Remove Silence from Lectures

Review the lecture, not the silence.

5 free exports

every month

Lecture recordings have silent parts. The professor writes on the board, changes the slide or waits for answers. 5cut finds these silent parts and cuts them. The speech stays at normal speed.

How 5cut finds the silence

5cut measures the loudness of each recording. It sets its threshold between the background noise and the voice. A small voice detector in the app marks where someone speaks, so 5cut also cuts loud parts without a voice. Short pauses stay, so the speech sounds natural. Read more about noisy recordings.

Gentle, Moderate or Aggressive

You choose how much 5cut cuts. Gentle cuts only long pauses. Aggressive cuts most of them. On a typical phone recording, Gentle keeps about 80% of the time, Moderate about 70% and Aggressive about 60%. A dense lecture keeps more, because it has fewer pauses.

Frequently asked questions

Does 5cut make the speech faster?

No. 5cut cuts the silence and keeps the speech at normal speed. You can also change the Playback Speed in Advanced Settings.

How much time does 5cut save?

It depends on the lecture. On a typical phone recording, Moderate keeps about 70% of the time. A dense lecture with few pauses keeps more.

Can I undo a cut?

Yes. 5cut does not change your original file. Move the threshold or choose another intensity, and 5cut shows the new result.

Does silence removal work offline?

Yes. Silence removal needs no download. The voice detector is in the app, so it also works in Airplane Mode.

Recorder with Chapter Bookmarks

Record lectures, meetings and interviews in the app. Tap to add a chapter bookmark while you record. Later, the bookmark takes you to that moment.

Smart Silence Removal

5cut finds the silence in lectures and podcasts and cuts it. Choose Gentle, Moderate or Aggressive, or set the threshold yourself.

On-Device Translation & AI Summaries

Read the lecture in your language with live translation. With Premium, 5cut also makes AI summaries, key points and flashcards on your iPhone. For this, it uses Apple Intelligence or an AI model that you download one time.

Export to Notion, Anki & Obsidian

Send the transcript and your notes to Apple Notes, Markdown, Anki, Notion or Obsidian. 5cut also makes Anki study cards from the transcript.

Speaker Identification (Premium)

5cut finds up to 4 speakers in one recording. Each speaker gets a color and a name that you can change. This helps with seminars and group discussions.

How it works

Record or import audio or video on your iPhone.

Cut the silence. 5cut shows speech in green and silence in red.

Transcribe and translate on your iPhone. With Premium, 5cut also makes AI summaries.

Export to your study tools: Anki, Notion, Obsidian or Apple Notes.

Your recordings never leave your iPhone

5cut cuts, transcribes and makes notes on the device. There is no 5cut server. Test it yourself: download a transcription model one time, then turn on Airplane Mode. 5cut works the same. The app has no account, no analytics and no ads.

Free download · Premium: monthly with 7 days free, Semester (6 months) or one-time · No account