smart-guitar-tuner-android ^v0.1.2

Professional guitar tuning application for Android

Create custom tunings and record your own string reference sounds. Perfect for guitarists using alternate tunings (Drop D, Open G, DADGAD, etc.) or wanting personalized practice tools.

Kotlin Android Guitar Tuner Audio Mobile Material Design

GitHub

smart-guitar-tuner-android — a professional guitar tuning application that allows you to create custom tunings and record your own string reference sounds. Perfect for guitarists using alternate tunings (Drop D, Open G, DADGAD, etc.) or wanting personalized practice tools.

Main

Tuning

Player

Record

Custom Tunings — Create, edit, and manage unlimited custom tunings
Record Your Own Sounds — Record 6 seconds of each string for perfect reference
Built-in Default Sounds — Ready to use out of the box with standard tuning
Audio Playback — Loop, pause, seek, and replay recorded sounds
Re-record Anytime — Update individual strings without redoing everything
Storage Persistence — Tunings survive app updates and reinstallation

For Users:

Create a tuning — Tap "Add New Tuning" and enter a name (e.g., "Drop D")
Record strings — Select your tuning, tap "Record" for each string, and play your guitar
Play back — Use the audio player to listen and verify your recordings
Re-record — Not satisfied? Tap "Re-record" to capture a better take

For Developers:

Prerequisites: Android Studio Ladybug, Android SDK 24+, JDK 11+

git clone https://github.com/aixandrolab/smart-guitar-tuner-android.git
cd smart-guitar-tuner-android
# Build debug APK (Build/Generate App Bundles or APKs/Generate APKs)

app/
├── src/main/java/com/example/smart_guitar_tuner_android/
│   ├── MainActivity.kt           # Tuning list management
│   ├── StringTunerActivity.kt    # Per-tuning string management
│   ├── RecordingActivity.kt      # Audio recording (6 seconds)
│   ├── AudioPlayerActivity.kt    # Playback with loop/seek
│   ├── SettingsManager.kt        # File-based tuning storage
│   └── ...
├── src/main/res/                 # Layouts, drawables, values
└── src/main/assets/              # Default string sounds (1_string.wav, etc.)

Recorded tunings are stored in:

Documents/smart-guitar-tuner/tuners/[Tuning Name]/
├── string_1.wav
├── string_2.wav
└── ... string_6.wav

Permission	Purpose
`RECORD_AUDIO`	Required for recording guitar strings (Android 8.0+)
`MANAGE_EXTERNAL_STORAGE`	Required for Android 11+ to ensure tunings survive app updates

The app requests these permissions at runtime with clear explanations.