Pick 2–4 apps and see our editorial scores. Same plain question as the directory: does it help you cast off — or pile on another login?
Fair Boat Day stack-up (we score ourselves the same way). Not affiliate rankings, not invented partner density. Owners free forever. Safety never joked about.
High worth-it and safety confidence when charts are current — classic cast-off enabler. Burden is mainly subscription and sync hygiene, not admin sprawl. Pairs cleanly with Boat Day as the nav layer while Ownership OS stays on My boats.
Best for: Most US recreational owners who need reliable charts and depths.
Skip if: You already have an MFD with current charts and never leave familiar waters.