TailMark: Plane Spotting Log

TailMark is a plane-spotting logbook that works entirely offline. Type any US tail number and TailMark instantly tells you the manufacturer, model, category, and engine type — no signal required, no waiting on a network lookup. That's because TailMark bundles a real database of over 300,000 US-registered aircraft (built from the FAA's own public registry) directly inside the app. How it works: 1. Spot an aircraft and log its tail number. TailMark auto-fills the aircraft's details from the bundled database — or note manually if it's not in there yet. 2. Tag the airport, add a photo and notes if you want. 3. Build your life list: every unique aircraft you've ever logged, grouped by type and manufacturer, with how many times you've seen each one. 4. Keep your spotting streak alive day to day, and watch your stats grow — total sightings, unique types, unique manufacturers. See where your…