A red lamp, a brass mirror, and a yellow crystal from the Prism Flow title screen.Prism Flow app icon

Quiet optics

Prism Flow

$2.99 once · no ads · no subscription

A quiet puzzle for the whole family. Route colored light. Mix a color when a crystal asks. No timers, no fail states, no ads. Android.

Get it on Google Play
Privacy

Android on Google Play.

Why families keep it

No rush

Nothing ticks. Nobody loses a life. A stuck board is a conversation, not a contest.

Think in space

Picture the bounce before you place the mirror. That is spatial reasoning, without a worksheet.

Buy once

The household can install it on every family device. You do not buy a seat per person.

See it on a phone

A quiet board. No timer. No ads.

For Families

Most kids games sell panic. A clock. A banner. A shop that sells the next level. Prism Flow is the other kind of evening: one board, two voices, no buzzers.

A child can sit with a corner as long as they want. An adult can suggest a turn, or open the same idea on their own phone. Buy it once. The household can install it on every family device.

There is no login, no chat, and no public profile. Google Play lists it as committed to the Play Families Policy: no ads, no data collected, no shop inside the puzzle.

A solved Prism Flow board. A red lamp turns two corners and fills a crystal.
Two beams meet on a combiner and leave as one mixed color.

Think in space

Before you drop a mirror, you picture where the light will go. Kids already do this with puzzle pieces and backpacks. Adults do it backing a car into a space. Prism Flow is that skill, on a quiet grid of light.

When a crystal asks for green, two paths have to arrive together. There is no word problem hiding under the glass. Hue is never the only cue: red is a circle, yellow is a triangle, blue is a square.

One purchase. Every device.

Put it on the kitchen tablet and the parent phones. Google Play’s family group carries the purchase. Each copy keeps its own progress. There is no Twofold cloud, and no streak that scolds you for a week at grandparents.

Questions

Is this a family game?
Yes. Buy it once and the household can install it on every family device. A child can play on a tablet while an adult plays on a phone.
Will it stress kids out?
No timer, no fail state, no lives. A beam either reaches the crystal or it does not, and you keep editing.
Is it a worksheet?
No. Spatial reasoning lives in the layout. There is nothing to read except the light.
Can kids play if they mix up color names?
Yes. Shapes mark every color from the first puzzle.
Is it a subscription?
No. $2.99 once on Google Play. Offline after install. Privacy is on the device.
Is it Android only?
Yes. Prism Flow is on Google Play for Android.

Get Prism Flow

Paid once for the household. No ads.

Get it on Google Play