# E4 Flex — Manage E4 Flex with BLE

> BLE interface for E4 Flex reader configuration and testing by field technicians. (iPhone/iPad app by Paul Hamel.)

- Source: https://appshunter.io/ios/app/e4-flex/id1593079643 (this page in markdown: same URL + `.md`)
- Developer: [Paul Hamel](https://appshunter.io/developer/1593079645)
- Category: Productivity
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 13.1 · 1 MB
- Languages: American English
- Released: 2022-05-25
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/e4-flex/id1593079643/reviews.md

## What is E4 Flex?

The E4 Flex allows users to find and connect to E4 Flex readers in close proximity using the BLE interface.  The user can send commands and receive responses as if they were connected  using the typical serial or network connect.
This app is a new tool for field technicians to configure and test the E4 Flex Reader.

## Key features

- Connect to E4 Flex readers via BLE
- Send commands to readers
- Receive responses from readers
- Configure E4 Flex readers
- Test E4 Flex readers


## Frequently asked questions about E4 Flex

### What is E4 Flex used for?

E4 Flex is used by field technicians to connect to and manage E4 Flex readers using Bluetooth Low Energy. It allows for sending commands and receiving responses to configure and test the readers.

### Is E4 Flex free to use?

Yes, E4 Flex is available for free. The app is listed as free with no mention of in-app purchases or subscription fees.

### What devices support E4 Flex?

E4 Flex supports iPhone and iPod devices. It is designed for mobile use in the field.

### How often is E4 Flex updated?

The latest version of E4 Flex is 1.3.1, last updated on December 31, 2025. While specific update frequency isn't detailed, this indicates ongoing development.

### What is the age rating for E4 Flex?

E4 Flex has an age rating of 4+. This suggests it is suitable for a wide range of users and does not contain mature content.

### Does E4 Flex have ads?

No, E4 Flex does not contain advertisements. The app is free and does not have ads, ensuring an uninterrupted user experience.

### How does E4 Flex connect to readers?

E4 Flex connects to E4 Flex readers using the Bluetooth Low Energy (BLE) interface. This allows for wireless communication and management of the readers.

### What kind of commands can be sent with E4 Flex?

E4 Flex allows users to send commands to E4 Flex readers as if they were connected via typical serial or network connections. This enables comprehensive configuration and testing.

## Version history (last 4 releases)

### 1.3.1 — 2025-12-31

Bumped the version to address the new age verification requirements in the App Store.

### 1.2.1 — 2024-03-27

Modified method of displaying devices and expiring devices and increased the sensitivity of the app to detect E4 Flex devices.

### 1.1.1 — 2022-07-14

Corrected a few cosmetic problems in the EULA.
Changed the color of the links in the EULA so they are more visible.
Corrected an bad link in the EULA.

### 1.0.7 — 2022-05-25

No release notes.

## Apps similar to E4 Flex

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [The Clock: Alarm Clock & Timer](https://appshunter.io/ios/app/the-clock-alarm-clock-and-timer/id6504418374) | 3.0 (1) | Free | Productivity |
| [Nextail](https://appshunter.io/ios/app/nextail/id1626099346) | — | Free | Productivity |
| [Convert - Unit and Currency](https://appshunter.io/ios/app/convert-unit-and-currency/id884044389) | 4.8 (123) | Free | Productivity |
| [CalendarScan](https://appshunter.io/ios/app/calendarscan/id6475249171) | 3.7 (15) | Free | Productivity |
| [Telerik .NET MAUI Controls](https://appshunter.io/ios/app/telerik-net-maui-controls/id1626276647) | 5.0 (1) | Free | Productivity |
| [Xerox DocuShare Flex](https://appshunter.io/ios/app/xerox-docushare-flex/id1437677316) | 5.0 (3) | Free | Productivity |

---

*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.*