# CoChecker vs Rheem

The clearest difference is rating: Rheem at 4.6 against CoChecker's 2.7. Rheem also leads on ratings volume (1.8K vs 3). CoChecker's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.0). On price, review sentiment, update cadence and ads 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 2.7. That said, the two scores are not equally well evidenced: Rheem has 1.8K ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 50% of CoChecker's written reviews are positive against 43% of Rheem's, so the app with the better star average is not the one people write more warmly about.

CoChecker ships an update every 3 weeks, Rheem monthly. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CoChecker | Rheem |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.7 (3 ratings)](https://appshunter.io/ios/app/cochecker/id1048961367/reviews) | **[4.6 (1.8K ratings)](https://appshunter.io/ios/app/rheem/id1604626837/reviews)** |
| Number of ratings | 3 | **1.8K** |
| Positive reviews | **50.0% of reviews** | 42.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | Free |
| Size | 4 MB | 109 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Kane Asia Inc.](https://appshunter.io/developer/1542732944) | [Rheem Manufacturing Company](https://appshunter.io/developer/853793269) |

## What reviewers say

### CoChecker

[App page](https://appshunter.io/ios/app/cochecker/id1048961367)

This utility app transmits data through your device's audio jack. It is currently compatible with select high-end devices.

**Highlights:** Data transmission via audio jack, Compatible with select devices, Utility function

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

**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 CoChecker free?

CoChecker 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, CoChecker or Rheem?

Rheem is rated higher. CoChecker averages 2.7 out of 5 from 3 ratings, while Rheem averages 4.6 from 1.8K ratings.

### Do CoChecker or Rheem have ads?

Neither CoChecker nor Rheem shows ads.

### Which is updated more often, CoChecker or Rheem?

CoChecker ships an update every 3 weeks, and Rheem monthly. Most recently, CoChecker was updated on October 22, 2026 and Rheem on October 24, 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.*