Mermer: Voice Recorder

Mermer turns voice recordings into searchable transcripts on your iPhone. Revisit a meeting or find the passage where someone mentioned a date or a price, then tap that paragraph to hear it.

Record and revisit

Record with a live waveform and timer, and pause without ending the take. Recording continues with the screen locked. After you stop, Mermer makes a transcript with Apple's on-device speech technology when a model for your language is available. Keep Mermer open until the transcript appears; if you switch apps, processing waits and continues when you come back.

Find recordings by title or by words in their transcripts. Matching passages are highlighted, and inside a transcript you can step from one match to the next. Play audio at 1x, 1.25x, 1.5x or 2x speed. Skip fifteen seconds in either direction or scrub through the waveform.

Correct what the transcriber got wrong

Speech recognition often stumbles on names and numbers. Edit any paragraph, and Restore Original Text brings back the transcriber's words. (Moving part of an edited paragraph to another speaker, or transcribing the recording again, replaces that saved original.) Search and sharing use your corrected words right away.

Keep track of speakers

Mermer can separate a conversation into speaker turns. Tap a speaker label to give it a name. If a turn went to the wrong person, change the speaker for that paragraph, or select just the words that belong to someone else and move them. Two labels that are the same person can be merged, and you can tell Mermer that a remembered voice was not who it thought.

In a conversation, choose Save & Remember Voice to use that voice profile when labeling future recordings. Remembering a voice is optional. You can rename or delete saved profiles in Remembered Voices. Deleting a profile leaves the names already saved in existing transcripts. Transcription and speaker recognition can make mistakes.

On-device processing

Transcription and speaker processing happen on your iPhone. Mermer does not upload recordings or transcripts for processing. There is no account, advertising, subscription, or in-app purchase.

You can share audio or transcripts using the iOS share sheet. Device backups may include Mermer data according to your settings. Copies you export or retain in backups are separate from the items you delete in Mermer.

Everyday details

- Speaker turns with their start times, plus optional paragraph timestamps
- Tap a paragraph to play from its beginning
- Search across recording titles and transcripts, with next and previous match
- Edit transcript text and restore the original
- Correct speakers per paragraph, or for just the words you select
- Choose the transcription language for new recordings, or redo one recording in another
- Advanced settings for the speech model and speaker detection, and Transcribe Again to apply them
- Audio and transcript sharing
- Brief Undo after deleting a recording
- VoiceOver support and Dynamic Type for transcript reading

Requires iOS 26 or later. Transcription availability depends on the device and supported language. An internet connection may be needed to install Apple's speech model; iOS manages model updates. Recording remains available without a transcription model. Processing time varies with the recording and device.

Please obtain permission before recording other people or remembering their voices.