AhoChord Ver 2

AhoChord Ver 2 is a precision tool for musicians who need instant chord recognition and transposition, not guesswork.

Designed for Android 4.1+, this utility eliminates the need for manual music theory calculations. It functions as a real-time chord analyzer and a comprehensive chord library, allowing you to identify complex voicings from audio input or quickly lookup fingerings for any instrument. The core engine processes harmonic content to display the root note, chord quality (maj, min, dim, aug, sus, 7th, 9th, 11th, 13th), and inversion in milliseconds.

Core Capabilities

• Real-Time Audio Analysis: Connects to your device’s microphone input. The algorithm isolates the fundamental frequency and overtones, mapping them against a database of standard and extended chord structures. Results update dynamically as you play.
• Chord Library Browser: Navigate a searchable database containing over 500 chord types. Filter by root note, chord family, or instrument. Each entry displays multiple voicing diagrams for guitar, ukulele, piano, and bass.
• Transposition Engine: Select a source chord and a target key. The tool instantly recalculates all intervals and displays the equivalent chord in the new key, preserving the original voicing structure where possible.
• Fretboard & Keyboard Visualizer: A dynamic interface renders the detected chord on a guitar fretboard and a piano keyboard simultaneously. Tap any location on the visualizer to hear the individual note.
• Custom Preset Saving: Save analyzed chords or manually constructed voicings as user presets. Organize them into sets for specific songs, keys, or practice routines. Presets sync locally and are available offline.

Key Advantages

• No latency: Audio processing runs on-device without requiring an internet connection.
• Supports non-standard tunings (guitar, bass, ukulele) with manual string-by-string pitch input.
• Export chord diagrams as PNG images for use in sheet music or lesson notes.
• Works with external audio sources via USB or 3.5mm line-in adapters.
• Lightweight APK size optimized for devices running Android 4.1.1 and above.

Download mobile app now to convert any harmonic pattern into actionable fretboard or keyboard positions.

Disclaimer: This application requires an active internet connection for initial database download and preset sync. Contains in-app purchases for expanded chord library packs and ad-free mode. Recommended for users aged 13 and above. Continuous audio input may increase battery consumption. Data usage is limited to preset synchronization; no personal audio recordings are stored on external servers.