# CORE Service vs Rheem

The clearest difference is rating: Rheem at 4.6 against CORE Service's 3.6. Rheem also leads on review sentiment (40% vs 0%) and ratings volume (1.8K vs 19). CORE Service's advantage is device support (3 vs 1). 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.

Rheem holds the better App Store score, 4.6 against 3.6. That said, the two scores are not equally well evidenced: Rheem has 1.8K ratings behind it against 19, so its average is the more settled of the two. Written reviews point the same way: 0% of CORE Service's written reviews are positive against 40% of Rheem's.

CORE Service ships an update every 3 months, Rheem monthly. The most recent releases landed on October 24, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | CORE Service | Rheem |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (19 ratings)](https://appshunter.io/ios/app/core-service/id1566612696/reviews) | **[4.6 (1.8K ratings)](https://appshunter.io/ios/app/rheem/id1604626837/reviews)** |
| Number of ratings | 19 | **1.8K** |
| Positive reviews | 0.0% of reviews | **40.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | Free |
| Size | 47 MB | 109 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Lennox Industries](https://appshunter.io/developer/355049651) | [Rheem Manufacturing Company](https://appshunter.io/developer/853793269) |

## What reviewers say

### CORE Service

[App page](https://appshunter.io/ios/app/core-service/id1566612696)

This app provides a wireless interface for commercial HVAC technicians to control and service specific Lennox rooftop units. It offers guided setup, enhanced testing, and parameter configuration to streamline the service process.

**Highlights:** Wireless mobile service app, Guided setup with progress indicators, Enhanced test functionality, Real-time sensor readings and trending, Parameter configuration, Exportable setup summaries

**Features:** macOS Compatibility

**In-app purchases:** none


### Rheem

[App page](https://appshunter.io/ios/app/rheem/id1604626837)

This app streamlines HVAC installation and service for contractors. It offers Bluetooth connectivity for system setup and troubleshooting, along with comprehensive support for product information, warranty tracking, and locating resources.

**Highlights:** Bluetooth setup and troubleshooting, System monitoring and status checks, Alarm diagnosis and history, Parts replacement guidance, Access to manuals and tech sheets, Warranty tracking and certificate sharing, Retailer and distributor locator

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CORE Service free?

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

### Is Rheem free?

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

### Which has better reviews, CORE Service or Rheem?

Rheem is rated higher. CORE Service averages 3.6 out of 5 from 19 ratings, while Rheem averages 4.6 from 1.8K ratings.

### Do CORE Service or Rheem have ads?

Neither CORE Service nor Rheem shows ads.

### Which is updated more often, CORE Service or Rheem?

CORE Service ships an update every 3 months, and Rheem monthly. Most recently, CORE Service was updated on October 24, 2026 and Rheem on November 3, 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.*