This is the best time calculator app I use but one thing is that the apps is still not optimized for the tall aspect ratio of the iPhone X. Even after a year of it being released this app still has the borders so it would be great if by the next update it could finally be optimized for the iPhone X aspect ratio. Please.

The folks that rated this with one star just didn't understand how to use the app. It's HH:MM:SS. If it shows 5:00, that's five minutes, zero seconds, not five hours, zero minutes. Five hours, zero minutes would look like 5:00:00. You can also just think of it as a time, where five o'clock would also be 5:00:00.Anyway, good job. I would gladly pay a dollar for this.

I calculate split times down to 100s of a second. Sometimes I’m working with 5 to 8 numbers at the same time. This app simplifies all work and there is no chance to commit error. I have been looking for an app like this for years! All other apps don’t have computing milliseconds feature. Thank you so much!

HOW have I lived my whole life without this app? I don't even want to know how much time I've wasted with normal calculators converting a minutes-and-seconds pace to decimal minutes, doing whatever math I need, and turning the resulting decimal back into hours, minutes, and seconds. Every runner needs this app.