This is hands down, the best time calc out there! Thats saying a lot since there are TONS of them. Its interface is easy to work with - you almost cant screw this up! And there are SO many uses for this. Heres a couple examples: • Gaming: The Sims Freeplay. You want to know EXACTLY when one of those painfully long tasks will be completed. Simple. Press the "now" button and + the number of hours & hit =. Thats it! • Movie Time Convertor: You know how they insist on printing the run time of a movie in minutes only? Like, 168mins. Simply enter in 168 minutes and press the = sign twice. BINGO! 2:48:00. I could go on and on. What else can I say? I LOVE THIS APP!!! Buy it!!! No, seriously...I know where you live.