# OPEN EX

> OPEN EX (iPhone/iPad app by RIK Corporation.)

- Source: https://appshunter.io/ios/app/open-ex/id6473357021 (this page in markdown: same URL + `.md`)
- Developer: [RIK Corporation](https://appshunter.io/developer/507134227)
- Category: Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 15.0 · 44 MB
- Languages: American English
- Released: 2023-12-19
- Data updated: 2026-08-31
- User reviews in markdown: https://appshunter.io/ios/app/open-ex/id6473357021/reviews.md

## What is OPEN EX?

OPEN EX ビューワーとは

OPEN EXシステムを通して、エクステリア工事の物件情報や様々なファイルを共有できるアプリです。
 
数が多くて整理の大変な図面や写真ファイルをクラウド上で一元管理することで、ミスやロスを削減しましょう！
OPEN EX ビューワーがあれば、アプリからファイルを直接アップロードして共有することができます。
 
最新の図面や仕様書なども、クラウドでスムーズに最新の内容を共有する事ができます。
PDFや画像ファイルだけでなく、BIMxファイル（パースと図面が完全連動）も簡単に開く事ができ、施行着手までのスピードもUPします。


## Version history (last 5 releases)

### 1.3.9 — 2026-08-19

Fix errors in the Order section.

### 1.3.8 — 2026-07-07

This release introduces support for emoji reactions in chat conversations

### 1.3.7 — 2026-06-09

Fixed image swiping and PDF zooming issues on iOS.

### 1.3.6 — 2026-04-14

In this version, we improved app stability and performance.  
Thank you for using our app!

### 1.3.5 — 2026-03-24

In this version, we improved app stability and performance.  
Thank you for using our app!

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## More apps by RIK Corporation

- [ViewSTYLE Touch](https://appshunter.io/ios/app/viewstyle-touch/id557858548)
- [RIKフォトタッチ](https://appshunter.io/ios/app/rik/id1459969081)
- [ROX Mobile](https://appshunter.io/ios/app/rox-mobile/id6752290247)

All apps by RIK Corporation: https://appshunter.io/developer/507134227

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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 2026-08-31.*