Time Sums: Time Calculator

An easy to use tool for quickly adding or subtracting times of different units. Ideal for quickly adding up total times for timesheets and log books.

Features:
- Add or subtract an unlimited number of days, hours, minutes and seconds
- Total automatically calculated as you type
- Easy change previously entered times or delete an entire row
- Simply tap the plus to toggle between addition and subtraction
- View the result in a variety of formats
- Decimal times are supported for each unit
- Copy or export your result to other apps