LectureRecordings is an Android app for audio recording, mainly while taking handwritten notes using LectureNotes. It is designed while having a user at university (or at school) in mind, for instance a lecturer who is using it for recording her/his lecture while teaching using LectureNotes (by writing on the device and projecting the screen content for the audience) or a student who is using it for recording the lecture's audio while taking handwritten notes during a lecture.

NOTE: Even though this app can be used on its own, it is mainly intended to serve as an extension for LectureNotes and is best used in conjunction with it. If you wish to record audio while taking handwritten notes, please launch LectureNotes and start audio recording there, the resulting audio files will be stored within the corresponding notebook directory.

Major features
• Requires only minimal permissions and no internet connection (we do respect your privacy!)
• Allows audio signals to be recorded and replayed
• Allows lectures (and other audio signals) to be recorded in a synchronized fashion while taking handwritten notes using LectureNotes (requires LectureNotes to be installed)
• Allows lectures (or other recorded audio signals) to be replayed in a synchronized fashion together with the handwritten notes taken using LectureNotes (requires LectureNotes to be installed)

Possible issue: For good audio quality, it is advisable to use an external microphone, in particular when taking notes with a stylus with a hard tip in parallel (the noise that the tip causes on the device display and human voices are in the same frequency range and the former cannot be filtered away reliably).
WHAT'S NEW

• several minor improvements
• quick recording shortcut added
• recordings board search added
• settings made searchable

https://play.google.com/store/apps/details?id=com.acadoid.lecturerecordings