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EarChord vs StageOS

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 StageOS
DetailEarChord logo EarChordStageOS logo StageOS
What it doesChord detection in your browser Free EPK and gig listings for DJs and grassroots artists to get booked by promoters, venues and festivals
StageNot given Not given
FoundedNot given Not given
Based inNot given GB
Pricing modelFree Freemium
PricingNot given Free: EPK, gig listings, directory profile, first festival application included. Basic: £10/month or £100/year with 5 festival applications and 5 promoter pitches per month. Pro: £24/month or £240/year with unlimited applications, auto-apply, AI drafting and promotion on StageOS socials. New artists
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
  • Electronic press kit (EPK) with bio, mixes, photos, videos and past shows
  • Gig listings in local what's on guides by city and genre
  • Festival directory and applications
  • Artist and promoter search by genre, city and date
  • Booking enquiry form and inbox for direct contact
  • Playlist placements on StageOS TV
  • WhatsApp community with local and worldwide groups
  • Festival sourcing and auto-apply for Pro members
  • Social media promotion of tracks, mixes and gigs on Pro
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
  • Completely free EPK and gig listings for artists, forever
  • One integrated platform replacing five separate subscriptions
  • Festival auto-apply sends EPK automatically to matching festivals
  • No card required to start, even for Pro trial
Community votes00
DR (Domain Rating by Ahrefs)2 no change since last check7 no change since last check
Trust Flow (Majestic)81
Citation Flow (Majestic)2321
Referring domains (Majestic)115

4 details filled in for both companies.

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