"Gizilogger" is the ideal app for recording and playing back conferences or meetings.

-Recording
Any position on the recording screen can be marked.
The recording volume level can be increased. (Mic Boost:OFF/+10dB/+15dB/+20dB)
Background recording.
(*)It is necessary to have you set to start recording before recording volume level.

-File List
Files can be sorted by Recording Date or Title or Location or Color label.

-File Details
You can record Title and Location and Attendee and Memo in the file.

-Playback
Playback speed can be changed. (0.5x, Normal, 1.5x, 2.0x)
Any position on the playback screen can be marked.
Playback can be cued by tapping a Marking Label on the playback screen.
Tab the [Back 15s] button, you can rewind for 15 seconds.
Press and hold the [FF] button, you can fast-forward.

-Settings
Audio File Format:AAC/Apple Lossless/WAV
Sampling Rate:8kHz/22.05kHz/44.1kHz
Mic Boost:OFF/+10dB/+15dB/+20dB

-About feature restriction-
When the app is first installed, a feature restriction limits recording to a maximum of one file. To remove this restriction, tap [Settings] > [Add-on] > [Feature restriction removal], and purchase the add-on.