Nothing uploaded
Transcription happens locally; course content never touches a server.
Study
Turn lecture recordings into searchable study notes
A two-hour lecture recording is useless if reviewing means listening to all of it. Otoha turns the audio into time-aligned sentences: skim for the point, tap to jump there, and play the rest fast.
On-device transcription. Recordings never leave your phone.
From recording to review
Transcription runs on your device, so privacy and data are non-issues.
- 01
Import recordings
Bring in audio from your phone or recorder, one playlist per course.
- 02
Generate subtitles
On-device transcription creates sentence-level subtitles. Long recordings start from where you are playing, no waiting for the whole file.
- 03
Jump and speed up
Scan the transcript like an outline, tap a sentence to jump, and take the filler at 1.5x or 2x.
Details that matter for class audio
No waiting on long files
Playhead-window transcription: open a two-hour file and the current section transcribes first.
Transcript as outline
Time-aligned sentences read like a table of contents — far faster than scrubbing.
How do I turn a lecture recording into text for review?+
Import the recording into Otoha and enable transcription. Sentence-level subtitles generate on your device, and tapping any line jumps to that moment.
Do I have to wait for a two-hour file to transcribe?+
No. Otoha transcribes in windows starting from your playback position, so the part you are reviewing is ready first.
Are recordings uploaded to the cloud?+
No. Transcription is fully on-device; files never leave your phone.
Can it tell speakers apart?+
Not currently. Subtitles are generated sentence by sentence along the timeline without speaker labels.
Turn lecture recordings into searchable study notes
On-device transcription. Recordings never leave your phone.