Audionote provides instant access as notes are linked to voice recordings with customizable fonts, colors, shapes & more. Notes get automatically highlighted and scroll. We can take notes directly on PDF slides and allows folders to organize by subject with the added ease of iCloud Drive, Dropbox & more sharing options. The adjustable playback speed also comes with automatic pitch correction and sync with other devices.
https://luminantsoftware.com/apps/audionote-notepad-and-voice-recorder/