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

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

You can change the setting of reference pitch here.

You can change the setting of tuning set here.

You can turn to Manual-Mode by tapping a few times.

The sound of your bass is too low against target pitch. Wind up the peg slowly that until the needle points to "0".

The sound of your bass is low against target pitch. Wind up the peg slowly that until the needle points to "0".

The sound of your bass is too high against target pitch. Loosen the peg in order to that the needle is to come to the left of "0" once back, and wind up the peg slowly that until the needle points to "0".

The sound of bass is high against target pitch. Loosen the peg in order to that the needle is to come to the left of "0" once back, and wind up the peg slowly that until the needle points to "0".

Note.
When the sound of the bass is higher than the target pitch (or gone to the right side over "0"), loosen the strings once. You make the needle that matches to "0" by while winding up. By doing so, the string does not loose easily, and the pitch will stable.

Since the needle is pointing to "0", the pitch is in tune with target.

IMPORTANT.
Octave higher from target pitch, and in pitch of octave lower, TN-1B was made needle to point to 0. From this, TN-1B displaying "too high", and pitch of your bass is further increased, the meter will be displays 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.

In all strings, the meter needle to the point to 0, 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.

(1). Open "Beat Patterns" and tap "Edit".

(2). A pattern list is to be edit-mode. Tap green (+)button that you make a choice.

(3). A new pattern is created.

(4). Tap "Done", edit-mode is finished.

(1). Open "Beat Patterns", and flick pattern left that you want to delete.

(2). [Delete] Button appears, and tap it.

(1). Version up to latest TN-1B(or TN-1G) each iPhones.
(2). Make sure that each iPhone Wi-Fi and Bluetooth enabled.

(3). Enables AirDrop both iPhones.
Swipe up from the bottom of the screen, open Control Center.

(4). Taro starts TN-1B, and choose beat pattern that Taro want to send.
And unlock screen of the Ichiro's iPhone.

(5). Tap share button on Taro's iPhone, and choose "Share beat pattern by AirDrop".

(6). Ichiro's iPhone is found, the icon will appear, tap it.

(7). Message is appearing on Ichiro's iPhone, and choose "Accept".

(8). Ichiro can choose which app to open data with. Select "TN-1B"(or "TN-1G").

(9). Start TN-1B(or TN-1G), and the message is shown.

(10). Taro's beat pattern has been added.

(11). Recommended that for security reasons, each iPhone AirDrop to disable.

Note.
Check the version of TN-1B when the error is displayed.

(1). Version up to latest TN-1B(or TN-1G) each iPhones.
(2). Taro starts TN-1B, and choose beat pattern that Taro want to send.

(3). Tap share button on Taro's iPhone, and choose "Share beat pattern by email".

(4). New message screen of email with attachment file appears.
Please enter the address and subject.

(5). Ichiro received email.

(6). Long tap the attachment file.

(7). Ichiro can select apps to open attachments, choose "TN-1B"(or "TN-1G").

(8). Start TN-1B(or TN-1G), and the message is shown.

(9). Taro's beat pattern has been added.

Note.
Check the version of TN-1B when the error is displayed.

(1). pitch meter:
Target pitch is the point of zero.

(2). information of note:
Display tuning set name and frequency of target note.

(3). string button:
From left, E, A, D, G-string.
On Auto-mode, these buttons becomes indicator of detecting string.

(4). tuning fork:
Sound is when you tap. The sound will stop when you tap again.

(5). Auto-mode button:

(6). settings button:
It will transition to Settings Screen.

(7). beat pattern list button:
It will transition to Beat Patterns Screen.

(8). trial button:
By viewing a short video-ad, you can use paid-features temporary.
Please try it!!

Note.
This feature may not be available, depending on the region where you live.
This feature may not be available temporary, depending on communication environment or ads is out of stock.
Please acknowledge it.

(9). help button:
This page you are looking at now is displayed.

(1). tuning sets:

(2). lower string:
Set the pitch of the lower string on 5 or 6-string bass.

(3). higher string:
Set the pitch of the higher string on 5 or 6-string bass.

(4). reference pitch:
Set the reference pitch of A.

(5). note notation:
You can change language of note notation.

(6). change string by close a hand:
In Manual-mode, switch target string by press string-button.
But, when this switch is turned on, it is possible to select right side button by moving your hand closer to the device.

(7). Rate TN-1B in App Store:
We are looking forward to your comments about this app. Thank you.

(8). remove ads:
It will transition to Purchase Screen, you can buy "Remove Ads" function(In-App Purchase).

(9). done button:
Save settings, and back to main screen.

(1). back button:

(2). edit button:
It changes list to edit mode.

(3). import button:
This button will import data that exported by other apps.

(1). beat indicator:
You have bought "Remove Ads", this indicator appears.

(2). name:

(3). beat selector:
You can select the number of items in a beat.

(4). tempo(BPM):

(5). start/stop:

(6). length of pattern:
You can set the length of a beat-pattern cycle between 4 and 32.

(7). beat indicator:
Beat item is progress by number of beat selector.

(8). tracks:
From the top is closed-hihat, half-closed-hihat, snare drum, bass drum. You have bought "Remove Ads", track of half-closed-hihat can be changed.

(10). tempo button:
You can change the tempo(BPM).