# CheX（チェクロス）

> Construction document viewer with annotation and sharing for field teams. (iPhone/iPad app by YSL Solution Co., Ltd..)

- Source: https://appshunter.io/ios/app/chex/id1289611667 (this page in markdown: same URL + `.md`)
- Developer: [YSL Solution Co., Ltd.](https://appshunter.io/developer/404131444)
- Category: Business, Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 69 MB
- Languages: American English, Japanese, Chinese (Simplified, China)
- Released: 2017-12-08
- Data updated: 2026-08-26
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/chex/id1289611667/reviews.md

## What is CheX（チェクロス）?

CheX is an app that lets you browse through construction documents quickly. 
You can record hand-written memos and photos onto your blueprints/manuals, and share them with others.
Use CheX to organize/share information and keep your field up to date.

[Features]
- High speed viewing:
If you display a blueprint with another app, it takes time.
In CheX, Stress-free display detailed blueprints.
- Compatible with office documents:
Construction instructions, reports and schedules can be displayed the same way they are on a computer, without destroying the layout.
- Sharing notes:
By using handwritten notes and text notes, you can convey information easily and clearly with the note function.
- Sharing pictures:
Select a location on the blueprint, take a picture on the scene and save it right there. 
you can share pictures of the construction condition as well. 
- Sharing on Windows/Mac:
You can see recorded notes and photos from both Windows/Mac.
- User restriction:
You can set various permissions (browse/edit) for each user using Windows/Mac clients.

* By using CheX, manage big blueprints and related documents with CheX.
You can easily carry them around.
* You will never lose your hand-written notes again.
* Place your blueprints on a server specifically made for that.
This allows you to keep all plans up to date and share them.
No more errors caused by old blueprints. 

[For Using]
* To use CheX, you need to pay a fee and create a CheX user ID.
* If you already have an user ID, you can continue to use the app with no extra fees.

[Contact Information]
For consultations or questions about CheX service, please contact us from "Contact" of Sapport Site below.

## Key features

- High-speed blueprint viewing
- Annotate with handwritten notes
- Attach photos to documents
- Cross-platform sharing (Windows/Mac)
- User permission controls
- Organize large document sets

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 1 month (30 days) | $28.99 | one-time |


## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/chex/id1289611667/reviews.md

### 5/5 — ver3.52.3

*2024-05-08*

使いやすい。
昔よりもリファインがされており、誰でも使える。

### 1/5 — 遅い

*2023-04-24*

ダウンロードが遅すぎる

### 2/5 — BOX

*2022-07-18*

BOXとの連動で不具合が起きてます。

### 1/5 — アイコンが動く

*2022-04-20*

スタンプやピンが後日開くと移動している。
自分で付けたものはなんとなくわかりが他人が付けたピンは何用かわからなくなる。
図面で詳細のためにスタンプやピン刺してるのに意味がない。

**Developer response:** いつもCheXをご利用いただきまして、ありがとうございます。
この度はご不便をおかけして申し訳ございません。
製品の不具合の可能性も踏まえた詳細な調査を実施させていただきたく、下記よりCheXサポートまでご連絡いただけますでしょうか。
https://chex.jp/inquiry
よろしくお願いいたします。

### 1/5 — ver.3.16.0について

*2020-06-12*

アップデートにより、以前の様な滑らかな曲線を描くことが不可能になっており、手書きの文字が著しく見辛くなっている。この不具合のせいで、最早まともなメモとして機能していないまである。
また、以前から気になっている点として線の太さの変更に対して1ずつ変更できる様なボタンを作ってはどうかと思う。現状は左右に太さを操作するボタンをドラッグするか、数値を打ち込むかという二種類しかないため、やや使い勝手が悪いと言わざるを得ない。

**Developer response:** いつもCheXをご利用頂きまして、ありがとうございます。
この度はご迷惑をおかけしてしまい、誠に申し訳ございません。

現在最優先で対応しており、近日中に完了する予定でございます。
大変恐れ入りますが、今しばらくお待ち頂きます様お願いいたします。

お客様には多大なご迷惑をお掛け致しました事、重ねて深くお詫び申し上げます。

## Frequently asked questions about CheX（チェクロス）

### What is CheX used for?

CheX is used to quickly view construction documents, add handwritten notes and photos directly onto blueprints, and share this information with others. It helps organize and update field information efficiently.

### How do I use CheX?

To use CheX, you need to pay a fee and create a CheX user ID. If you already have an user ID, you can continue to use the app with no extra fees.

### Can I share my annotated blueprints with others?

Yes, you can share your annotated blueprints with others. Notes and photos can be easily conveyed and shared, ensuring everyone is up to date.

### Can I access my CheX documents on a computer?

Yes, you can see recorded notes and photos from both Windows and Mac computers, allowing for seamless cross-platform access.

### Does CheX have ads?

No, CheX does not contain advertisements. The app is free to use after initial setup and does not display ads.

### What devices is CheX compatible with?

CheX is compatible with iPhone and iPad devices, supporting iOS.

### How often is CheX updated?

The latest version of CheX is 3.67.0, last updated on August 16, 2026. Updates are released periodically to improve functionality and reliability.

### Can I control who edits my documents in CheX?

Yes, you can set various permissions, including browse and edit access, for each user through the Windows and Mac clients.

## Version history (last 5 releases)

### 3.67.1 — 2026-08-24

◯ Fix
- Minor modifications were made.

### 3.67.0 — 2026-08-16

◯ Fix
- Minor modifications were made.

### 3.66.0 — 2026-07-05

◯ New
- We've added a photo list display feature to the left side of the Photos tab on the pin details screen.
- We've added a photo preview feature to the album's photo-taking screen in the Album feature.
- We've added a reset feature for custom sorting orders in the Album feature.

### 3.65.1 — 2026-06-29

○ Fix
- Operation has been improved.

### 3.65.0 — 2026-06-08

○ New
・Starting with this version, IFC files exported from Tfas now use GUIDs.

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## More apps by YSL Solution Co., Ltd.

- [Brazil Training (ブラジル トレーニング)](https://appshunter.io/ios/app/brazil-training/id541016981)
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- [AQuick](https://appshunter.io/ios/app/aquick/id1437868590)
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- [FalconAS](https://appshunter.io/ios/app/falconas/id1519942482)

All apps by YSL Solution Co., Ltd.: https://appshunter.io/developer/404131444

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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 2026-08-26.*