BD Land Area Calculator is a free Android application developed by Rafi Systems Pty Ltd in the Education & Reference category. It is a useful tool for measuring land area in square feet, square meter, Decimal, and Katha using Heron's formula. This app can be used in any country, including Australia, NZ, Canada, USA, Bangladesh, India, and others. Input parameters must be supplied in feet only.

The app has several features that make it stand out. First, it provides accurate area calculations up to three decimal points. Second, it can calculate both rectangular and non-rectangular land areas. Third, it calculates the area of non-rectangular land areas using the triangular method with Heron's formula. Fourth, it provides a list of units used in Bangladesh and India. Fifth, it includes unit conversions, such as decimal, shotok, bigha, biswa, biswansi, guntha, kanal, kani, katha, and more. Sixth, it is zoomable, and seventh, it has input validation. Moreover, it works offline, requiring no internet connection after installation.

If you have any suggestions or feedback regarding this app, the developers welcome your input on how to improve it and what new features they can include in the next version.