# T2RC — GPS Rally Computer

> Rally computer app for roadbook navigation in rally raid races. (iPhone/iPad app by TETSUSHI YAMAGUCHI.)

- Source: https://appshunter.io/ios/app/t2rc/id1391502921 (this page in markdown: same URL + `.md`)
- Developer: [TETSUSHI YAMAGUCHI](https://appshunter.io/developer/1391502920)
- Category: Navigation
- Price: $19.99 (on sale, was $22.99)
- Age rating: 4+
- Requires: iOS 14.0 · 5 MB
- Languages: American English
- Released: 2018-11-11
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/t2rc/id1391502921/reviews.md

## What is T2RC?

T2RC is a rally computer application made for rally raid race using roadbook. Please use it as a backup for dedicated machines.

function
- Tripmeter
- Compass (CAP)
- Altimeter
- Speedmeter
- Battery level
- Clock
- Reset Button
- Reverse mode
- Trip Editor
- Supports game controller

Disclaimer
The rally computer function (tripmeter and direction measurement instrument) is not a substitute for reading using dedicated GPS navigation or exclusive trip meter. Please use this function only as an aid to those functions. Position information acquired from GPS always includes errors that depend on conditions such as topography, satellite position, terminal performance, etc. The developers of this application are not responsible for accidents and troubles that occurred while using this application, as well as the injury / damage. This application and each function may be abolished without a previous notice in the future.

## Key features

- Tripmeter
- Compass (CAP)
- Altimeter
- Speedmeter
- Battery level indicator
- Clock
- Supports game controller

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/t2rc/id1391502921/reviews.md

### 4/5 — 便利です

*2025-02-20, version 6.0.2*

バイクでラリーのイベントへ参加するたびにお世話になってます
ほぼ狂いなく区間距離が計測できて便利です
最近はバイクにもディスプレイオーディオが増えているので、Carplayに対応してくれたら完璧だと思います

### 3/5 — 数分で落ちる

*2024-05-19, version 6.0.2*

iPhone7で使っているからなのか数分でブラックアウトその後ロック状態になるのでほぼ使えませんでした
前のバージョンだとブラックアウトする事なく、走った場所も分かりよかったんですけどね

iPhone 15proだとタテだと右側が切れてkmや時計の一桁が見えません

### 5/5 — 改善のご報告

*2024-03-05, version 5.5.6*

画面表示の不具合をレポートさせていただきました。
その後デベロッパーさんから改善策をご教示頂き試してみた所、見事に治りました。
ありがとうございます。
ボタンの色に関しては最初から『コントラストを上げる』がOFFになっていたので問題はありません。

### 4/5 — TORIP EDITORの入力に改善の余地

*2024-02-11, version 5.5.3*

秀逸な機能が気に入り数年前より利用してます 今回のバージョンアップでさらに視認性や操作性が向上して大満足の一方で、TORIP EDITORは数字しか入力しないはずが文字列も打ち込めてしまいます 最初ら数字入力ボードになっていると切り替えの手間がなくて更に良いです

### 5/5 — ニッチなアプリだけど

*2020-10-23, version 4.0.2*

ラリコン買うほど余裕ないし、マップホルダーは自作だし、それでもこのアプリがあればコマ図ツーが3倍楽しめる。
ダークモードとか夜間表示モードとかあると嬉しいな。

## Frequently asked questions about T2RC

### What is T2RC used for?

T2RC is a rally computer application designed to assist with roadbook navigation during rally raid races. It provides essential tools like a tripmeter, compass, and speedmeter.

### Is T2RC a primary navigation device?

No, T2RC is intended to be used as a backup for dedicated GPS navigation or exclusive trip meters. Position information from GPS can have errors due to various conditions.

### What navigation features does T2RC offer?

T2RC includes a tripmeter, compass (CAP), altimeter, speedmeter, battery level indicator, and clock. It also features a reset button and reverse mode for the tripmeter.

### Can T2RC be controlled with a game controller?

Yes, T2RC supports game controllers, which can be a convenient way to interact with its functions during a race.

### What is the price of T2RC?

T2RC is a paid application priced at $19.99. There are no in-app purchases or subscriptions mentioned.

### What devices is T2RC compatible with?

T2RC is available for iPhone, iPad, and iPod devices. It has an age rating of 4+.

### How often is T2RC updated?

The latest version of T2RC is 6.0.2, last updated on April 18, 2024. This indicates relatively frequent updates to the application.

### Does T2RC have ads?

No, T2RC does not contain advertisements. It is a paid application with a one-time purchase price.

## Version history (last 5 releases)

### 6.0.2 — 2024-04-18

Fixes
- Adjusted color tone

### 6.0.1 — 2024-04-17

Fixes
- Changed so that you can switch between single and double by long pressing the CAP display

### 5.9.1 — 2024-04-17

Fixes
- Supports long press of button to increase/decrease trip meter

### 5.8.1 — 2024-04-17

Fixes
- Changed CAP display to automatically switch between GNSS/MAGNETIC at 2km/h

### 5.6.0 — 2024-04-11

Fixes
- Changed CAP display to two: azimuth (GNSS) and magnetic sensor (magnetic).

## Apps similar to T2RC

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [DX500RALLY.SHOT](https://appshunter.io/ios/app/dx500rallyshot/id891959877) | — | $28.99 | Navigation |
| [コマサポ](https://appshunter.io/ios/app/id6747275572) | — | Free | Navigation |
| [Airplane HUD](https://appshunter.io/ios/app/airplane-hud/id6446793035) | 3.0 (2) | Free | Navigation |
| [Rally Blitz Navigator Pro](https://appshunter.io/ios/app/rally-blitz-navigator-pro/id1195455638) | 4.8 (5) | Free | Navigation |
| [Rally Roadbook Reader](https://appshunter.io/ios/app/rally-roadbook-reader/id1440988194) | 4.4 (5) | Free | Navigation |
| [コマツアー](https://appshunter.io/ios/app/id1580547880) | — | Free | Navigation |

## More apps by TETSUSHI YAMAGUCHI

- [Roadbook Rally](https://appshunter.io/ios/app/roadbook-rally/id6448408474)

All apps by TETSUSHI YAMAGUCHI: https://appshunter.io/developer/1391502920

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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 2026-08-24.*