Curvy

Curvy works in After Effects 2022 and newer, inside the Motion Dock. It eases keys on any property whose keyframes can ease, like Position, Scale, Rotation, Opacity, effect controls and paths. It leaves locked layers and hold keys alone.

Yes. Free forever, with no trial, no watermark and no locked features. Select some keys and drag.

Install the Motion Dock, our free panel for every Motion Fun tool, then add Curvy to your dock from Edit Layout. After the first install, restart After Effects and find the Motion Dock under Window → Extensions.

Yes. Select the keys whose ease you like and press Copy, and their curve goes into Curvy's card. Then select any other keys, on any layer or property, and press Apply. Curvy works out the speed for each property, so the ease keeps its shape on Position, Scale or an effect. Shift-click Apply for the in side only, Option-click for the out side only, or Cmd-click to apply it flipped (Alt and Ctrl on Windows).

Yes. Save the curve you are holding to your favorites and it is there in every project. The library also has Linear and the classic Sine, Quad, Cubic, Quart, Quint, Expo, Circ and Back eases, each In, Out and In-Out. Export your favorites to a file to share them or move them to another computer, and import them back.

Position moves along its motion path, and After Effects can't push a path past its end, so an overshooting curve lands held inside the keys. Curvy tells you when that happens and offers Separate, which splits Position into X and Y and applies the curve again, all in one undo.