Simple and Extended Curves
What are they and what’s the difference?
Simple

Easing curves are a foundational tool for any motion designer, and in Kease they are called “Simple.” They consist of two Bézier handles and affect the motion between two keyframes.
If you are aiming for more complex motion, you often end up combining multiple easing curves.
Extended

“Extended” curves, on the other hand, allow you to create a curve far more complex than a standard two-handle Bézier.
Think of it as crafting a continuous, flowing motion over several keyframes and treating it as a single curve that can be applied elsewhere or saved as a preset.