A free app for Android, by Syamu Vellanad.

Tamil Dictionary Ultimate is an offline dictionary for Android devices. You can access over 12.7 lakh+ definitions from more than 150 Indian languages. You can also search from multiple sources such as English, Tamil, Marathi, Malayalam, Telugu, Kannada, Bengali, Gujarati, Hindi, Punjabi, Malayalam, Telugu, Odia, and Marathi. The app is designed to be used by both professionals and students.

The dictionary supports voice search. You can search by using your voice and it will search in both Tamil and English. The app is designed to be used in a fast and efficient manner. You can access the dictionary from anywhere in the world.