We just released an update for Hymn World. It adds new 13 hymns to the existing collection of hymns. It also fixes some bugs when network connection is slow or flaky. Also note that if the network is slow, it may take longer to load the lyrics; you will see the progress ring for a longer period; be patient.
Since the hymns are added by volunteer effort, it takes longer to process and add new hymns; thanks for your patience. We saw request for search by author name in a comment recently. We will keep it on cards if there are more such requests. thanks for your feedback.