Explore a fold as a leaf's changing direction toward a virtual sun.
SunLeaf is a quiet model for experimenting with light and shape. Choose three leaf forms, move the virtual sun and try six experiments. Keep up to 24 comparisons in a local notebook, then return to see what changed.
The leaves are mathematical models, not measurements of real light or predictions of plant growth. There are no timed challenges.
On a non-folding iPhone, use the on-screen leaf and sun controls. This version uses a virtual folded model; live physical hinge control is unavailable. A grown-up can help with settings and erase the notebook.
No ads, in-app purchases or external transmission of app data.