With this app you can use her songbook digitally.

Further information can be found at https://www.gruppe-luther.de/liederbuch/app.html.

Notes on open source software
GL songbook (based on app5) uses open source software. The following lists the components used with their main licenses. Possibly. Parts of components may be subject to other licenses as shown in the provided source code (see below). QT is used under the LGPLv3 license.

For OSS components that are under a GNU license (eg LGPL), you can request the source code of the OSS components for up to three years beyond the end of support. If the OSS components are statically linked, you can also request binary object code so that you can relink the OSS component.
Write an e-mail to software@gruppe-luther.de

Furthermore you have the possibility to download the source code of the OSS components via the website https://www.gruppe-luther.de/liederbuch/oss.html.

More information
This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit. (Http://www.openssl.org/)
This product includes cryptographic software written by Eric Young (eay@cryptsoft.com).
This product includes software written by Tim Hudson (tjh@cryptsoft.com).