01 · On-Device Whisper Captions
Fast offline transcription.
Transcribe audio directly on Apple Silicon using on-device Whisper models with word-level timing precision. Video never leaves your device.
02 · Social Creator Styling
Dynamic karaoke highlights.
Customize fonts, colors, animations, and word-by-word highlight effects optimized for TikTok, Instagram Reels, and YouTube Shorts.
03 · Private Translation & Export
Multi-language export & burn-in.
Translate subtitles offline using Apple's built-in Translation API. Export crisp burned-in MP4/MOV videos or standard SRT and VTT files.
What it does
C/01
Word-level auto-captioning.
MLX-Whisper engine generates accurate, timestamped captions offline.
Whisper · Word-Level
C/02
Video burn-in & SRT export.
Burn custom styled subtitles directly into video or export subtitle tracks.
4K MP4 · SRT · VTT
Silo Caption · Coming soon
On-device processing. No account, analytics, or telemetry.