Field boundary

Tap corners in order on the hybrid map. Confirm the ring, then drag, delete, or insert a vertex.

Acres —

Search to a field, then start the boundary.

Tap each corner in order. The ring is yellow.
Confirm, or tap the first vertex, to close it. Three vertices minimum.
After confirm: drag a vertex, tap a vertex to delete it, tap an edge to insert one.
Download is allowed from 5 through 700 acres, and only if the ring does not cross itself.

Nothing is stored. The key stays in this browser.

Google hybrid