Time calculator allows you to add and subtract hours but also to divide and multiply hours by a given number. You can operate with hours, minutes and seconds.
Once a computation is completed by pressing "Equals" button, you will find the record in history. Also the history can be cleared at any time.
The app has two themes: Blue and Dark. Choose the one that best suits you.
You can use the button "Now" to introduce the current time in the calculator.
Any feedback is welcomed.