A native macOS app records system audio or microphone input locally, saves speech-optimised MP3 files with backup segments and can transcribe recordings through the locally installed Codex app after explicit approval. In practical terms, it handles these core tasks: Record system audio from macOS applications locally; Record microphone input as an alternative source; Show the live audio level graphically and in decibels. The result is a faster, more transparent, and more reliable process.
The task
Interviews, conferences, videos and spontaneous voice notes often need to be captured quickly and made searchable. Generic recorders create large files, lose data during interruptions or offer no transparent path to later transcription.
The solution concept
A native macOS app records system audio or microphone input locally, saves speech-optimised MP3 files with backup segments and can transcribe recordings through the locally installed Codex app after explicit approval.
Already delivered
Choose system audio or microphone, monitor the live level and record a compact speech-optimised MP3. The app protects longer recordings in short segments, saves MP3, transcript and log with collision-safe filenames in Downloads, and can also open existing MP3 files. After you confirm, it starts the local Codex app for transcription; optional speaker hints improve structure without claiming uncertain attribution.
Audio source: system audio or microphone · New recording or existing MP3 file · Optional speaker hints and names · Explicit approval for transcription · Local destination folder
Native macOS app using Swift and AppKit · ScreenCaptureKit for system audio · AVFoundation for microphone capture · AVAssetWriter for segmented recording · FFmpeg for MP3 export · Locally installed Codex app through app-server communication · Local file system and clipboard
Feature set
Target users
Outcome
Capabilities
Choose system audio or microphone and grant required macOS permissions
Start recording and check the level
Pause or stop; backup segments merge into an MP3
Optionally select a new or existing local MP3 for transcription
Explicitly approve transcription and set speaker hints
Follow progress in the activity log
Open the TXT transcript and diagnostic log in Downloads or transcribe again
Inputs and data
Integrations
How to get this tool
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