কড়ায়-গণ্ডায় (koray-gonday) is a free Android app developed by Md. Moinuddin Kadir. It falls under the category of Utilities & Tools and is aimed at assisting the simplified calculation of Ana, Kora, Gonda, Kranti, Til, etc. of the Record of Rights. The app is available to download for free from the Google Play Store.

The app is designed to be user-friendly and easy to use, with a simple interface that allows users to calculate the aforementioned measurements with ease. It is a useful tool for those who need to calculate land measurements regularly, especially in rural areas where the Record of Rights is frequently used.