Используйте приложение APKPure
Историческую версию O&M можно получить на Android
Этот инструмент рассчитывает (O&M) затраты на воду, санитарию и гигиену.
This tool supports you in calculating the Operation and Maintenance (O&M) costs for water, sanitation and hygiene in school activities. The app also calculates the costs for proper cleaning and disinfection in accordance to WHO recommendations. Enter your data and see how much you spend on O&M now. In addition, the app can estimate how much to improve your schools WASH services. You can see the result immediately. You can also request to have the results sent to you via email and use them for your school’s budgeting.