
Explore Wolfram elementary cellular automata with interactive generation grids