SigiCalc vs ChemyLab

SigiCalc is a fast, clean RPN calculator that draws your functions. Enter a calculation the RPN way – numbers first, then the operation – and as soon as your expression contains X, tap Graph to see it plotted. No equals key, no parentheses, no fuss. REAL RPN • Classic stack-based entry with Enter, Undo and All Clear • Keys light up only when the stack has enough values – you can't make an invalid entry • The display shows your result, the whole expression in normal notation and the raw stack LIVE FUNCTION GRAPHS • Use X as a variable and plot the result instantly • Pinch to zoom, drag to pan, tap to zoom in, double-tap to reset • Touch and hold to read the exact x / y value on the curve • Discontinuities like tan(x) or 1/x are drawn correctly – no misleading vertical lines SCIENTIFIC FUNCTIONS sin, cos, tan and their inverses, natural log, square, square root, reciprocal, sign change and π DESIGNED FOR TODAY'S DEVICES • Light and Dark Mode, portrait and landscape • iPad: calculator and live graph side by side • Smooth animations and haptic feedback PRIVATE BY DESIGN SigiCalc works entirely on your device. No account, no network, no ads, no tracking. Example: X ↲ X sin × plots x · sin(x). What changed versus your text and why: - Leads with a benefit, not a category: "draws your functions" is the hook; "simple and practical graphical" told the reader nothing they'd search for. - Explains RPN in one sentence for people who don't know it, since that's the biggest reason someone bounces. - Bulleted feature blocks — App Store descriptions are skimmed, and the capitalised headings scan well in the store's plain-text rendering. - Adds Dark Mode / iPad / privacy, all of which are new in 3.0 and are things reviewers and users look for. - Fixed "polish" → "Polish" and "equation" → "expression" (you plot expressions, not equations).

Step into the ultimate interactive chemistry playground! Chemy: The Visual Laboratory bridges the gap between abstract chemical symbols and tangible physical properties. Designed to build deep visual intuition, Chemy provides a state-of-the-art interactive periodic laboratory for students, educators, and science enthusiasts. Whether you want to visualize atomic structure, simulate thermodynamic states of matter, hear the sounds of light spectra, or build molecules in an interactive sandbox, Chemy brings the microscopic universe to life with premium visuals and responsive simulation mechanics. *** CORE INTERACTIVE MODULES & FEATURES *** INTERACTIVE PERIODIC TABLE (ATLAS) Explore the elements through an immersive, responsive catalog: • Dynamic Grid Layouts: Switch seamlessly between the Classic Periodic Table and the mathematically curved Curled-Ribbon Periodic Grid. • 3D Voxel Blocks: Toggle 3D voxel representations of elements, rendered with custom isometric projections. • Interactive Highlights: Color-code and filter the grid by Cosmic Nucleosynthesis Origin (Big Bang, massive stars, supernovae) or Chemical Families (Noble Gases, Alkali Metals, Halogens, etc.). • Deep Element Inspector: Dive into any element to inspect its scientific details: Bohr Card: Interactive Bohr model visualizer showing concentric electron shells and atomic properties. Electron Apartments: Maps complex quantum orbital configurations (s, p, d, f) to an intuitive apartment room layout filling dynamically based on Hund's Rule and the Aufbau principle. Quantum Forces: Visualize atomic grip forces (ionization energy and electronegativity) with dynamic vector lines. Spectral Signatures: View high-fidelity absorption and emission spectra. Auditory Spectra Synth: Synthesizes emission wavelengths into audible acoustic sine-wave frequencies. Listen to the unique sound of each element! REACTIONS CENTER & SANDBOX Experiment, balance, and build in an open-ended molecular lab: • Reaction Sandbox: A drag-and-drop chamber where atoms float freely. Collide elements to form covalent or ionic binary compounds (like H2O or NaCl) based on electronegativity delta, valency hook counts, and temperature. • Equation Balancer: Input chemical equations using a specialized Periodic Element Keyboard to calculate and balance stoichiometric coefficients instantly. • Molecular Structure Generator: Procedurally generate and inspect molecular stick-and-ball covalent bond structural diagrams. CHAMBER STATE SIMULATOR (SOLID, LIQUID, GAS) Understand how temperature affects atomic motion: • Global Thermal Controller: Simulate temperatures from absolute zero (0 K) up to 6000 K (the surface of the Sun) with key milestones like boiling and melting points. • Atomic Motion Physics Canvas: Watch a dynamic particle engine simulate atomic behavior. See solids locked in a crystalline lattice, cohesive liquids sliding at the base, and high-velocity gases colliding elastically. DENSITY COMPARER (MASS & VOLUME) Build physical intuition for how elements differ in weight and volume: • Isometric 3D Cube Comparison: Compare the density of two pure elements (e.g., 1 kg of Lead vs. 1 kg of Lithium) in dynamically scaling 3D cubes. • Buoyancy & Balance Simulator: Simulate water displacement and balance scales to visualize weight-to-volume relationships. MEMORIZATION TRAINER & PROGRESS • Gamified Quiz Loops: Master symbols, names, atomic numbers, and families with speed and accuracy feedback loops. • Element Sticker Book: Unlock elements in the sandbox to add glowing, starred stickers to your catalog. • Trophy Badges: Earn beautiful rewards (e.g., "Water Creator", "Metal Monarch").