# HVAC Decoder vs ICM Omni

The clearest difference is review sentiment: HVAC Decoder at 69% against ICM Omni's 0%. HVAC Decoder also leads on ratings volume (28 vs 1). ICM Omni's advantage is price (Free vs $9.99) and rating (5.0 vs 4.0). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ICM Omni is free to download; HVAC Decoder costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ICM Omni holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: HVAC Decoder has 28 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 69% of HVAC Decoder's written reviews are positive against 0% of ICM Omni's, so the app with the better star average is not the one people write more warmly about.

HVAC Decoder ships an update every 3 months, ICM Omni monthly. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | HVAC Decoder | ICM Omni |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.0 (28 ratings)](https://appshunter.io/ios/app/hvac-decoder/id1355543096/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/icm-omni/id1668830205/reviews)** |
| Number of ratings | **28** | 1 |
| Positive reviews | **68.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 6 MB | 51 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Charles Cope](https://appshunter.io/developer/1355543095) | [ICM controls corp](https://appshunter.io/developer/879929077) |

## What reviewers say

### HVAC Decoder

[App page](https://appshunter.io/ios/app/hvac-decoder/id1355543096)

Decode HVAC model and serial numbers from major brands. This utility app provides thousands of model numbers and can email search results. It supports a wide range of HVAC equipment and offers close matches for unknown numbers.

**Highlights:** Decode HVAC model numbers, Decode HVAC serial numbers, Supports major HVAC brands, Thousands of model numbers, Email search results, Close match functionality, Report missing data

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

**In-app purchases:** none


### ICM Omni

[App page](https://appshunter.io/ios/app/icm-omni/id1668830205)

This utility app allows users to reconfigure NFC-compatible devices by adjusting modes and parameters. Save custom settings, read device memory to confirm programming, and replace legacy ICM parts with ease.

**Highlights:** Reconfigure NFC compatible devices, Adjust device mode and parameters, Save custom device programs, Read device memory for confirmation, Replace legacy ICM parts

**In-app purchases:** none


## Frequently asked questions

### Is HVAC Decoder free?

HVAC Decoder costs $9.99, with no in-app purchases.

### Is ICM Omni free?

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

### Which has better reviews, HVAC Decoder or ICM Omni?

ICM Omni is rated higher. HVAC Decoder averages 4.0 out of 5 from 28 ratings, while ICM Omni averages 5.0 from 1 ratings.

### Do HVAC Decoder or ICM Omni have ads?

Neither HVAC Decoder nor ICM Omni shows ads.

### Which is updated more often, HVAC Decoder or ICM Omni?

HVAC Decoder ships an update every 3 months, and ICM Omni monthly. Most recently, HVAC Decoder was updated on October 7, 2026 and ICM Omni on October 21, 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.*