No uploads. No server saves. Everything runs in your browser.
Upload a CSV, tune the build, verify immutable attributes, and export the finished roster with every step processed locally on your device. Your data is never uploaded to or saved on a server, and only the Team column gets added to your file.

Keep roster intake and the snapshot together while you prepare the roster.
CSV Snapshot
Once you add a CSV, you'll see the file name, row count, and every detected header here.