Esoterica

Small, free web apps in the mystic arts. Each one runs in your browser with no sign-up: draw the figures, play the tones, follow the sky, or read the cards.

Sacred geometry

The shapes found in nature and in temples: the Flower of Life, the Platonic and Archimedean solids, Kepler's cosmic cup of nested solids, the golden angle of the sunflower, the spirals of the nautilus and the galaxy, and the Sri Yantra.

Platonic Solids

Turn the five Platonic solids in 3D, see their duals and measurements, and print nets to fold your own.

Archimedean Solids

All thirteen Archimedean solids in 3D, with their Catalan duals, measurements and printable nets.

Kepler's Cosmic Cup

The five Platonic solids nested between the spheres of the six planets, as Kepler saw it in 1596, and how close he came.

Sunflower Golden Angle

Grow a sunflower from the golden angle, nudge it a tenth of a degree to see spokes appear, and count its Fibonacci spirals.

Spiral Gallery

The logarithmic, Archimedean, Fermat and Fibonacci spirals side by side, with the nautilus, the ram's horn and the galaxy.

Sacred Geometry

Draw and export the Vesica Piscis, Seed of Life, Flower of Life, Metatron's Cube and the Golden Spiral.

Sri Yantra

The nine interlocking triangles with lotus petals and gates, drawn to scale, colorable and exportable as SVG or PNG.

Sacred art

Designs made as a practice, by hand and often in a single line: mandalas, labyrinths, the Zen circle and the Zen garden, the kolams of South India, Celtic knotwork, Islamic star patterns, Gothic rose windows, and the kumiko lattices and sashiko stitches of Japan.

Mandala Maker

Draw with mirrored symmetry, choose from 2 to 24 folds, and save your mandala as a PNG or an SVG.

Islamic Patterns

Stars, rosettes and interlaced girih grown from tilings of polygons with Hankin's method, saved as SVG or PNG.

Celtic Knot Maker

Paint breaks on a grid and the knotwork weaves itself, over and under, with George Bain's method.

Kolam Maker

South Indian dot-grid designs where a single unbroken line loops around every dot. Watch it being drawn, in one stroke.

Rose Window Maker

Build Gothic tracery with compass and straightedge, step by step, like a medieval mason.

Kumiko Maker

The Japanese wooden lattice: asanoha, goma and kikkō patterns, assembled piece by piece in a square, hexagonal or round frame.

Sashiko Maker

Japanese running-stitch patterns, white thread on indigo: seigaiha waves, asanoha, shippō and more, stitched out line by line.

Enso Maker

Paint the Zen circle in one breath: a generative ensō with dry-brush streaks on rice paper, or draw your own.

Zen Garden

A Zen rock garden: rake the sand, place and move the stones, and let the ripples form around them.

Labyrinth Maker

Draw the Cretan labyrinth, a Troy Town or your own design from its path sequence, then walk it to the center.

Sky and calendars

Follow the cycles of the sky: the phases of the Moon, the retrogrades of Mercury, the eclipses and the meteor showers to come.

Eclipse Calendar

When is the next eclipse? Every solar and lunar eclipse from 1900 to 2100, where it is seen and what it looks like from your city.

Moon Phase Calendar

Today's moon and month and year calendars of every phase, with moon signs, full moon names, supermoons, lunar eclipses and what each phase means.

Meteor Shower Calendar

When are the Perseids? Every meteor shower's peak, the Moon's interference, the best time and where to look from your city.

Mercury Retrograde

Is Mercury retrograde today? The stations and shadows, the loop it draws in the sky, and a calendar of every planet's retrogrades.

Sound and energy

Tones and vibrations, and the patterns they make: healing frequencies, binaural beats, singing bowls of metal and of quartz, sand dancing on a vibrating plate, the harmonies of the planets and the pendulum drawings of the harmonograph.

Cymatics

Play a frequency and watch the sand settle into its Chladni figure, on a plate or a drumhead.

Music of the Spheres

A live orrery where each planet sings as it orbits, rising and falling with its speed, as Kepler heard it.

Harmonograph Maker

Musical intervals drawn by pendulums: harmonograph spirals and Lissajous curves for the octave.

Tibetan Singing Bowls

Strike or rub seven virtual singing bowls, synthesized live with their beating overtones, and run a sound bath timer.

Crystal Singing Bowls

Seven quartz bowls tuned to the chakras or the Solfeggio scale, with a guided chakra journey and the water shivering in the bowl.

Binaural Beats

Delta, theta, alpha, beta and gamma brainwave beats for sleep, meditation and focus, with an optional bed of pink or brown noise.

Healing Frequencies

Digital tuning forks: Solfeggio, chakras, organs, the Cosmic Octave and more, plus a chart of the whole frequency scale.

Divination

Six divination traditions, carefully reconstructed: the tarot, the hexagrams of the I Ching, the runes of the Elder Futhark, the syllables of Tibetan Mo and the sixteen figures of medieval geomancy, with numerology.