# Only One vs Contatto

The clearest difference is rating: Contatto at 4.8 against Only One's 1.0. Contatto also leads on ratings volume (264 vs 1). Only One's advantage is iOS requirement (8.0 vs 15.1). 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.

Contatto holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Contatto has 264 ratings behind it against 1, so its average is the more settled of the two.

Only One ships an update every 2 months, Contatto every 6 weeks. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Only One | Contatto |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/only-one/id1095457189/reviews) | **[4.8 (264 ratings)](https://appshunter.io/ios/app/contatto/id1446886122/reviews)** |
| Number of ratings | 1 | **264** |
| Positive reviews | — | 53.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 12 MB | 95 MB |
| Requires iOS | **8.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [AppFactory Solucoes de Informatica LTDA](https://appshunter.io/developer/424470718) | [Motoppar Industria e Comercio de Automatizadores Ltda](https://appshunter.io/developer/1024856431) |

## What reviewers say

### Only One

[App page](https://appshunter.io/ios/app/only-one/id1095457189)

Control your home remotely with this app. Manage lights, gates, and doors from your smartphone, receiving real-time status updates and notifications. Automate your property for enhanced security and convenience.

**Highlights:** Remote control of gates and doors, Control lights remotely, Real-time command and status notifications, Add multiple users to your account, Monitor equipment status from anywhere, Automate property features

**Features:** macOS Compatibility

**In-app purchases:** none


### Contatto

[App page](https://appshunter.io/ios/app/contatto/id1446886122)

Control home security systems, gates, and electric fences remotely. Receive instant notifications and track all activity for a smarter, more secure environment.

**Highlights:** Remote gate control, Alarm system management, Electric fence monitoring, Instant notifications, Activity tracking, Smart home integration

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

**In-app purchases:** none


## Frequently asked questions

### Is Only One free?

Only One is free to download, with no in-app purchases.

### Is Contatto free?

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

### Which has better reviews, Only One or Contatto?

Contatto is rated higher. Only One averages 1.0 out of 5 from 1 ratings, while Contatto averages 4.8 from 264 ratings.

### Do Only One or Contatto have ads?

Neither Only One nor Contatto shows ads.

### Which is updated more often, Only One or Contatto?

Only One ships an update every 2 months, and Contatto every 6 weeks. Most recently, Only One was updated on October 24, 2026 and Contatto on October 26, 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.*