Prism Lab Downloads & RevenuePrism Lab · App Store
Not in any tracked top chart right now.
Updated 9 Nov 2026 · rankings refresh through the day
DeveloperKZ Labs
CategoryEducation
PriceFree
Released
Rating★ 3.3 (287)
Version2.0.0
Age rating4+
First seen by us
24 Oct 2026
24 Oct 2026Full timeline · 3 events
- 🆕Prism Lab first spotted by AppInsiderUnited States (found via developer)
- 📦Prism Lab version 2.0.0Prism Lab is back, rebuilt from scratch for today's iPhone and iPad.
• A new look: graph paper, ink and a highlighter-yellow beam.
• White light that splits into colours.
• Tap an angle to type it.
• Lights-off mode.
• Laser colour and width settings.
• 119 materials, with measured dispersion for 77 of them.… more - 🆕Prism Lab released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
3.3 ★
287 ratings
Measured
Prism Lab on the App Store
App details
App ID
301875263
Publisher
KZ Labs SAS
On the store since
Jan 2009
17 years on the store
Minimum OS
iOS 17.0+
iPhone XS and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
3
EN FR ES
Size
2 MB
Also listed in
Utilities
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
3.3 ★
287 ratings
Measured
Ratings
287
Measured
About Prism Lab
Prism Lab is an optics bench in your pocket. Put a piece of glass on the graph paper, aim the laser at it, and watch the light bend, bounce and split, with every angle measured for you.
It follows the experiments from a school ray box kit, so it works as a companion to the lab or on its own.
THE BENCH
• Nine pieces: a simple surface, 45-90-45 and 60-60-60 prisms, rectangle, square, semicircle, convex and concave lenses, and an optical fibre.
• Drag the laser and where it aims. The angles of incidence, refraction and reflection update as you move.
• Tap any angle and type the value you want. The laser swings there so you can see how it gets to it.
• One, three or five parallel beams, to find the focus of a lens.
MATERIALS
• 119 materials for the piece and for what surrounds it: glasses, liquids, gems and gases, each with its refractive index.
• The critical angle is worked out for every pair, and you can see total internal reflection happen.
COLOUR
• White light opens into a spectrum, because each colour bends by its own amount.
• 77 materials use published dispersion data. For the rest the app tells you the spread is an estimate.
• Red, yellow, green, blue and violet lasers, in the width you choose.
LIGHTS OFF
• Turn the lights off and the beams glow, as in a dark classroom.
NO STRINGS
• No account, no ads, and no data collected.
• Everything is free. If you find it useful you can buy the developers a coffee.
In English, Spanish and French, for iPhone and iPad.
It follows the experiments from a school ray box kit, so it works as a companion to the lab or on its own.
THE BENCH
• Nine pieces: a simple surface, 45-90-45 and 60-60-60 prisms, rectangle, square, semicircle, convex and concave lenses, and an optical fibre.
• Drag the laser and where it aims. The angles of incidence, refraction and reflection update as you move.
• Tap any angle and type the value you want. The laser swings there so you can see how it gets to it.
• One, three or five parallel beams, to find the focus of a lens.
MATERIALS
• 119 materials for the piece and for what surrounds it: glasses, liquids, gems and gases, each with its refractive index.
• The critical angle is worked out for every pair, and you can see total internal reflection happen.
COLOUR
• White light opens into a spectrum, because each colour bends by its own amount.
• 77 materials use published dispersion data. For the rest the app tells you the spread is an estimate.
• Red, yellow, green, blue and violet lasers, in the width you choose.
LIGHTS OFF
• Turn the lights off and the beams glow, as in a dark classroom.
NO STRINGS
• No account, no ads, and no data collected.
• Everything is free. If you find it useful you can buy the developers a coffee.
In English, Spanish and French, for iPhone and iPad.
Latest updates
2.0.0
Prism Lab is back, rebuilt from scratch for today's iPhone and iPad.
• A new look: graph paper, ink and a highlighter-yellow beam.
• White light that splits into colours.
• Tap an angle to type it.
• Lights-off mode.
• Laser colour and width settings.
• 119 materials, with measured dispersion for 77 of them.
