# iCOMM Connectivity vs Optimal°

The clearest difference is review sentiment: Optimal° at 60% against iCOMM Connectivity's 3%. Optimal° also leads on rating (4.9 vs 1.3). iCOMM Connectivity's advantage is ratings volume (299 vs 7). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Optimal° holds the better App Store score, 4.9 against 1.3. That said, the two scores are not equally well evidenced: iCOMM Connectivity has 299 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 3% of iCOMM Connectivity's written reviews are positive against 60% of Optimal°'s.

iCOMM Connectivity ships an update every 3 months, Optimal° every 5 months. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | iCOMM Connectivity | Optimal° |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.3 (299 ratings)](https://appshunter.io/ios/app/icomm-connectivity/id1494213395/reviews) | **[4.9 (7 ratings)](https://appshunter.io/ios/app/optimal/id6473653236/reviews)** |
| Number of ratings | **299** | 7 |
| Positive reviews | 3.3% of reviews | **60.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 33 MB | 19 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [A. O. Smith](https://appshunter.io/developer/456489825) | [Its Optimal LLC](https://appshunter.io/developer/1719356914) |

## What reviewers say

### iCOMM Connectivity

[App page](https://appshunter.io/ios/app/icomm-connectivity/id1494213395)

Remotely manage compatible water heaters with this app. Monitor temperature, operating modes, and receive diagnostic notifications. Optimize energy usage by aligning with utility programs.

**Highlights:** Remote water heater management, Temperature and mode control, Diagnostic fault notifications, Utility program alignment, Easy setup process

**In-app purchases:** none

**What reviewers like**

- ✅ Water heater hardware itself performs well
- 🎯 Simple temperature adjustment when working
- 📊 Basic hot water availability gauge
- ⚙️ Vacation mode functionality
- 🔧 Mode switching capability

**What reviewers complain about**

- 🐛 Constant connectivity failures and service outages
- 🔄 App repeatedly forgets registered water heater
- ❌ Requires re-registration multiple times monthly
- ⏱️ Frequent forced logouts and session expirations
- 📱 QR code scanning consistently fails

**Reported bugs**

- App loses water heater registration without warning
- QR code scanner fails to recognize valid codes
- Manual serial number entry rejected despite correct input
- Session expires within 15-30 seconds of login
- App crashes when attempting to set schedules

**Requested features**

- Real-time current water temperature display
- Hourly energy usage breakdown (not just daily/monthly)
- Simple on/off scheduling by time of day
- Temperature scheduling for specific times
- Data export capability


### Optimal°

[App page](https://appshunter.io/ios/app/optimal/id6473653236)

This app provides remote control and monitoring for a specific brand of tankless water heaters. Users can adjust temperature, track performance metrics, and receive diagnostic information for efficient hot water management.

**Highlights:** Set water heater output temperature, Monitor unit activity state, Track flow rate and energy consumption, View inlet and outlet water temperatures, Access diagnostics and error codes, Enable Vacation Mode

**In-app purchases:** none


## Frequently asked questions

### Is iCOMM Connectivity free?

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

### Is Optimal° free?

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

### Which has better reviews, iCOMM Connectivity or Optimal°?

Optimal° is rated higher. iCOMM Connectivity averages 1.3 out of 5 from 299 ratings, while Optimal° averages 4.9 from 7 ratings.

### Do iCOMM Connectivity or Optimal° have ads?

Neither iCOMM Connectivity nor Optimal° shows ads.

### Which is updated more often, iCOMM Connectivity or Optimal°?

iCOMM Connectivity ships an update every 3 months, and Optimal° every 5 months. Most recently, iCOMM Connectivity was updated on October 15, 2026 and Optimal° on October 14, 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.*