- PassportPower: batch tracking for families and groups, $9.99 one-time per destination.
- Google Drive: shared folders so every traveler sees the same documents.
- Google Sheets: a simple tracker with columns for traveler, document, status, and reference number.
- Adobe Scan: free scanning that produces clean PDFs.
- WhatsApp: the unofficial coordination layer for every group trip ever.
Sources: U.S. State Department, IATA Travel Centre
Android's edge is sharing. A shared Drive folder plus a shared sheet means nobody asks "did you send the passport scan" twice. Set the sheet up once per trip: rows for travelers, columns for each document, and a status column with three values, missing, submitted, approved. Review it weekly until everything says approved.