CellArc vs SixtySum

Routine Trials keeps your user-recorded battery-use observations in a local notebook and compares a changed habit with its baseline only when conditions match. HOW IT WORKS 1. Open Power Lab and choose Routine Trials. Explore the clearly labeled example to see how matching works. 2. Record completed trials with their activity, changed habit, timing, battery percentages, brightness, network and surroundings. Flag charging or interruptions. 3. Collect at least three matching pairs, inspect the median drain rates and reading-resolution limits, then share the observation report. Battery Action Plan, Scenario Studio, foreground battery history, charging sessions, trip planning, thermal tools and offline references remain available. Routine Trials is prominently linked from Power Lab. Corrupt trial files are preserved and blocked from overwrite. WHAT TO KNOW Battery readings and conditions are manually recorded. This is not battery health, capacity measurement, continuous monitoring or proof of causation. Trials last 15–240 minutes; less than two percentage points of drain is excluded. Pairing requires matching activity/network/surroundings, brightness and start levels within 5 points, and duration within 25%. Observations are never reused or counted across overlapping periods. Up to 2,000 observations are saved locally. iPhone and iPad.

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.