# BRAIN BLACK

> Motorcycle GPS speedometer with bank and slope angle display. (iPhone/iPad app by KJ-FORCE CO.,LTD..)

- Source: https://appshunter.io/ios/app/brain-black/id902384789 (this page in markdown: same URL + `.md`)
- Developer: [KJ-FORCE CO.,LTD.](https://appshunter.io/developer/902384792)
- Category: Entertainment, Sports
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 7.0 · 42 MB
- Languages: American English
- Released: 2014-07-30
- Data updated: 2026-07-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/brain-black/id902384789/reviews.md

## What is BRAIN BLACK?

BRAIN-digital meter for riders- はバイクユーザーへ向けたGPSスピードメーターアプリです。
あなたのiPhoneをマシン取り付けることで、サブメーターとして、また今までのメーターには無かったバンク角やスロープ角などを表示することで新たなライディングスタイルを確立できるでしょう。

メインメーターには、km/hとmphの切替可能なスピードメーター、左側にはバンク角、右側にはスロープ角を表示します。
画面上左上のリセットボタンを押すことで、バンク角とスロープ角がリセットされます。マシンを垂直にし、固定位置を決定した状態でリセットボタンを押すことで、正しい数値を表示しすることができます。
縦にスワイプすることにより、メーターデザインが切り替わります。お好みのデザインメーターをお選びください。
その他詳しい説明等はサポートサイトをご覧ください。

BRAIN-digital meter for riders- is the GPS meter for motorcycle riders.

Only equpping your iPhone to your bike, it works as sub meter and further more, works as bank and slope angle meter. This leads your riding style to new paradgim you ever experienced. 
Main meter has speed meter that you can change the unit both km/h and mph. On the left side, bank angle is displayed and on the right side, slope angle is displayed. 
Upper left on the display, there is the Reset button. You can reset the bank and slope angle by pressing this button. 
In order to display bank and slope angle precisely, place your bike upright and fix the location of your iPhone, then press reset button. 
Swiping display vertically, you can change the design of the meter. You can choose the design as you like.
For more detail, please reffer to our support web site. 



- 注意事項 - 
・交通事故防止のため、運転中本製品の操作は絶対に行わないでください。(本製品使用中のいかなる事故について、当方は一切の責任を負いません)
・ご使用の際は、位置情報サービスをONにしてください。
・機内モードがONの場合、Wifiを使用した場合でも、挙動が乱れることがあります。
・GPS取得による速度表示のため、正確な速度表示はできませんので、ご了承ください。
・電波状況により、メーター針の挙動が乱れることがあります。
・CBR250RRレプリカでのタコメーターは速度に応じてアニメーションするものであり、 回転数を表示しておりません。
・CBR250RRレプリカではmph表示に切替できません。

- NOTICE - 
・Please DO NOT manipulate this application while you are riding in order to avoid an accident. (We are NOT responsible for any accident.)
・When using, set the location information service "ON".
・In case Airplane mode is "ON", this application may show unexpected behavior even using Wi-Fi.
・This application shows the speed calculated with GPS position and the speed displayed is NOT as accurate as original speed meter. 
・Due to the reception, indicator may show incorrect values.
・Tachometer of CBR250RR version only shows the animation depending on the speed and does NOT show the real rev.
・CBR250RR version does NOT show the speed in "mph".

## Key features

- GPS speedometer
- Bank angle display
- Slope angle display
- km/h and mph units
- Customizable meter designs
- Speedometer reset function


## Frequently asked questions about BRAIN BLACK

### What is BRAIN BLACK?

BRAIN BLACK is a GPS speedometer application designed for motorcycle riders. It displays your speed, bank angle, and slope angle, offering a new perspective on your riding style.

### Can I change the speed units in BRAIN BLACK?

Yes, BRAIN BLACK allows you to switch between kilometers per hour (km/h) and miles per hour (mph) for the speed display, catering to different regional preferences.

### How do I reset the angle measurements in BRAIN BLACK?

To reset the bank and slope angles, simply press the reset button located on the upper left of the display. For accurate readings, ensure your motorcycle is upright and the iPhone's position is fixed before resetting.

### Does BRAIN BLACK offer different visual styles?

Yes, you can change the meter design by swiping vertically on the display. This allows you to choose a visual style that best suits your preferences.

### What devices is BRAIN BLACK compatible with?

BRAIN BLACK is designed for iPhone and iPod devices, requiring location services to be enabled for its GPS functionality.

### Is BRAIN BLACK safe to use while riding?

The developers strongly advise against operating BRAIN BLACK while riding to prevent accidents. They are not responsible for any accidents that may occur during its use.

### How accurate is the speed display in BRAIN BLACK?

The speed is displayed based on GPS position, which may not be as accurate as the original speedometer. Additionally, signal reception can affect the meter's behavior.

### Does BRAIN BLACK have ads?

BRAIN BLACK is free to use and does not contain advertisements.

## Version history (last 4 releases)

### 1.2.0 — 2014-10-20

This app has been updated by Apple to display the Apple Watch app icon.

Add new design meter.

### 1.1.0 — 2014-10-03

Adding new design wall.
Bug fixes.

### 1.0.1 — 2014-08-31

Optimization of speed acquisition method.
Performance improvements and bug fixes.

### 1.0.0 — 2014-07-30

No release notes.

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## More apps by KJ-FORCE CO.,LTD.

- [CNC SCREEN correspond to FANUC](https://appshunter.io/ios/app/cnc-screen-correspond-to-fanuc/id1329110087)

All apps by KJ-FORCE CO.,LTD.: https://appshunter.io/developer/902384792

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-04.*