# Blue2 Reader vs GlacierGrid

The clearest difference is rating: GlacierGrid at 4.5 against Blue2 Reader's 2.6. GlacierGrid also leads on ratings volume (459 vs 5) and update cadence (every 3 weeks vs every 3 months). Blue2 Reader's advantage is iOS requirement (8.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

GlacierGrid holds the better App Store score, 4.5 against 2.6. That said, the two scores are not equally well evidenced: GlacierGrid has 459 ratings behind it against 5, so its average is the more settled of the two.

Blue2 Reader ships an update every 3 months, GlacierGrid every 3 weeks. The most recent releases landed on September 24, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Blue2 Reader | GlacierGrid |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (5 ratings)](https://appshunter.io/ios/app/blue2-reader/id940697062/reviews) | **[4.5 (459 ratings)](https://appshunter.io/ios/app/glaciergrid/id1491822471/reviews)** |
| Number of ratings | 5 | **459** |
| Positive reviews | — | 73.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 59 MB | 27 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cooper-Atkins Corporation](https://appshunter.io/developer/940697061) | [GlacierGrid Inc.](https://appshunter.io/developer/1065304513) |

## What reviewers say

### Blue2 Reader

[App page](https://appshunter.io/ios/app/blue2-reader/id940697062)

Wirelessly capture temperature readings from compatible Emerson Cooper-Atkins devices using Bluetooth. View real-time data, toggle between Fahrenheit and Celsius, and manage device settings like auto shut-off and battery level.

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

**Features:** macOS Compatibility

**In-app purchases:** none


### GlacierGrid

[App page](https://appshunter.io/ios/app/glaciergrid/id1491822471)

Monitor refrigeration and HVAC systems to prevent food waste and reduce energy consumption. Receive real-time alerts for temperature issues and make adjustments remotely to ensure compliance and optimize performance.

**Highlights:** Real-time temperature and humidity monitoring, Customizable alert notifications, Temporary HVAC setpoint adjustments, Temperature logbooks for compliance, Equipment performance insights, Team and user management

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Blue2 Reader free?

Blue2 Reader is free to download, with no in-app purchases.

### Is GlacierGrid free?

GlacierGrid is free to download, with no in-app purchases.

### Which has better reviews, Blue2 Reader or GlacierGrid?

GlacierGrid is rated higher. Blue2 Reader averages 2.6 out of 5 from 5 ratings, while GlacierGrid averages 4.5 from 459 ratings.

### Do Blue2 Reader or GlacierGrid have ads?

Neither Blue2 Reader nor GlacierGrid shows ads.

### Which is updated more often, Blue2 Reader or GlacierGrid?

Blue2 Reader ships an update every 3 months, and GlacierGrid every 3 weeks. Most recently, Blue2 Reader was updated on September 24, 2026 and GlacierGrid on October 8, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*