圖標

Let's Bend: Harmonica Tuner

Harmonica tuner for learning bending techniques with real-time visual feedback.
新版本 3.8.0
What's new in 3.8.0
• New setting: choose between sharps (♯) and flats (♭) for accidentals – e.g. C# can now be shown as Db
• The chosen notation is applied everywhere in the app and saved automatically
• Note frequencies remain unchanged – only the displayed note names change
d Let's Bend: Blues Harmonica Tuner & Trainer assists harmonica players in accurately hitting bending notes through real-time visualization.

The application is completely free, ad-free, and can be used without registration. Sounds are captured via the MediaRecorder library as a continuous data stream, analyzed using advanced pitch detection algorithms, and displayed in real-time.

All common keys and special tunings of your blues harps are supported and can be easily configured via the settings menu.

Features:
• Fast and accurate musical note detection
• Multiple pitch detection algorithms (YIN, MPM, and HYBRID)
• Support for all common harmonica keys and tunings
• Adjustable concert pitch settings
• Visualization of blow bends, draw bends, over blows, and over draws
• Customizable confidence settings for pitch detection

Technical Details (for developers):
• Open-source project available on GitHub
• Built using Model-View-Controller (MVC) architecture
• Developed with Gradle build system
• Requires Android 9 (API 28) or higher
• Uses Dagger for dependency injection
• Implements SLF4J for logging
• Optimized for privacy (no data collection or storage)
• Part of a multi-platform project that includes desktop (macOS, Linux, Windows) and web versions

The app is also available for desktop platforms and as a web application at https://letsbend.de

Enjoy and Let's Bend!

Let's Bend is free and open source. If you find it useful, consider supporting development: https://ko-fi.com/egdels

版本

雖然在下方可選擇下載 APK 檔案,但要留意這樣的安裝方式將不會收到更新通知,是一種較不安全的下載方法。建議您先安裝 F-Droid 用戶端使用。

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  • 版本 3.8.0 (30800) 建議 於 2026 年 7 月 29 日新增

    此版本需要 Android 9.0 或更高的版本。

    此套件包由原開發者建置和簽署,並保證與此原始碼 Tarball 保持一致。

    權限
    • 錄製音訊
      這個應用程式在使用期間可以使用麥克風錄音。
    • de.schliweb.bluesharpbendingapp.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下載 APK 5.2 MiB PGP 簽章 | 建置紀錄

  • 新版本 3.7.0
    What's new in 3.7.0
    • Smoother display: less flickering for notes, chords and pitch detection
    • Training: notes must now be held steadily to count – no more accidental hits
    • Training: next note advances immediately, even after silence
    • Training: fixed a crash during training sessions
    • Cleaner runtime output
  • 版本 3.7.0 (30700) - 於 2026 年 3 月 19 日新增

    此版本需要 Android 9.0 或更高的版本。

    此套件包由原開發者建置和簽署,並保證與此原始碼 Tarball 保持一致。

    權限
    • 錄製音訊
      這個應用程式在使用期間可以使用麥克風錄音。
    • de.schliweb.bluesharpbendingapp.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下載 APK 5.2 MiB PGP 簽章 | 建置紀錄

  • 新版本 3.6.0
    What's new in 3.6.0
    • Upgraded to Java 21 for improved performance and modern language features
    • Enhanced edge-to-edge support for Android 15+
    • Fixed OutOfMemoryError in audio pitch detection on Android
    • Fixed NullPointerException in note display during view transitions
    • Improved null-safety and stability fixes for note display
    • Code quality improvements: Google Java Format, Error Prone, and JaCoCo coverage
    • Android Lint warnings reduced from 114 to 11
    • Updated all dependencies to latest
  • 版本 3.6.0 (30600) - 於 2026 年 3 月 16 日新增

    此版本需要 Android 9.0 或更高的版本。

    此套件包由原開發者建置和簽署,並保證與此原始碼 Tarball 保持一致。

    權限
    • 錄製音訊
      這個應用程式在使用期間可以使用麥克風錄音。
    • de.schliweb.bluesharpbendingapp.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    下載 APK 5.2 MiB PGP 簽章 | 建置紀錄