FlexChords
Turn any YouTube video into accurate guitar chords
Visit website →About
FlexChords turns any YouTube video or audio file into accurate, synchronized guitar chords in seconds. Instead of relying on noisy predictions, FlexChords pairs deep learning with music-theory smoothing to eliminate glitches and deliver clean, musical progressions.
Features include YouTube and audio chord detection, synced playback with real-time chords, an interactive timeline with a chord editor, and key and tempo estimation. There is also instant access to an unlimited catalog of pre-analyzed songs plus 5 free custom scans per month.
The key differentiator: it does not trust raw ML chord models that produce erratic, rapid-fire jitter. A custom deterministic music-theory layer absorbs glitches and respects key context for playable progressions.
Free to start with paid options for advanced features. MIDI export coming soon.
AI-assisted draft, human-reviewed before publishing — see how we choose & review tools.
Why we picked it
Chord detection tools exist, but most deliver noisy results or lock basic features behind subscriptions. FlexChords combines ML with music-theory smoothing for cleaner output, and offers 5 free custom scans monthly without gating core tools. The platform is new, but the approach is worth trying if you learn songs from YouTube.
Related tools
- 1 PDF to MP3 Turn PDFs into interactive audiobooks with AI Freemium
- 2 Onepin AI voice production agent fixing names, prices and dates before they ship Freemium
- 3 Whisper The free open-source baseline everyone benchmarks — weak on Gulf dialect Free
- 4 Azure AI Speech 18 Arabic locales, extra tuning for Saudi Arabic, and a UAE region Freemium
- 5 ElevenLabs Scribe Transcription from the voice-AI company, with 32-speaker diarization Freemium
- 6 AssemblyAI Developer speech API that rates its own Arabic honestly: 10-25% error Freemium