Sand Pendulum

A weighted pendulum slowly carves patterns into sand. Just watch. Finished patterns are kept in your book. A quiet place for sleepless nights.

You don't have to try to fall asleep.

Sand Pendulum is an app for simply watching a weighted pendulum slowly carve patterns into sand. The same slow swing and precession as a real sand pendulum gradually draws roses, spirals and stars.

■ Just watch No interaction needed. The weight swings quietly across a field of sand that fills the screen. Each pattern takes about six minutes to finish. By then, your eyes may already feel heavy.

■ When it is finished, seen from above As a pattern completes, the camera rises slowly until you can see the whole thing from directly overhead. Move on to the next one whenever you choose. Falling asleep before then is perfectly fine.

■ 148 patterns to collect One hundred sand patterns, twelve "circling patterns" traced by a ball rolling across the sand, and seasonal ones. Only the patterns you carve to the end are kept in your book, each with its name. Mark the ones you love. Finished patterns can be saved as an image, or as a timelapse video of the carving.

■ Another kind of night: Light Mandala Three pens of light draw geometry in the dark. 108 patterns in all — a different sort of quiet from the sand.

■ Make your own Tune the swing yourself and create a pattern that exists nowhere else. Name it, and keep it in your book.

■ Sounds that dissolve into the night Three low music boxes made for sleep, rolling waves, night rain, a soft breeze, and sleepy noise. All generated on your device, so the loops have no seams. The faint ASMR of the weight carving sand shifts with its speed. And if you would rather listen to your own music, everything can be muted.

■ Built for sleep

• No ads
• No account. All data stays on your device. The app never connects to the network
• The screen and sound dim gently as the carving goes on, drawing you toward sleep
• A sleep timer, and a quiet bedtime reminder
• Pick up last night's pattern where you left it
• Choose your sand, dish and weight (white sand, black sand, star sand and more)

Made by CoconeRu., a head spa salon in Japan, as a small quiet place for sleepless nights.