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About this app

Paint a plate with materials and watch πŸ‘€ heat spread across it in real time ⏱️.

Gilluk is a heat-flow lab for your phone πŸ“±. Paint a square plate with different materials, set a hot side and a cold side, and watch πŸ‘€ the temperature spread across it.

Pick copper, aluminium, steel, concrete 🧱, granite, glass, water gel, oak, still air or foam. Drag βœ‹ across the plate to lay the material down. Heat moves fast ⚑ through copper and slowly through foam, and you see πŸ‘€ the difference as it happens. Colour bands and contour lines show where the heat has reached.

What you can do in Gilluk:
- Paint materials onto the plate with an adjustable brush.
- Place hot sources and cold sinks, or unfix a cell again.
- Place probes on the plate and read their live temperatures.
- Follow the equilibrium percentage and the estimated time ⏱️ to steady state on the Desk.
- Load one of eight ready-made plates, such as Copper Spreader, Heat-Sink Fin, Cold Bridge and Thermal Maze.
- Save πŸ’Ύ your own plates and keep a log πŸ“ of every run.

When a plate settles, the run is logged. Open its report 🧾 to see πŸ‘€ probe temperature curves, how the temperature distribution changes over time ⏱️, and a heat budget πŸ’° that shows what flows in and what flows out.

The Materials tab lists each material with its thermal diffusivity. Open one to see πŸ‘€ its conductivity, density and specific heat, and a chart πŸ“Š of how a pulse of heat spreads through it over time ⏱️. You can also add up to three materials of your own.

Gilluk suits students, teachers, engineers and anyone curious about how heat moves through different materials.
Paint a plate with materials and watch πŸ‘€ heat spread across it in real time ⏱️
Updated on
Oct 15, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Device or other IDs
  • This app may collect these data types
    Photos and videos and Device or other IDs
  • Data isn’t encrypted
Content rating
Everyone
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App support

About the developer
twoAM GmbH
help@twoamapp.com
Bahnhof-Park 2 6340 Baar Switzerland
+44 7307 148345

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