# EnvLogger Viewer — Simplified logger programming

> NFC-based application for configuring and retrieving data from temperature loggers. (iPhone/iPad app by Electricblue, CRL.)

- Source: https://appshunter.io/ios/app/envlogger-viewer/id1490568570 (this page in markdown: same URL + `.md`)
- Developer: [Electricblue, CRL](https://appshunter.io/developer/1490568569)
- Category: Utilities, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 14.0 · 2 MB
- Languages: American English
- Released: 2019-12-11
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/envlogger-viewer/id1490568570/reviews.md

## What is EnvLogger Viewer?

This application is used to communicate with EnvLoggers via NFC (near field communication).

Users can configure missions, plot mission data and save them as CSV files to the iPhone's memory. They can also instantaneously share data. Data are saved as CSV files, which are human-readable and easily imported into R, MatLab, Excel or similar.

EnvLoggers are contactless miniaturized temperature loggers. Their main features are:

1. They are sturdy, waterproof, and resistant to UV. Can withstand depths exceeding 500 meters.

2. Their battery life spans over 2 years (sampling at every hour).

3. The memory stores between 10k readings @ 0.1 ºC resolution or 12k readings @ 0.5 ºC resolution. Typically, 14k readings @ 0.1 ºC resolution and 17k @ 0.5 ºC resolution. For reference, 1 year of data at hourly resolution requires ~9K readings. Memory is non-volatile, meaning that data can be retrieved even after battery depletion.

4. The clock drift is of 50 ppm at most.

5. The temperature resolution is of 0.1 ºC. Precision and accuracy are of at least 0.2 ºC.

6. Because the NFC allows for communication at a range of a few cm, it is possible to embed the loggers in the rock and still communicate with them.

Refer to www.electricblue.eu for more information.

Note: EnvLogger Viewer needs NFC, thus only runs on iPhone 7 or later.

## Key features

- NFC communication with EnvLoggers
- Configure missions
- Plot mission data
- Save data as CSV
- Instantaneous data sharing
- Human-readable CSV format

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/envlogger-viewer/id1490568570/reviews.md

### 2/5 — Env logger stuck on loading

*2023-12-12*

I’ve tried to connect the 27mm temperature EnvLogger to this app but it’s stuck on ‘Loading’. I’ve tried this with 10 different buttons. Version number is EnvLogger 2.4

## Frequently asked questions about EnvLogger Viewer

### What devices does EnvLogger Viewer support?

EnvLogger Viewer is designed to run on iPhones and iPods. It requires NFC capabilities, so it is compatible with iPhone 7 or later models.

### How does EnvLogger Viewer handle data?

Data collected by EnvLoggers is saved as human-readable CSV files. These files can be easily imported into popular analysis software like R, MatLab, or Excel for further processing and visualization.

### What are the key features of EnvLoggers themselves?

EnvLoggers are sturdy, waterproof, and UV-resistant, capable of withstanding depths over 500 meters. They offer a battery life of over 2 years with hourly sampling and store between 10k to 17k readings depending on resolution.

### Can I use EnvLogger Viewer offline?

While the app requires NFC for communication, the data logging and saving functionalities can be performed offline once the connection to the EnvLogger is established.

### How often is EnvLogger Viewer updated?

The latest version of EnvLogger Viewer is 1.22, last updated on November 1, 2025. Updates typically focus on improving compatibility and adding minor enhancements.

### Does EnvLogger Viewer have ads?

No, EnvLogger Viewer does not contain advertisements. It is a free application designed for utility purposes without any ad interruptions.

### What is the age rating for EnvLogger Viewer?

EnvLogger Viewer has an age rating of 4+. This indicates it is suitable for users of all ages and does not contain any mature content.

### Where can I find more information about EnvLoggers?

For comprehensive details regarding EnvLoggers, including their technical specifications and applications, please refer to the official website at www.electricblue.eu.

## Version history (last 5 releases)

### 1.22 — 2025-11-01

Bug Fix TH3.1

### 1.21 — 2025-09-17

minor fix in graphic view

### 1.20 — 2025-09-12

Added support for TH2.5 and TH3.0 humidity loggers

### 1.18 — 2022-07-11

Bug fixs

### 1.17 — 2022-02-25

Added EnvLogger T7.3 support

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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.*