Дельта Тест - Судоводитель Li is a free Android app developed by UP Developers. It falls under the Education & Reference category and specifically under the Books subcategory. This app is designed to help captains, first mates, and watchkeeping officers prepare for the Delta Test, a comprehensive examination for ship navigators.

The app provides a convenient cheat sheet for the Delta Test, which can be accessed offline without an internet connection. It contains questions, illustrations, and correct answers, all of which are searchable by number or keywords. The app also allows users to report any errors or updates they may encounter through the feedback feature located in the upper right corner of the app or by emailing Users are also encouraged to submit their own test photos and screenshots for question verification and correction.

Overall, Дельта Тест - Судоводитель Li is a useful and practical study tool for those preparing for the Delta Test. Its offline accessibility and searchability make it a convenient resource for navigators on the go.