VcfLookup vs Study Pomodoro Timer & Focus

A little handy App to quickly find the Volume Correction Factor (VCF) to use for Marine Fuel Oil calculations. Some references to ISO 8217 Specifications commonly used as Marine Fuel Oil Bunkers on board ships around the world.

Pomodoro timer for studying, deep work and daily tasks. Start focusing in one tap, with no daily limit. How it works • Pick a task or just tap start • Focus for 25 minutes while distractions wait • Take a short break and repeat; every fourth break is longer • In the zone? Switch to Flow mode and let the timer count up until you are done Get more done, with less stress • Finish homework and exam prep in focused, bite-sized sessions • Beat procrastination: starting is one tap, not a decision • Go deep with Flow mode, an open-ended timer for long work • Plan tasks with session estimates and see what is left Never miss the end of a session • Alerts even when the app is in the background • Live Activity, Dynamic Island and home screen widgets • Siri, Spotlight and quick actions from the app icon Shut out the noise • Rain, forest, café, library, white noise and lofi beats • Mix sounds and set each volume separately Stay motivated • Daily goal, streaks and achievements • Weekly and monthly focus statistics Clean, distraction-free design with 10 timer styles and dark mode. No account needed: your data stays on your device. Pro unlocks all timer designs, all sounds and advanced statistics. The timer itself is always free.