# Serial Control vs HDMI

The clearest difference is review sentiment: HDMI at 52% against Serial Control's 0%. Serial Control's advantage is iOS requirement (11.0 vs 17.0). 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.

Serial Control ships an update every 5 weeks, HDMI every 3 weeks. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Serial Control | HDMI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.9 (74 ratings)](https://appshunter.io/ios/app/hdmi/id6476621872/reviews)** |
| Number of ratings | — | **74** |
| Positive reviews | 0.0% of reviews | **52.2% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 6 MB | 83 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [StarTech.com](https://appshunter.io/developer/983360067) | [Ion Danilov](https://appshunter.io/developer/1727366898) |

## What reviewers say

### Serial Control

[App page](https://appshunter.io/ios/app/serial-control/id1126359830)

Create custom interfaces for serial devices from your smartphone or tablet. Design control pages with buttons and sliders, build command libraries, and automate actions based on device responses. Seamlessly integrate with StarTech.com serial products.

**Highlights:** Customizable control interfaces, Command library builder, Event-based action automation, Automatic device detection, Integrated account control, HEX and ASCII command editor

**Features:** macOS Compatibility

**In-app purchases:** none


### HDMI

[App page](https://appshunter.io/ios/app/hdmi/id6476621872)

Transform your device into an external monitor for gaming, photography, and video. Connect consoles, cameras, PCs, and more for high-quality HD streaming. Enjoy a portable display and immersive audio experience.

**Highlights:** External display functionality, Connect gaming consoles, High-quality HD streaming, Supports cameras and PCs, Portable screen solution, USB-C video capture card compatible

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

**In-app purchases:** none


## Frequently asked questions

### Is Serial Control free?

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

### Is HDMI free?

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

### Do Serial Control or HDMI have ads?

Neither Serial Control nor HDMI shows ads.

### Which is updated more often, Serial Control or HDMI?

Serial Control ships an update every 5 weeks, and HDMI every 3 weeks. Most recently, Serial Control was updated on October 3, 2026 and HDMI on October 8, 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.*