Best packing list app for small teams

There are roughly 40-60 packing list apps in the broad travel category, but fewer than 10 are purpose-built for team coordination. The common failure is simple: most apps assume you're a solo packer optimizing for yourself, not someone syncing with 3-8 teammates who need visibility, task assignment, and real-time updates. Teams currently hack together solutions using shared Google Sheets, Notion templates, or clunky task managers that weren't designed for packing workflows. The actual gap is in the intersection of collaborative tools (like Asana) and domain-specific packing logic (weight limits, category suggestions, duplicate detection across team members). A vibecoder entering this space should focus on one micro-niche first—say, outdoor adventure teams or corporate team retreats—rather than chasing every packing scenario. The killer feature isn't the list itself; it's the ability to see what teammate Sarah already packed so you don't both bring rain jackets, plus simple role assignment (who buys group snacks, who manages shared gear) that turns a packing list into a pre-trip coordination hub.