STEM
HeatForge
Race heat through solids, liquids, and gases — watch convection currents spiral, design insulation that defeats a blowtorch, and discover why ice cream melts faster on a hot sidewalk than in the freez
#29B6F6 HeatForge is a thermodynamics and energy transfer lab where you race heat through materials, watch particles vibrate as they warm up, engineer insulation to defeat a virtual blowtorch, and explore how the greenhouse effect warms our planet. Your AI mentor Kelvin connects the science to real-world en
What's inside
Heat Transfer Visualizer
Watch heat flow through different materials using the particle model. Particles vibrate faster (and turn red) as they warm up. Compare copper, wood, glass, and
States of Matter Lab
Add heat to a substance and watch it transform. See ice melt into water and water boil into steam at the particle level. Notice how temperature stays flat durin
Insulation Engineering
Design insulation systems to solve real-world challenges. Layer different materials (foam, wool, aerogel, air gaps) to keep ice cream frozen, protect an astrona
Greenhouse Effect Lab
Control Earth's energy budget by adjusting atmospheric CO2, albedo, and solar input. Watch energy rays arrive from the sun, get absorbed by the surface, and get
Mentored by Kelvin — on-device AI, no data leaves the device.
How HeatForge handles your kid's data
- ✅ All progress, settings, and AI-generated content stays on the device
- ✅ No analytics, no tracking, no third-party SDKs
- ✅ No ads, no in-app purchases — you pay once
- ✅ COPPA compliant under the 2026 FTC amendments
- ✅ Parental controls + session limits + content filters built in
HeatForge 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
HeatForge 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