# Blue2 Reader

> Mobile app for Emerson Cooper-Atkins Blue2 family of devices to read temperature. (iPhone/iPad app by Cooper-Atkins Corporation.)

- Source: https://appshunter.io/ios/app/blue2-reader/id940697062 (this page in markdown: same URL + `.md`)
- Developer: [Cooper-Atkins Corporation](https://appshunter.io/developer/940697061)
- Category: Utilities
- Price: Free
- Rating: 2.60/5 from 5 App Store ratings
- Age rating: 4+
- Requires: iOS 8.0 · 59 MB
- Languages: Japanese
- Released: 2014-12-01
- Data updated: 2026-06-11
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/blue2-reader/id940697062/reviews.md

## What is Blue2 Reader?

Blue2 Reader - the app that lets you unleash the capabilities of Emerson Cooper-Atkins Blue2 family of devices!

Wirelessly capture temperature readings from any type K thermocouple probe - right from your mobile device!

*Requires a bluetooth-capable device from Emerson Cooper-Atkins (Blue2, Blue2-D, Blue2-DIR, Multi-Function Thermometer) and a type K thermocouple probe (purchased separately).

- Connects with Emerson Cooper-Atkins line of Blue2 and MFT instruments using Bluetooth Low Energy for fast, robust connections.
- Continuously displays accurate temperature readings that can be updated: every 1 to 5 seconds for Blue2, and every 1 to 60 seconds for Blue2-D and Blue2-DIR.
- Quickly toggle between Fahrenheit and Celsius for the Blue2 instrument; this can be done directly from the Blue2-D, Blue2-DIR, and MFT instruments.
- Capture temperature readings with the touch of a button - from the Blue2 instruments or the mobile device.
- Conserve battery life with user-selectable auto shut off (after 1 to 30 minutes of inactivity on the Blue2 and after 1-60 minutes on the Blue2-D, Blue2-DIR, and MFT).
- Displays the charge level of the Blue2 instruments - no guesswork!

Blue2 Reader is intended to demonstrate the capabilities of Emerson Cooper-Atkins Blue2 devices for the purpose of evaluating the hardware. Additionally, the new Blue2 Reader app can be used by app developers to explore the GATT database on the Blue2 family of devices and can also be used to update the firmware on the Blue2-D, Blue2-DIR, and MFT.

## Key features

- Wireless temperature capture
- Real-time data display
- Fahrenheit/Celsius toggle
- Auto shut-off settings
- Device battery level indicator
- Firmware updates


## Frequently asked questions about Blue2 Reader

### What devices are compatible with Blue2 Reader?

Blue2 Reader requires a Bluetooth-capable device from Emerson Cooper-Atkins, such as the Blue2, Blue2-D, Blue2-DIR, or Multi-Function Thermometer, along with a type K thermocouple probe (purchased separately).

### How often does Blue2 Reader update temperature readings?

Temperature readings can be updated every 1 to 5 seconds for the Blue2 instrument, and every 1 to 60 seconds for the Blue2-D and Blue2-DIR models.

### Can I switch between Fahrenheit and Celsius with Blue2 Reader?

Yes, you can quickly toggle between Fahrenheit and Celsius for the Blue2 instrument directly from the Blue2-D, Blue2-DIR, and MFT instruments.

### Does Blue2 Reader help conserve battery life?

Yes, the app features user-selectable auto shut-off for the Blue2 instruments (1-30 minutes of inactivity) and for the Blue2-D, Blue2-DIR, and MFT (1-60 minutes of inactivity).

### Can I see the battery level of my Blue2 device?

Blue2 Reader displays the charge level of the Blue2 instruments, so you know when it's time to recharge.

### Is Blue2 Reader suitable for app developers?

Yes, app developers can use Blue2 Reader to explore the GATT database on the Blue2 family of devices and update firmware on compatible models.

### What is the age rating for Blue2 Reader?

Blue2 Reader has an age rating of 4+, making it suitable for a wide range of users.

### How often is Blue2 Reader updated?

The latest version, 3.4.1, was released on July 20, 2020. While not frequently updated, it provides core functionality for compatible devices.

## Version history (last 5 releases)

### 3.4.1 — 2020-07-20

Added translations for Japanese language.

### 3.3.1 — 2019-08-16

Support for Standard MFT

### 3.2.3 — 2019-06-27

Bug fixes

### 3.2.2 — 2019-03-28

Support for new Multi-Function Thermometer
Bug fixes

### 3.0.7 — 2018-05-16

Bug fix: app would occasionally crash when connecting to a Blue2.

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## More apps by Cooper-Atkins Corporation

- [HACCP Manager Mobile](https://appshunter.io/ios/app/haccp-manager-mobile/id1169018838)
- [DCC HACCP Manager Mobile](https://appshunter.io/ios/app/dcc-haccp-manager-mobile/id1369325716)
- [UnifEye](https://appshunter.io/ios/app/unifeye/id1471000620)
- [TempTrak Logger](https://appshunter.io/ios/app/temptrak-logger/id1534028262)

All apps by Cooper-Atkins Corporation: https://appshunter.io/developer/940697061

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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 2026-06-11.*