Kalkulator ELIXIR is a free Android application developed by Michał Jakubowski. It falls under the category of Business & Productivity and specifically the subcategory of Finance. The app allows you to predict the approximate time it will take for your transfer to reach its destination by entering the time of the transfer and the sender and recipient banks. The algorithm used in the application takes into account the session hours of ELIXIR in both banks and the National Clearing House. The app attempts to provide the latest possible time at which the transfer should reach its destination. As a result, it is possible that the money may appear in the recipient's account earlier than predicted.

The program offers several features, such as the ability to check the expected time of arrival of the transfer in the ELIXIR system to the recipient, a check to see if the transfer in the BlueCash system will arrive immediately to the recipient, the ability to add banks to favorites, which will place them at the top of the list, and an interface that utilizes Material Design elements.

The application uses Crashlytics to automatically send anonymous reports in the event of a crash.