DiveMan, developed by Diveman Labs, is a free lifestyle app for Android that aims to make diving easier and safer. It offers a wide range of features, including dive time and gas consumption calculators, rock bottom calculation, and various nitrox and trimix calculators.

One of the standout features of DiveMan is its gas blender, which allows divers to create their own nitrox and trimix gases. The app also includes a weight calculator and a units converter, supporting both metric and imperial systems. DiveMan is a comprehensive dive calculator app that can be used by both beginner and experienced divers to plan their dives and ensure their safety underwater.

Overall, DiveMan is an excellent tool for divers who want to plan their dives more efficiently. The app's user-friendly interface and the range of features it offers make it a must-have for all divers.