All-in-1-Calc is a free, powerful, and user-friendly scientific calculator developed by Speed Software. This calculator is designed with a nice UI that features large buttons, haptic feedback, and digit grouping. This calculator offers all the essential scientific functions, including unit and currency converters, constants, and hex/dec/bin/oct functions.

The free version of All-in-1 Calc is a great option for anyone who needs a reliable calculator that is easy to use. The app is ideal for students, researchers, and professionals who need to perform complex calculations on a regular basis. With its user-friendly interface and powerful features, All-in-1 Calc is an excellent choice for anyone who needs a reliable scientific calculator on their Android device.