# Vaillant vSMART Control vs A4U Services

The clearest difference is update cadence: A4U Services at every 5 days against Vaillant vSMART Control's every 2 months. A4U Services also leads on iOS requirement (13.4 vs 15.0). 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.

Vaillant vSMART Control ships an update every 2 months, A4U Services every 5 days. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Vaillant vSMART Control | A4U Services |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (27 ratings)](https://appshunter.io/ios/app/vaillant-vsmart-control/id1023682630/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 56.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 days** |
| Monetization | Free | — |
| Size | 57 MB | 43 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vaillant Group](https://appshunter.io/developer/993660850) | [Guru Automation Srl](https://appshunter.io/developer/1884271263) |

## What reviewers say

### Vaillant vSMART Control

[App page](https://appshunter.io/ios/app/vaillant-vsmart-control/id1023682630)

This app offers remote control of your home's heating and hot water system from your smartphone. It allows for personalized scheduling, monitors outdoor temperature for optimal efficiency, and intelligently manages energy usage to save costs.

**Highlights:** Remote heating and hot water control, Customizable time and temperature profiles, Connect multiple controllers, Wireless internet connection, Weather compensation, Intelligent thermostat functionality

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 💡 Effective heating control
- 💰 Cost-effective operation
- 🌍 Remote control capability
- 🏠 Comfortable home temperature

**What reviewers complain about**

- 🐛 Gateway unreachable errors
- 🐛 Constantly loses connection
- 🐛 Stopped working
- 🐛 Unreliable for remote control
- 🐛 Zero info when not connected

**Reported bugs**

- Gateway unreachable errors
- Loses connection frequently
- Stopped working
- App no longer opens
- Blank white screen

**Requested features**

- Add wireless radiator valves
- Allow adjustment of radiator flow temperature without advanced settings
- Provide access to information on the boiler display
- Include all service codes in advanced/service section
- Allow choice of trended variables


### A4U Services

[App page](https://appshunter.io/ios/app/a4u-services/id6760397457)

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

**In-app purchases:** none


## Frequently asked questions

### Is Vaillant vSMART Control free?

Vaillant vSMART Control is free to download, with no in-app purchases.

### Is A4U Services free?

A4U Services is free to download, with no in-app purchases.

### Do Vaillant vSMART Control or A4U Services have ads?

Neither Vaillant vSMART Control nor A4U Services shows ads.

### Which is updated more often, Vaillant vSMART Control or A4U Services?

Vaillant vSMART Control ships an update every 2 months, and A4U Services every 5 days. Most recently, Vaillant vSMART Control was updated on October 20, 2026 and A4U Services on October 6, 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.*