JA999A vs TC Calculator

JA999A is an aircraft spotting log app designed for aviation enthusiasts. Easily save photos of aircraft you’ve spotted and organize them by registration number, aircraft type, and airline. The app automatically generates statistics based on your records, helping you visualize your spotting history in a simple and intuitive way. Key Features: • Save aircraft spotting records with photos, dates, and airports • Automatically identify aircraft type and airline from registration numbers • View statistics by airline and aircraft model • Clean and easy-to-use interface Turn your aircraft spotting experiences into meaningful records and insights.

TC Calculator is a fast, no-nonsense timecode calculator built for video and film professionals on set and in post. Add and subtract timecodes in a single tap and read the result instantly, with live conversions to frames, seconds, and feet+frames. FRAME RATES Work in any of nine frame rates: 23.976, 24, 25, 29.97, 30, 48, 50, 59.94, and 60 fps. DROP-FRAME DONE RIGHT Correct drop-frame (DF) and non-drop (NDF) math, including the proper ";" and ":" separators. 29.97 and 59.94 drop-frame are handled exactly, with 24-hour wrap-around. INSTANT CONVERSIONS Every result shows total frames, real-time seconds, and feet+frames (35mm, 16 frames/foot) at a glance. MADE FOR THE JOB - Clean, dark interface that's easy to read on set - A and B operands with quick clear buttons - Calculation history that remembers your confirmed results - Works fully offline — no sign-in, no setup PRIVATE BY DESIGN No account, no servers, no tracking, no ads. The app collects nothing; everything stays on your device. TC Calculator is a reference tool. Results are calculated from the values you enter — for delivery-critical work, always verify against your production's official timecode references.