Every calculations performed with MathX, MathX iMessage app, and the Calculator widget are automatically saved to history.

3D Touch. To open a History from the Home screen, press MathX, then choose the History quick action. See Quick Actions.

Delete an operation. Tap .

Delete an operation with a swipe. In the operations list, swipe left on the operation, then tap Delete.

Share an operation. Tap .

Preview an operation

3D Touch. Press an operation to peek at it, then swipe up to use quick actions. Press a little deeper to pop open the operation.

Edit an operation

Editing operations allows you to quickly create a new operation with pre-filled-in values. To avoid duplicate, the new operation will only be saved to the history if changes have been made.

Edit an operation with a swipe. In the operations list, swipe left on the operation, then tap Edit.

Filter operations

Tap to set up the filter. You can filter by operations and by sources.

Sources are:

application
extensions – Calculator Widget and iMessage app