Write calculations directly on the screen for real-time results. Edit equations with gestures or add elements anywhere. Drag and drop previous results for reuse. Supports interactive ink for natural handwriting input.
Track calculations with a step-by-step history. Perform basic arithmetic operations. Save and review previous steps. Calculate totals for budgets or shopping lists. Edit or clear individual steps. Export results as text.
Read from any website without content restrictions. Bookmark and share articles easily. Organize all newspapers in one place for quick access. Swipe left or right to navigate with one hand. View articles in a clean, structured layout.
Calculate dimensions by converting circular to rectangular equivalents. Determine ventilation parameters including diameter, airspeed, airflow, and dynamic pressure. Compute pressure drop for straight sections and systems.
Perform calculations with a standard featuring extra-large buttons and functions like delete, x², √, and %. Use a scientific with 30 advanced functions. Convert units, calculate loans, and determine tips.
Convert units across 17 categories with 398 options. Switch between currencies using daily updated exchange rates. Access converter on Apple Watch for quick and conversions.
Volume to energy converter calculates gas volume to energy with temperature and pressure adjustments. Professional pipe sizing uses BS 6891:2015 standards for accurate sizing. Includes 9+ calculators for gas engineering tasks.
Browse web pages quickly with a fast-loading engine and optimized video playback. Block ads and use incognito mode for privacy. Access favorite websites during workouts without switching apps.
Calculate volume for slabs, footings, columns, walls, and stairs in cubic yards, feet, or meters. Estimate needed, determine weight and bag requirements. Calculate rebar spacing and truckloads.
Calculate hydraulic parameters such as capillary rise, viscosity, and hydrostatic pressure. Convert between metric and imperial units. Determine velocity head, specific energy head, and total energy. Assess head loss using the Bernoulli equation.
Offers a standard, scientific, and fractions with over 30 scientific operations. Users can add notes to calculation history and share entries. It supports portrait and landscape modes on iPhone and iPad, and split-screen functionality.