Camera Light Meter vs SixtySum

Glowdex is a precise, intuitive light meter designed for photographers. Measure reflected or incident light, calculate exposure combinations, and quickly find suitable aperture and shutter speed settings for your selected ISO and stop increment. With AI Analysis, Glowdex turns measurement data into clear, practical guidance: In Reflected Light mode, AI considers both the measured values and the captured scene. In Incident Light mode, AI analyzes readings collected through the diffuser—no scene image is sent. Each report provides a concise summary and subjective optimization suggestions that account for real-world lighting, subject tone, dynamic range, and creative intent. Measurements provide a reliable baseline. Glowdex helps you interpret that baseline and adapt it to the photograph you want to create.

Time isn't decimal. Your calculator shouldn't be either. SixtySum is a calculator built for one job: adding and subtracting hours, minutes, and seconds — fast. A regular calculator works in tens. Time works in sixties. SixtySum does the base-60 math for you, so 50 minutes plus 20 minutes is 1 hour 10 minutes — not 70. Tap H, M, or S, type the numbers, and go. No colon to fumble with. No menus to dig through. No internet to wait for. WHO IT'S FOR Video editors, streamers, audio and stage crews, and anyone who works by the clock and needs the total now — not after another web search. WHAT YOU CAN DO - Add and subtract HH:MM:SS values - Switch instantly between H / M / S input - Drop in 15m / 30m / 45m with a single tap - Chain calculations without stopping - See negative results for time differences - Review your last 20 calculations at a glance QUIET BY DESIGN - One-time purchase — buy it once, keep it - No ads - No subscription - No login or account - No tracking - Works fully offline SixtySum stays out of your way and just gives you the number. Note: Calculation history is kept for the current session only and is not saved permanently.