# DiO one vs De Dietrich Smart

The clearest difference is rating: DiO one at 4.1 against De Dietrich Smart's 2.8. DiO one also leads on review sentiment (61% vs 50%) and ratings volume (26 vs 5). De Dietrich Smart's advantage is iOS requirement (13.0 vs 15.0). 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.

DiO one holds the better App Store score, 4.1 against 2.8. That said, the two scores are not equally well evidenced: DiO one has 26 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 61% of DiO one's written reviews are positive against 50% of De Dietrich Smart's.

DiO one ships an update every 2 months, De Dietrich Smart every 5 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | DiO one | De Dietrich Smart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (26 ratings)](https://appshunter.io/ios/app/dio-one/id1493503504/reviews)** | [2.8 (5 ratings)](https://appshunter.io/ios/app/de-dietrich-smart/id1585804961/reviews) |
| Number of ratings | **26** | 5 |
| Positive reviews | **61.2% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 208 MB | 103 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Chacon](https://appshunter.io/developer/889045155) | [De Dietrich Thermique](https://appshunter.io/developer/577447608) |

## What reviewers say

### DiO one

[App page](https://appshunter.io/ios/app/dio-one/id1493503504)

Control your smart home devices remotely with this app. Turn lights and appliances on or off, automate schedules, and simulate presence for security. Optimize energy usage and manage your connected home from anywhere.

**Highlights:** Remote control of connected devices, Presence simulation, Scheduling and automation, Energy saving optimization, Control from anywhere

**Features:** Apple Wallet

**In-app purchases:** none


### De Dietrich Smart

[App page](https://appshunter.io/ios/app/de-dietrich-smart/id1585804961)

Control your home's heating and cooling remotely with this smart thermostat app. Adjust temperatures, set schedules, and manage energy consumption from your smartphone or tablet, ensuring comfort and efficiency wherever you are.

**Highlights:** Remote temperature control, Schedule creation and modification, Vacation mode setting, Manage multiple installations, Energy consumption display, Error notifications

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DiO one free?

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

### Is De Dietrich Smart free?

De Dietrich Smart is free to download, with no in-app purchases.

### Which has better reviews, DiO one or De Dietrich Smart?

DiO one is rated higher. DiO one averages 4.1 out of 5 from 26 ratings, while De Dietrich Smart averages 2.8 from 5 ratings.

### Do DiO one or De Dietrich Smart have ads?

Neither DiO one nor De Dietrich Smart shows ads.

### Which is updated more often, DiO one or De Dietrich Smart?

DiO one ships an update every 2 months, and De Dietrich Smart every 5 weeks. Most recently, DiO one was updated on November 7, 2026 and De Dietrich Smart on November 3, 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.*