# X vs Optimal°

The clearest difference is rating: X at 4.8 against Optimal°'s 3.9. X also leads on review sentiment (91% vs 60%) and ratings volume (3.5K vs 9). 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.

X holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: X has 3.5K ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 91% of X's written reviews are positive against 60% of Optimal°'s.

X ships an update monthly, Optimal° every 5 months. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | X | Optimal° |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (3.5K ratings)](https://appshunter.io/ios/app/x-sense-home-security/id1568666708/reviews)** | [3.9 (9 ratings)](https://appshunter.io/ios/app/optimal/id6473653236/reviews) |
| Number of ratings | **3.5K** | 9 |
| Positive reviews | **91.0% of reviews** | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Free | Free |
| Size | 333 MB | 19 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [X-sense USA LLC](https://appshunter.io/developer/1568666710) | [Its Optimal LLC](https://appshunter.io/developer/1719356914) |

## What reviewers say

### X

[App page](https://appshunter.io/ios/app/x-sense-home-security/id1568666708)

Easily connect and manage smart home security devices. Receive instant alerts for potential dangers and remotely monitor your home's status from anywhere. Share device access with family for collective peace of mind.

**Highlights:** Remote device setup and testing, Real-time push notifications for alerts, Share device access with family, 24/7 fire dispatch (Protect+ Plan), Monitor home status remotely

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy setup
- 🔒 Reliable connectivity
- 👍 Convenient remote monitoring
- 🚀 Straightforward installation
- 👍 Helpful app

**What reviewers complain about**

- 🔋 Battery recharging issues
- 🐛 Connectivity problems
- 🐛 Unreliable notifications
- 🔒 Limited user access
- 🐛 Sensor offline issues

**Reported bugs**

- Devices going offline unexpectedly
- Firmware update failures
- Inconsistent sensor behavior

**Requested features**

- Ability to test alarms from app
- Option to silence alarms remotely
- Support for multiple user logins
- Customizable notification tones
- Expanded location management


### 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 X free?

X 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, X or Optimal°?

X is rated higher. X averages 4.8 out of 5 from 3.5K ratings, while Optimal° averages 3.9 from 9 ratings.

### Do X or Optimal° have ads?

Neither X nor Optimal° shows ads.

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

X ships an update monthly, and Optimal° every 5 months. Most recently, X was updated on November 1, 2026 and Optimal° 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.*