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EarChord vs Opah

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 Opah
DetailEarChord logo EarChordOpah logo Opah
What it doesChord detection in your browser Music data and marketing intelligence for independent artists
StageNot given Startup
FoundedNot given 2026
Based inNot given US
Pricing modelFree Freemium
PricingNot given Opah Core: $0.99/month for first 3 months, then $19/month (3 artists, 1 Niche Playbook); Opah Pro: $4.99/month for first 3 months, then $39/month (10 artists, 3 Niche Playbooks); Opah Suite: $9.99/month for first 3 months, then $89/month (30 artists, 3 Niche Playbooks). Annual billing available at $
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
  • Spotify popularity score (0-100) updated daily
  • Meta ad archive back to 2020
  • Instagram, TikTok, YouTube social tracking
  • Niche Playbook to read up to 6 artists as one market
  • Audience demographics by city
  • Smart Links for releases with email capture
  • Artist comparison on one axis
  • Song analytics for top 10 tracks
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
  • Tracks every Meta ad since 2020 while competitors do not show this data
  • Lower pricing than major competitors
  • Tracks artists silently without following or contacting them
  • Human support only, no AI chatbot
Community votes00
DR (Domain Rating by Ahrefs)2 no change since last checkNot checked yet no change since last check
Trust Flow (Majestic)83
Citation Flow (Majestic)2316
Referring domains (Majestic)112

4 details filled in for both companies.

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