# Conn.Logger

> Conn.Logger (iPhone/iPad app by MRS Electronic Gmbh & Co. KG.)

- Source: https://appshunter.io/ios/app/connlogger/id1584295929 (this page in markdown: same URL + `.md`)
- Developer: [MRS Electronic Gmbh & Co. KG](https://appshunter.io/developer/1584295931)
- Category: Utilities, Productivity
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 9 MB
- Languages: American English
- Released: 2023-02-23
- Data updated: 2026-08-26
- User reviews in markdown: https://appshunter.io/ios/app/connlogger/id1584295929/reviews.md

## What is Conn.Logger?

Conn.Logger is the control application for the connection, configuration, data access, and maintenance of the ConnectedLogger device from MRS Electronic.

What is ConnectedLogger device?

	
ConnectedLogger is an ECE and RED certified smart data logging device. It captures and stores data from multiple buses of your machine, including CAN and LIN. This data can be stored in the internal flash memory of the ConnectedLogger device and/or sent to our cloud server.

Main features of ConnectedLogger device

* Data transfer - BLE to transfer data from vehicles to the Conn.Logger application and LTE or Wi-Fi from application to the backend server.
* Security - Secure data connection from ConnectedLogger to cloud via tokenization and usage of HTTPS and MQTTs protocols.
* Protection - IP6K8 protection class for water and dust resistance.
* Easy installation - Compact size and light weight for convenient installation.

Why would you want to install the Conn.Logger application?


* Interactive UI - Provides an interactive UI to control your ConnectedLogger device. 
* Offline data capturing - Captures your data even when the internet isn't accessible.
* Data transmission - Transmits your data from ConnectedLogger device to the cloud server.
* Configuration - Assists you in configuring the settings of your ConnectedLogger device.
* Data access - Accesses data stored on the ConnectedLogger device.
* Live data - Displays your vehicle's live data such as its CAN/Analog, Events, and GPS information.


## Version history (last 5 releases)

### 5.7.0 — 2026-08-24

New feature:
Root certificates can now be loaded from the server for both HTTP and MQTT configs

Fixes:
Fixed a crash when adding a Wi-Fi network and reopening the Wi-Fi screen
Added validation for Live Data intervals.
Fixed CAN ID update in definitions
Removed the unused/redundant Analog Data setting from the Intervals section

### 5.6.5 — 2026-04-10

- New connectivity enhancements and smarter warning alerts  
- Expanded background event notifications  
- Refined support for various communication protocols  
- Simplified sensor settings interface 
- Fixed validation checks for legacy configurations  
- Improved network reliability and reduced connection timeouts 
- Polished UI for real‑time event alerts  
- Updated configuration handling for smoother performance

### 5.5.0 — 2025-10-14

### Added
- Add subscription to flash data topics (logs, events, gps) and send respective commands
- Support added for API v2 to fetch file ID and upload file using the retrieved ID

### Fixed 
- Converted interval storage size from MB to KB based on MQTT message.
- Sent an empty MQTT definition configuration command to the logger.
- Fixed the can configuration unit test parsing issues
- Send definition and events configuration commands on initial server connection
- Naming convention needs to be updated in intervals screen
- Update period validation in events configuration

### 5.4.0 — 2025-03-03

Added support for the Gateway Logger.
Fixed minor bugs and made performance improvements.

### 3.5 — 2024-12-01

J1939 Protocol Support: Added compatibility with the J1939 vehicle protocol for broader device integration.
Enhanced Server Settings: Improved server settings for smoother and more reliable online connections.
UI Enhancements & Bug Fixes: Polished the user interface and resolved various bugs for a more stable and enjoyable experience.

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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.*