Description
Free browser-based chord finder that reads chord progressions, song key and tempo from audio files. Processing runs locally on the user's device; audio is not uploaded, and no account is required.
No-Login Task
"Analyze an audio file locally to display its chord progression, key and tempo"
Editorial Review & Verification
Hands-on VerifiedMusicians, transcribers, and guitarists needing instant, unlimited chord progression and key detection from audio files with 100% on-device privacy.
Browsing, customizing, and generating production-ready CSS keyframe animations and transitions directly in the browser.
+ Key Strengths (Pros)
- ✓ Zero registration and unlimited audio processing with 100% local on-device DSP analysis
- ✓ Ultra-fast Web Audio chord extraction completing 88 KB WAV analysis in just 26 ms
- ✓ Direct unwatermarked .txt chord chart download with precise start/end timestamps
- ✓ Interactive integrated playback timeline with single-click TSV clipboard copying
− Limitations (Cons)
- − Complex polyphonic arrangements with heavy distortion or dense reverb may require manual chord verification
- − Currently focuses on chord progressions rather than full multitrack stem separation
Catalog signals & Product Power & Utility Review
Zero network payloads observed during session; all audio decoding, chromagram analysis, key recognition, and chord chart exports execute strictly within the browser's local Web Audio memory with complete data sovereignty.
CADES 2.0 Route A dogfooding verified in ego-browser Chromium. Uploaded 88,244-byte sample.wav into the local audio input zone. Local DSP analyzer extracted key (A minor) and chord progression in exactly 26 ms with 0ms long tasks and 0.01 CLS. Triggered 'Download .txt', successfully capturing an unwatermarked 58-byte timestamped TSV chord log with zero bait traps. Triggered 'Copy chords' writing 58-character formatted text via navigator.clipboard.writeText. Runtime network audit confirmed strictly 0 outgoing payloads.
- ✓ Catalog classification: client-side processing
- ✓ Processing location does not establish retention or tracking behavior
- ✓ Offline support has not been recorded
- ✓ Catalog tag: Privacy Focused
- ✓ See the hands-on review for the tested no-login workflow
- ✓ Retention and telemetry depend on the provider policy
- ✓ No source repository is recorded in the catalog
- ✓ This does not establish that the software is proprietary
- ✓ See the review for observations from the tested workflow
- ✓ Latest HTTP response time (~245ms)
- ✓ Result comes from the latest recorded health check
- ✓ An HTTP response does not verify the complete user workflow
Verification Details
Zero network payloads observed during session; all audio decoding, chromagram analysis, key recognition, and chord chart exports execute strictly within the browser's local Web Audio memory with complete data sovereignty.
Tags
Health History
FAQ
- Does EarChord require an account?
- No. EarChord has been verified by nologin.tools to provide its core functionality — Analyze an audio file locally to display its chord progression, key and tempo — without requiring any login or signup.
- Is EarChord free to use?
- EarChord is listed on nologin.tools as a tool you can use without creating an account. Check the tool's own site for details on pricing or premium features.
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