STEM
PrismForge
Bend, split, and focus light through a virtual optics bench — explore lenses, prisms, mirrors, and the full electromagnetic spectrum while solving light-based engineering challenges and building devices from magnifying glasses to fiber optic cables.
▶ Play it nowBuilt for sittings of about 20 minutes on the screen. That is our design budget, not a measurement.
Meet your mentor
Every Spark & Anvil app has a friendly mentor character that demonstrates, asks, and patiently scaffolds learning. On-device AI personalizes the mentor's responses to your kid's progress — never connecting to a server, never collecting data.
Mentored by Optic
#29B6F6 PrismForge is a hands-on optics and light science lab where you experiment with lenses, mirrors, and prisms on an interactive optics bench! Drag and rotate optical elements to bend, reflect, and split light rays. Watch in real time as rays trace their paths, discover how rainbows form, and build real optical devices like telescopes and magnifying glasses. Your AI mentor Optic Owl explains the science behind everything you see.
Characters who teach
Meet the cast
PrismForge teaches optics as a family of light-behaviors — reflection, refraction, dispersion, lens action, color mixing, and the wave/photon dualities.
Mirror
Reflection (incoming ray bounces back)
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Bend
Refraction (light slows in denser media)
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Spread
Dispersion / spectrum (different wavelengths bend differently)
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Focus
Lens action (converging + diverging)
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Tint
Color mixing (additive RGB / subtractive CMY)
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Drink
Color by absorption
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Sheath
Total internal reflection
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Eclipse
Shadows / straight-line travel
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Bask
Intensity / spreading with distance
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Dapple
Scattering
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Browse all chapters → · What's distributed-narrative methodology? →
What's inside
Optics Bench
Drag optical elements from the palette onto the bench. Place lenses, mirrors, and prisms in the path of light rays. Rotate elements to change how light bends. W
Spectrum Explorer
Explore the full electromagnetic spectrum from radio waves to gamma rays. Tap on each region to learn about its wavelength, frequency, and real-world uses. Disc
Device Workshop
Build real optical devices by assembling the right elements in the right order. Start with a simple magnifying glass and work your way up to telescopes, microsc
Color Science Lab
Mix colors using additive (light) and subtractive (pigment) methods. See why red and green light combine to make yellow, but red and green paint make brown. Lea
Mentored by Optic — on-device AI, no data leaves the device.
How PrismForge handles your kid's data
- ✅ All progress, settings, and AI-generated content stays on the device
- ✅ No analytics, no tracking, no third-party SDKs
- ✅ Free — no ads, no in-app purchases
- ✅ No personal information collected from children — in line with COPPA (updated by the 2026 FTC amendments)
- ✅ No chat with strangers — play-together rooms use a short code and preset emotes, never typed messages
PrismForge runs on ForgeKit — the open-source Swift Package Manager framework that powers every Spark & Anvil app. ForgeKit ensures consistent accessibility, COPPA compliance, and design language across the portfolio, so your kid's progress and preferences feel coherent across every app they touch.
Coming to the App Store
PrismForge is in active development. Email us to hear when it ships — no marketing, no spam, just a one-shot launch announcement.
Email me at launch
