The eSpiewnik application allows you to use the Evangelical Songbook published in 2002 by Augustana Publishing House. This hymnal is used in the Lutheran and Reformed Churches in Poland, as well as by two Lutheran Churches in the Czech Republic.
All 955 songs are included in the application. Only the first verse is visible to unregistered users. After creating an account, you gain access to all verses. Using the full version of the application is free for 3 months, after which an annual subscription costs PLN 29.99.