Confirm before entering
Ask both teams to agree the net points for the hand. Read the values aloud, including any minus sign. Enter a negative delta for a penalty only after the group has settled its scoring rule.
Check the hand, then the running total
Our scorekeeper shows a separate row for each hand. Compare the newest row with your paper note. A correct total can still hide two opposing input errors, so verify each team separately.
Correct the latest mistake
Use Undo last hand if the most recent entry is wrong, then enter the corrected pair. For an older mistake, export a CSV, retain it as your original record, and rebuild the session if a correction is necessary. The tool deliberately avoids silent edits to earlier hands.
Keep a second copy
Export before closing a shared device. Browser storage is local to that browser and can be cleared. Private browsing may discard it when the session ends. The export is a record, not a cloud backup.