Ten Ta To is a free, easy-to-use, and comprehensive dictionary app for iPhone and iPad. You can search for both common and unique words, with detailed information on the gender and number of each word. This app is a complete reference for all nouns in the Czech language.

It is built on a very robust and reliable database, which is continuously updated with new words. It also provides an easy-to-use interface and an integrated search function, which allows you to search for words directly from within the app.

The app is free to download, and it is designed to work on both iPhone and iPad devices.