# I4 Client

> I4 Client (iPhone/iPad app by Sumatra Software b.v..)

- Source: https://appshunter.io/ios/app/i4-client/id702923464 (this page in markdown: same URL + `.md`)
- Developer: [Sumatra Software b.v.](https://appshunter.io/developer/702923467)
- Category: Business
- Price: Free
- Age rating: 4+
- Requires: iOS 15.6 · 5 MB
- Languages: Dutch, English
- Released: 2013-10-01
- Data updated: 2026-06-01
- User reviews in markdown: https://appshunter.io/ios/app/i4-client/id702923464/reviews.md

## What is I4 Client?

Sumatra Client voor iOS


## Version history (last 5 releases)

### 6.43 — 2025-08-28

Bug fix: stuck after loginscreen when connecting to 5.4 server. Now fixed if connecting to server of build 5.4.1159 or later

### 5.02 — 2019-08-13

- Bug fix: A picture component hosting 3rd-party content with a POST-request would cause a crash.
- Bug fix: Trying a URL containing invalid characters in the login screen would cause a crash.
- Bug fix: Error message when trying to log in with the wrong password has been adjusted to reflect that.

### 5.01 — 2018-11-13

Bug fix. Windows authentication on non-standard port.

### 5 — 2018-06-26

- Geheel nieuwe look-and-feel
- Automatisch inloggen
- Excel, Pdf en Word bestanden kunnen nu met een externe app worden geopend

### 4.04 — 2017-10-10

- Ondersteuning voor iOS 11.
- Probleem verholpen met server detectie via reverse proxy.
- Gebruik van http weer toegestaan.

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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 2026-06-01.*