Calculate confidence intervals for survey data. Input sample size and percentage to determine accuracy range. Compare two percentages to assess statistical significance. Determine required sample size for desired accuracy.
Calculate tips with preset percentages (5%, 10%, 15%, 18%, 20%) and a custom slider for any amount. Round totals to the nearest dollar. Split bills among 1-99 people. Adjust splits in real time as inputs change.
Create and manage job estimates with card-based interface and cover photos. Add and organize client information. Sync estimates, photos, and data across devices using iCloud. Edit and refine estimates on iPhone or iPad.
Calculate the required amount of bleach and water for a to achieve a specific Sodium Hypochlorite concentration. Input total volume and desired percentage. Display measurements in liters and milliliters. Save and share mixing instructions.