# iFLO vs Optimal°

The clearest difference is rating: Optimal° at 4.9 against iFLO's 3.1. Optimal° also leads on monetization model (free vs subscription) and review sentiment (60% vs 30%). iFLO's advantage is update cadence (every 6 weeks vs every 5 months) and ratings volume (92 vs 7). On price, ads, in-app purchases and device support 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 3.1. That said, the two scores are not equally well evidenced: iFLO has 92 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 30% of iFLO's written reviews are positive against 60% of Optimal°'s.

iFLO ships an update every 6 weeks, Optimal° every 5 months. The most recent releases landed on October 8, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | iFLO | Optimal° |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (92 ratings)](https://appshunter.io/ios/app/iflo/id6446085127/reviews) | **[4.9 (7 ratings)](https://appshunter.io/ios/app/optimal/id6473653236/reviews)** |
| Number of ratings | **92** | 7 |
| Positive reviews | 30.3% of reviews | **60.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | Subscription | **Free** |
| Size | 30 MB | 19 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Air Innovations](https://appshunter.io/developer/1675842992) | [Its Optimal LLC](https://appshunter.io/developer/1719356914) |

## What reviewers say

### iFLO

[App page](https://appshunter.io/ios/app/iflo/id6446085127)

Proactively maintain your HVAC system to prevent clogs, backups, and water damage. This smart device uses AI and custom schedules based on your climate to keep your AC running efficiently, saving you time and money.

**Highlights:** Automated drain line cleaning, AI-powered weather-based maintenance, Customizable maintenance schedules, Real-time device monitoring, Timely notifications and reminders, Easy app-guided installation

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

**In-app purchases:** none


### 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 iFLO free?

iFLO 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, iFLO or Optimal°?

Optimal° is rated higher. iFLO averages 3.1 out of 5 from 92 ratings, while Optimal° averages 4.9 from 7 ratings.

### Do iFLO or Optimal° have ads?

Neither iFLO nor Optimal° shows ads.

### Which is updated more often, iFLO or Optimal°?

iFLO ships an update every 6 weeks, and Optimal° every 5 months. Most recently, iFLO was updated on October 8, 2026 and Optimal° on September 29, 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.*