# 16 Relay Controller vs Virtuino IoT

The clearest difference is in-app purchases: 16 Relay Controller at none against Virtuino IoT's 1. Virtuino IoT's advantage is update cadence (monthly vs every 34 months) and device support (4 vs 2). On price and ads there is nothing between them.

Both are free to download. Virtuino IoT sells 1 one-off in-app purchase. 16 Relay Controller asks for nothing beyond the download.

16 Relay Controller ships an update every 34 months, Virtuino IoT monthly. The most recent releases landed on September 18, 2026 and July 31, 2026 respectively.

## The numbers

| Metric | 16 Relay Controller | Virtuino IoT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/virtuino-iot/id1624114498/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 34 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 0 MB | 61 MB |
| Requires iOS | 18.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Mike Henry](https://appshunter.io/developer/1219782847) | [Ilias Lamprou](https://appshunter.io/developer/1624114500) |

## What reviewers say

### 16 Relay Controller

[App page](https://appshunter.io/ios/app/16-relay-controller/id1541478119)

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

**In-app purchases:** none


### Virtuino IoT

[App page](https://appshunter.io/ios/app/virtuino-iot/id1624114498)

Create custom interfaces to visualize and control Arduino devices or IoT platforms. Design interactive screens for seamless interaction with your connected hardware.

**Highlights:** Create custom screens, Visualize IoT data, Control Arduino devices, IoT platform integration, User-friendly interface design

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Virtuino IoT pro | $14.99 | one-time |


## Frequently asked questions

### Is 16 Relay Controller free?

16 Relay Controller is free to download, with no in-app purchases.

### Is Virtuino IoT free?

Virtuino IoT is free to download, with in-app purchases available.

### Do 16 Relay Controller or Virtuino IoT have ads?

Neither 16 Relay Controller nor Virtuino IoT shows ads.

### Which is updated more often, 16 Relay Controller or Virtuino IoT?

16 Relay Controller ships an update every 34 months, and Virtuino IoT monthly. Most recently, 16 Relay Controller was updated on September 18, 2026 and Virtuino IoT on July 31, 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.*