TN-1B

What's New!

November 21, 2025 v1.6.6 released.

Outline

TN-1B is tuning meter only for a bassist.
It detects the pitch of notes that picked up by a microphone, and it displays the difference from the right pitch.

Permissions

RECORD_AUDIO: It is necessary to use the microphone.
INTERNET: It uses to show webview.
AD_ID: It uses to show ads.

Tested devices

Pixel 7a [Android14]
Xperia1(SO-03L) [Android11]
*This doesn't guarantee successful normal operation. Please note.

Reported devices to work.

Arrows Z in (ISW13F) FUJITSU, proximity sensor does not work properly has been reported.
In menu [Manual Mode Setting], turn off the checkbox "Proximity sensor works" please.

Release history

November 21, 2025, v1.6.6 released.

Update some libraries.

July 17, 2025, v1.6.5 released.

Update some libraries.

July 10, 2024, v1.6.4 released.

Update some libraries.

July 13, 2023, v1.6.3 released.

Fix some layouts.

November 2, 2021, v1.6.2 released.

Update some libraries.

August 19, 2021, v1.6.0 released.

Update some libraries for in-app purchases.

November 28, 2020, v1.5.3 released.

It made the ad on the tuning list smaller.

October 19, 2020, v1.5.1 released.

Fix a bug about screen displaying.

July 26, 2019, v1.5.0 released.

Improve performance on auto-mode.

March 23, 2019, v1.4.3 released.

Fix for Android P.

December 17, 2018, v1.4.2 released.

Some image parts fix.

November 12, 2018, v1.4.1 released.

Minor bug fixes.

October 31, 2018, v1.4.0 released.

String-buttons are improved.

October 11, 2018, v1.3.3 released.

Fix some bugs.
Update some library.

February 6, 2018, v1.3.2 released.

Fix ad banner due to the suspension of native ads.

September 22, 2017, v1.3.1 released.

Minor bug fix.
Some libraries updated.

July 17, 2017, v1.3.0 released.

Added Welcome Tutorial to menu.

June 2, 2017, v1.2.2 released.

It improves a function of the meter.

May 11, 2017, v1.2.0 released.

It improves a function of the meter.
Tuning set menu is moved to drawer menu.

April 15, 2017, v1.1.3 released.

The setting of cent gauge has added to the menu.
Fixed some image parts.

April 7, 2017, v1.1.2 released.

The display of the meter needle was improved.

September 8, 2016, v1.1.1 released.

Fix a bug in point of displaying the help.

September 5, 2016, v1.1.0 released.

Change the indicator on the meter.

September 2, 2016, v1.0.0 released.

Known bugs

We have not found errors.

FAQ

Q. The pitch meter is jerky. I cannot tune my bass well.

A. Please try to Manual-Mode. And twang harmonics(flageolet tones) on 12th-fret. May result in a smooth movement.

Q. I cannot put a check in the checkbox of `Proximity sensor works`.

A. This feature is disabled on devices that do not have a proximity sensor.

Privacy Policy

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. In this Privacy Policy, please refer to Privacy Policy by Google.

to You.

Thank you for the download.
Please send us any comments, bug reports, English mistakes, and suggestions. When you contact me, please send mail to info@blowbend.jp.
Also, you may not necessarily be able to answer to additional feedback from you. Your understanding is requested.

TN-1B

How to tune your bass.

1. First, please check the settings of TN-1B.

Look at info-window in the center of the screen.
Standard Pitch: Can you see `A440`?
Tuning set: Can you see `Standard`?

You can change standard pitch here.

You can change tuning set here.

2. Turn to Manual-Mode.

3. Tap the button on the far left. Then selected E-string.

4. Please pick the E-string(thickest string) of your bass.

Take care not to sound other strings.

5. Look at the meter.

The sound of your bass is too low against target pitch. Wind the tuning peg up slowly that until the needle points to zero.

The sound of your bass is low against target pitch. Wind the tuning peg up slowly that until the needle points to zero.

The sound of your bass is too high against target pitch. Loosen the tuning peg to that the needle is to come to the left of zero once back, and wind the tuning peg up slowly that until the needle points to zero.

The sound of your bass is high against target pitch. Loosen the tuning peg to that the needle is to come to the left of zero once back, and wind the tuning peg up slowly that until the needle points to zero.

Note.
When the sound of the bass is higher than the target pitch (or gone to the right side over zero), loosen the strings once. You make the needle that matches to zero by while winding up. By doing so, the string does not loose easily, and the pitch will stable.

Since the needle is pointing to zero, the pitch is in tune with the target.

IMPORTANT.
Octave higher from target pitch, and in pitch of octave lower, the needle points zero. From this, TN-1B displaying `too high`, and pitch of your bass is further increased, the meter will be displayed as `too low`.
For this reason, you wind up the string, is very dangerous that break a string, even if meter displayed as `too low`. If you're a bass beginner, then it is necessary that people who can well to tuning your bass. Please use TN-1B only to fine-tune.

6. In the same way, tune to G-string from A-string.

7. After tuning up to G-string, back to the E-string, Please check up to G-string.

In all strings, the meter needle to the point to zero, please repeat tuning. Depending on the strength of the neck of your bass, or the gauge of the string set, you may need to be repeated many times.

8. In all strings, the meter needle points to zero. Tuning is complete.

Bass is a musical instrument that will be off pitch eased. You need to tune always before you play.

TN-1B

Main Controls

(1). Pitch Meter:
Target pitch is the point of zero.
Please turn the tuning peg such that the needle points "0".

(2). Information of Note:
Displays tuning set name and frequency of target note.

(3). String Button:
From left, E, A, D, G-string.
On Auto mode, these buttons become an indicator of detecting string.

(4). Mode Button:

Off mode:

Manual mode: You switch target string by string-button.

Auto mode: You switch target string automatically.
You cannot use harmonics on 12th-fret.

Auto mode(one-octave higher): You switch target string automatically.
This is auto-mode for harmonics on 12th-fret.

(5). Tuning Fork:
It sounds when you tap. The sound will stop when you tap again.

(6). Volume of a Tuning Fork:

(7). Cent Gauge:
It indicates the pitch in cents. One scale mark will correspond to 1 cent.
Once you buy `Premium Upgrade`, you can use this feature.

(8). Drum Machine:
It will transition to Rhythm Pattern List Screen.

(9). Lower String:
It will transition to Lower String dialog.

(10). Higher String:
It will transition to Higher String dialog.

(11). Standard Pitch:
It will transition to Standard Pitch dialog.

(12). Note Notation:
It will transition to Note Notation dialog.

(13). Cent Gauge Setting:
It will transition to Cent Gauge Setting dialog.
This is a feature of Premium Upgrade.

(14). Manual Mode Setting:
It will transition to Manual Mode Setting dialog.

(15). Buy "Premium Upgrade":
You can buy "Premium Upgrade" by in-app purchase.
Premium Upgrade includes the following features.

Add cent-gauge.
Add drum machine.
Remove all ad banners on this app.

(16). Welcome Tutorial:

(17). Help:
This page you are looking at now is displayed.

(18). About:
It will transition to About dialog(information about the version).

(19). Tuning Sets:

TN-1B

Drum Machine

(1). Name:

(2). Beat Selector:
You can select the number of items in a beat.

(3). Tempo(BPM):

(4). Start/Stop:

(5). Length of a Pattern:
You can set the length of a beat pattern cycle between 4 and 32.

(6). Beat Indicator:

(7). Tracks:
From the top is closed hi-hat, half closed hi-hat, snare drum, bass drum.

(8). Tempo Button:
You can change the tempo(BPM).

(9). Delete Rhythm Pattern: