Числа прописью is a free Android application developed by Pro-SVA that allows users to convert numbers to their written form. The app is designed to help users learn how to write numbers correctly and also provides features such as the ability to copy the text to the clipboard, listen to the pronunciation of the written number, and use different currencies and units of measurement. The app also includes a calculator that can convert the result of calculations to written form, and a feature that allows users to easily convert a list of values copied from Excel to text.

This app is useful for anyone who works with financial documents or money, students, schoolchildren, and people who work with Excel tables. It is also helpful for those who are learning the Russian language or want to learn how to write numbers in words correctly. Overall, Числа прописью is a great educational tool for anyone who wants to improve their writing skills and learn how to convert numbers to their written form accurately.