Questions about loading a barrel, grit shelf math, or anything else in the app — send a note below and we'll get back to you.
No. The app is fully offline — every barrel, find, and batch you log is saved only on your device.
Stones of very different Mohs hardness wear at different rates in the same barrel. The app flags a load when the spread is wide enough to risk flat spots or a poor polish on the softer stones.
Open the barrel from the Barrels tab and use the stage screen — a running batch can be edited there until you move it up a rung.
Deleted barrels and finds can't be restored, since nothing is stored outside your device. Use the Finished jar gallery to look back at completed batches before removing anything.