Записная книжка is a free Android app developed by Rizhov Nick that serves as a simple notebook for users who want to keep notes and important information handy. The app is designed with simplicity in mind, making it easy to use for anyone.

The app has a minimalist interface that allows users to create notes and save them with ease. Users can create new notes, edit existing ones, and delete them as well. There is also a search function that lets users find any note quickly. The app does not require any login or registration, which means users can start using it right away without any hassle.

Overall, Записная книжка is an excellent app for those who need a quick and easy way to take notes and keep important information handy. While it may lack some advanced features, it is perfect for anyone who wants a simple and straightforward notebook app.