K4 Tools vs BigFont Display

K4 Tools helps flight crews complete inflight fuel and time checks quickly and accurately — with calculators built around your current flight plan. Highlights: • Magic Scanner: Use the iPhone camera on support models to scan the FMS Position Report and auto-fill required fields. • Duty/Rest Calculator: See Max Duty End, Latest Legal Takeoff, and required rest based on crew size, sequence, and consent — with live remaining duty. • Crew Rest: Share break schedules and keep track visually on the crew break Timeline. • Fuel Checks: Verify pre‑flight fuel upload accuracy across multiple receipts. • Pre-flight weather verification via calculated ETA's at Departure, Destination, Alternate, and ETP Airports. • iPhone + iPad: Optimized for both portrait and landscape use on iPad — including mounted flight-deck configurations.. Limits and warnings appear when operational or contractual thresholds are approached or likely to be exceeded, so you can take corrective action early. Planned updates: - B777 flight plan support for both standard and ETOPS plans. - Crew Rest Alarms automatically set for selected break period. - Custom Crew Rest break lengths

BigFont Display turns your iPhone or iPad into a clear, full-screen message display. Type what you want to say. BigFont makes it large, bright, and easy to read from across a room, in a noisy place, through a window, or when speaking out loud is not practical. Use it for quick notes, public spaces, classrooms, travel, accessibility, events, pickup signs, quiet rooms, or any moment when your screen needs to say something clearly. Features: • Huge full-screen messages • Simple tap controls • Double-tap to edit • Pages for longer messages • Custom fonts, colors, and alignment • Keep screen awake while displaying • Shake to flash for attention • Lock controls before handing over your device • Works on iPhone and iPad • Optional Translation unlock for multi-language display How to use BigFont Display: 1. Open the app. 2. Double-tap to type your message. 3. Tap once to show controls. 4. Adjust size, color, font, pages, or lock. 5. Hold up your screen. Translation Mode is available as a one-time in-app purchase.