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Bending Trainer

February 9, 2024 v2.0.0 released.

Harmonica Bending Trainer supports bending practice for 10-hole diatonic harmonica.

February 9, 2024, v2.0.0

  • Add circle of fifths.
  • Change some image parts.
  • Change icon design.

August 16, 2023, v1.11.3

  • Minor bug fixes.

June 13, 2023, v1.11.2

  • Minor bug fixes.

June 2, 2023, v1.11.1

  • Minor bug fixes.

May 22, 2023, v1.11.0

  • Improvements scale-marks on pitch gauges.

October 4, 2022, v1.10.1

  • Minor bug fixes.

December 7, 2021, v1.10.0

  • Add number style tab to Tablature.

December 1, 2021, v1.9.0

  • Add Tablature.

September 9, 2021, v1.8.3

  • Minor bug fixes.

May 18, 2021, v1.8.2

  • Minor bug fixes.

May 4, 2021, v1.8.1

  • It revised the privacy policy.
  • Some bugs fixes.
  • It updates some libraries for iOS14.

January 25, 2021, v1.8.0

  • Add pitch needle to Harmonica-tab.

October 1, 2020, v1.7.3

  • Minor bug fixes.

September 7, 2020, v1.7.1

  • Add the name of the temperament-dot on the tuner.

August 27, 2020, v1.7.0

  • Add bending trainer for half-valved diatonic harmonicas.

July 7, 2020, v1.6.3

  • Minor bug fixes.

July 4, 2020, v1.6.2

  • Add the appearance of hole-buttons.

May 24, 2020, v1.6.1

  • Minor bug fixes.

April 23, 2020, v1.6.0

  • Add overbending trainer.

January 16, 2020, v1.5.1

  • It improves the performance of bending trainer on auto-mode.

January 14, 2020, v1.5.0

  • Add auto-mode to bending trainer.

December 30, 2019, v1.4.0

  • Add harmonica.
  • Add Marine Band compromise temperament.

November 18, 2019, v1.3.0

  • Add metronome.

October 30, 2019, v1.2.1

  • Add just intonation mark on the gauge of tuning meter.

October 2, 2019, v1.1.0

  • Add tuning meter.

September 20, 2019, v1.0.1

  • Fix hole-button layout for 4-inche device.

September 16, 2019, v1.0.0

1. Choose the key of your harmonica.

[how to use 01]

[how to use 011]


2. Turn on to manual mode.

[how to use 015]


3. Select a hole of harmonica.

[how to use 02]


4. Draw (or blow) straight note. And move the gauge to the pitch dot.

[how to use 03]


5. You get bending, pitch dot does down.

[how to use 04]


※. The blowing/drawing of each hole is as follows.

[how to use 05]

The key of the song.
The key of the harmonica.
The position.

Frequently, you might know just two of these items. How is the third one deduced?


To determine the harmonica's key by considering the position and key of the song.

As an example, you have...
  • Song's key: A
  • Position: 2nd position
Which harmonica do you choose?

1. On Mode, choose `Song's Key`.
2. Choose `A` from the Key for Mode.
[how to circle of 5th-1-1]

3. The harmonica's key is located at `2nd` on the Circle of Fifths.
[how to circle of 5th-1-2]

[how to circle of 5th-1-3]

4. You'll take up an D-harmonica.
----------------------------------------


To determine the position by using the harmonica's and the song's keys.

As an example, you have...
  • Harmonica's key: G
  • Song's key: A
What position do you use when playing the G-harmonica?

1. On Mode, choose `Harmonica's Key`.
2. On the Key, select `G` for Mode.
[how to circle of 5th-1-1]

3. The position is at `A` on the Circle of Fifths.
[how to circle of 5th-2-2]

[how to circle of 5th-2-3]
4. You'll play the song in third position.

[main screen]

(1). Pitch Dot:

This goes up and down to match the harmonica pitch. When you lower the sound with a bend, it moves down.
Also, it sounds the note when you touch on manual mode, so you can check the pitch.


(2). Gauge of Pitch:

This is a measure of the pitch.


(3). Harmonica Hole Selector:

On auto mode, here is only displays with no button.
There are 10 buttons here on manual-mode.

[main harmonica buttons]

(4). Settings:

Shows Settings Picker.


(5). Metronome:

Shows Metronome Picker.


(6). Manual Mode Switch:



Settings Picker for manual mode

[settings picker manual]

(7). Temperament:

The pitch of just intonation is calculated based on the following values.

[just intonation]

The pitch of MB Tune(Marine Band compromise temperament) is calculated based on the following values.

[marine band tune]


(8). Volume:

Volume when pitch dot is touched.


(10). Key of Harmonica:

You can change the key of the harmonica.



Settings Picker for auto mode

[settings picker auto]

(7). Temperament:


(9). Reference Pitch:


(10). Key of Harmonica:

You can change the key of the harmonica.



Metronome Picker

[metronome picker]

(11). Accent:


(12). Accent Volume:


(13). Play Start/Stop:


(14). Tempo(beat per minute):


(15). Master Volume:


- This is a trainer for over-blow and over-draw.

[over screen]

(1). Pitch Dot:

This goes up and down to match the harmonica pitch. When you higher the sound with over-blowing(or drawing), it moves up.
Also, it sounds the note when you touch on manual mode, so you can check the pitch.


(2). Gauge of Pitch:

This is a measure of the pitch.


(3). Harmonica Hole Selector:

On auto mode, here is only displays with no button.
There are 10 buttons here on manual-mode.

[over harmonica buttons]

(4). Settings:

Shows Settings Picker.


(5). Metronome:

Shows Metronome Picker.


(6). Manual Mode Switch:

NOTE: In auto mode, you cannot use 3-hole over-blow and 8-hole over-draw. This is because it conflicts with the range of the other holes.



Settings Picker for manual mode

[settings picker manual]

(7). Temperament:

The pitch of just intonation is calculated based on the following values.

[just intonation]

The pitch of MB Tune(Marine Band compromise temperament) is calculated based on the following values.

[marine band tune]


(8). Volume:

Volume when pitch dot is touched.


(10). Key of Harmonica:

You can change the key of the harmonica.



Settings Picker for auto mode

[settings picker auto]

(7). Temperament:


(9). Reference Pitch:


(10). Key of Harmonica:

You can change the key of the harmonica.



Metronome Picker

[metronome picker]

(11). Accent:


(12). Accent Volume:


(13). Play Start/Stop:


(14). Tempo(beat per minute):


(15). Master Volume:


- This is a trainer for bendings that are specific to the half-valved diatonic harmonica. The common bendings for diatonic harmonica should be used for the ’Bending’ tab.

[halfvalved screen]

(1). Pitch Dot:

This goes up and down to match the harmonica pitch. When you lower the sound with a bend, it moves down.
Also, it sounds the note when you touch on manual mode, so you can check the pitch.


(2). Gauge of Pitch:

This is a measure of the pitch.


(3). Harmonica Hole Selector:

On auto mode, here is only displays with no button.
There are 10 buttons here on manual-mode.

[halfvalved harmonica buttons]

(4). Settings:

Shows Settings Picker.


(5). Metronome:

Shows Metronome Picker.


(6). Manual Mode Switch:



Settings Picker for manual mode

[settings picker manual]

(7). Temperament:

The pitch of just intonation is calculated based on the following values.

[just intonation]

The pitch of MB Tune(Marine Band compromise temperament) is calculated based on the following values.

[marine band tune]


(8). Volume:

Volume when pitch dot is touched.


(10). Key of Harmonica:

You can change the key of the harmonica.



Settings Picker for auto mode

[settings picker auto]

(7). Temperament:


(9). Reference Pitch:


(10). Key of Harmonica:

You can change the key of the harmonica.



Metronome Picker

[metronome picker]

(11). Accent:


(12). Accent Volume:


(13). Play Start/Stop:


(14). Tempo(beat per minute):


(15). Master Volume:


[tuner screen]

(1). Gauge of Pitch:

The target pitch of each temperament is indicated by a tiny pink dot on the scale.
It always points to zero on equal temperament.


(2). Harmonica Hole Selector:

On auto mode, here is only displays with no button.
There are 20 buttons here on manual-mode.

[tuner harmonica buttons]

(3). Settings:

Shows Settings Picker.


(4). Manual Mode Switch:



Settings Picker

[tuner settings picker]

(5). Temperament of the dot on the gauge:

The pitch of just intonation is calculated based on the following values.

[just intonation]

The pitch of MB Tune(Marine Band compromise temperament) is calculated based on the following values.

[marine band tune]


(6). Reference Pitch:


(7). Key of Harmonica:

You can change the key of the harmonica.


[keyboard screen]

(1). Harmonica:


(2). Volume:


(3). Settings:

Shows Settings Picker



Settings Picker

[keyboard settings picker]

(4). Temperament:

The pitch of just intonation is calculated based on the following values.

[just intonation]

The pitch of MB Tune(Marine Band compromise temperament) is calculated based on the following values.

[marine band tune]


(5). Reference Pitch:


(6). Key of Harmonica:

You can change the key of the harmonica.



NOTE: This harmonica is not polyphonic. This harmonica has no chord.

[tablature screen]

(1). Harmonica Buttons:

I'm sorry. This harmonica has no sound.


(2). Picker for notes:


(3). Staff and Note:


(4). Settings:

Shows Settings Picker


(5). Tablature:


[tablature arrow screen]

[tablature number screen]


Settings Picker

[tablature settings picker]

(6). Tablature Style:


(7). Key of Harmonica:

You can change the key of the harmonica.


(8). Musical key on Staff:

[circle of 5th screen]

(1). Mode:


(2). Key for Mode:

Set the mode's key.


(3). Circle of Fifths:

It displays a circle of fifth for the mode.
You can rotate this circle.

Q. Why does the metronome stop when I close this app?
A. I'm sorry. The metronome in this app is a function that assists in practicing bending. Therefore, playback in the background is not supported.

Q. このアプリは日本語に対応してないのですか?
A. 英語と日本語に対応しています。

日本語で表示したいとき。

[faq language 01]

下の方に移動して、Bend Trainerをさがします。

[faq language 02]

「優先する言語」があります。

[faq language 03]

「日本語」を選びます。

[faq language 04]

This Privacy Policy covers your use of this application.
This app does not collect, store, or share any personal information, or anything related to your device. We do not collect any statistics, trends, neither do we track user movements.
The app allows you to open web URLs from the application. The URLs might be saved by Internet browsers on your device.
For information regarding the information stored by the application, please read the privacy policy of the internet browsers on your device.
Also, this app displays advertisement by AdMob. The advertising module may use your data. In this Privacy Policy, please refer to Privacy Policy by Google.

Thank you for the download.
If you enjoy using this app, would you mind taking a moment to rate it in AppStore?
And please send us any comments, bug reports, English mistakes, and suggestions.
When you contact me, please send mail to info@blowbend.jp.
In addition, you may not necessarily be able to answer to additional feedback from you. Your understanding is requested.
Thank for your support.

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