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
Deep Privacy & Sandbox Audit & 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.
- ✓ Client-side processing is supported by catalog metadata and runtime evidence
- ✓ Bounded runtime observation found no payload egress; this is not architectural proof
- ✓ Runs locally without persistent server dependencies
- ✓ No commercial ad networks or cross-site tracking beacons
- ✓ Zero tracking pixels or third-party behavioral profiling scripts
- ✓ Clean script execution environment without user fingerprinting
- ✓ Proprietary frontend and application service
- ✓ Zero-login functionality verified by NoLoginTools manual audit
- ✓ Runtime network egress and cookies verified via automated scanner
- ✓ Tool is online and accessible
- ✓ Monitored continuously by NoLoginTools automated prober
- ✓ No scheduled downtime or access gating detected
NoLogin Lab™ Verified Telemetry & Empirical Audit
Zero data retention; all operations executed strictly in local client memory.
Local client-side execution utilizing in-browser WebAssembly, Canvas, or Web Audio APIs.
Direct lossless file export in open standard formats without forced watermarks or paywall modals.
Primary operational canvas becomes interactive immediately upon URL load with zero registration intercept.
Verified authentic web utility with direct zero-login access and stable production operations.
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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