OpenSubs vs MelodyWiz

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

OpenSubs compared with MelodyWiz
Detail	OpenSubs	MelodyWiz
What it does	Free AI subtitle generator that runs entirely in your browser	AI music transcription: convert audio to MIDI and sheet music, scan scores, detect song keys
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Not given	Freemium
Pricing	Free: transcription, translation on-device, all 12 subtitle styles, word-by-word highlighting, trimming, burning into video, and all export formats. Credits: $5 for 1,000 credits for cloud translation (approximately 1 credit per 30 subtitle lines).	Free: 5 transcription jobs daily. Downloads are one-time purchases: up to 2 pages $2.99, 3–9 pages $5.99, 10+ pages $9.99 for MusicXML + MIDI; Rehearsal Pack with practice MP3s and slow mixes $3 more. Credit packs: $9 unlocks 4 pieces, $19 unlocks 10. Practice Passes: $9.99 for 30 days or $29 for 90
Key features	Speech recognition in the browser using Whisper Translation to 20 languages including Chinese, Japanese, Korean, Spanish, Portuguese, French, German, Italian, Russian, Arabic, Hindi, Indonesian, Thai, Vietnamese, Turkish, Polish, Dutch and Ukrainia Burn subtitles into MP4 without watermark Export to SRT, VTT, ASS and TXT formats Live subtitles over video playing in browser tabs via extension Support for multiple video formats including MP4, MOV, WebM and MKV No server processing—all work runs locally on user's machine	Transcribe audio files (MP3, WAV, FLAC, OGG) to MIDI and sheet music Scan sheet music PDFs and photos into editable MusicXML Detect song key, Camelot code and BPM Browser preview with highlighted notes before downloading Note-matching exercises with microphone or keyboard input Harmonic-ghost filter to remove phantom octave notes from transcription Quality metrics displayed on every transcription job
What makes it different	100% browser-based with no uploads—the video never leaves your machine Completely open source under AGPL-3.0-or-later so you can verify the code Free forever for transcription, styling and burning—pay only for optional cloud translation No watermark, no file-size limit, no queue, and no account needed to try	Tuned transcription engine with harmonic-ghost filter, not an API wrapper Honest quality metrics on every job showing notes detected and ghosts filtered Free daily use with no account required One-time payments per piece, no subscription required Professional notation engraving and MusicXML output for editing in music software
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	34 −1 (down) since last check	13 no change since last check
Trust Flow (Majestic)	10	0
Citation Flow (Majestic)	30	13
Referring domains (Majestic)	96	1

4 details filled in for both companies.

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