EarChord vs Dupes

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

EarChord compared with Dupes
Detail	EarChord	Dupes
What it does	Chord detection in your browser	Find and remove duplicate tracks in your Serato DJ library
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Free	Paid
Pricing	Not given	$99 (launch pricing, regularly $129) - one-time purchase for macOS
Key features	Chord progression detection Key identification using Krumhansl-Schmuckler profiles Tempo/BPM detection from onset envelope Interactive timeline of detected chords Roman numeral chord notation Export chord list as text or file Supports MP3, WAV, M4A, AIFF, FLAC and OGG files	Compares 10 metadata parameters Reads Serato database directly with no exports required Auto-select keepers by 14 conditions Archive or trash duplicate files with automatic crate cleanup 100% local processing with no cloud uploads Native Apple Silicon support for M1 through M5
What makes it different	Runs entirely in browser with no uploads or server processing Completely free with no daily limits or account required Uses transparent signal processing instead of hidden machine learning Shows actual detection results so you can see where it guesses	Designed exclusively for Serato DJ Pro with direct database access Completely private with 100% local processing Works on external drives and all modern Macs
Community votes	0	0
DR (Domain Rating by Ahrefs)	2 no change since last check	49 no change since last check
Trust Flow (Majestic)	8	5
Citation Flow (Majestic)	23	26
Referring domains (Majestic)	11	39

4 details filled in for both companies.