Comparison

Serial Control vs HDMI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Serial Control

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
Read full description

Serial Device Application Software for iOS Build and customize your own serial control interface from your smartphone, tablet, or web browser Features • Use with your existing StarTech.com serial products (for example, NETRS232, NETRS2321P, NETRS232485, NETRS232485W) • Issue console commands, build a command library, or design a control page that’s tailored to your application, complete with buttons, sliders, and switches. • Easily set up events based on response types, and map actions to run when an event occurs. • The app automatically detects the StarTech.com serial devices that are connected to your network. • Integrated account control lets you create an account, save settings, and share it across multiple devices. • Includes a HEX and ACSII command editor. • Conveniently test commands as you edit them.

About

HDMI

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
Read full description

Turn your device into an external display with HDMI Monitor, perfect for gaming, photo- & video-shooting, and more. Connect your gaming console to your device and enjoy your favorite games without the need to have a TV or Display at hand. Key Features: - Versatile Functionality: Seamless integration with consoles, cameras, professional photoshooting gear, PC, and just about any other device that supports HDMI output. - High-Quality Streaming: Crystal-clear HD video and high-quality audio, with full support for your headphones. - Get a Display and High-Quality Speakers: Turn your device into a media station that’s part of the ecosystem that you can access for complete immersion and 100% satisfaction. - Fast and User-Friendly: Quick setup and responsive design for a hassle-free experience. Improved Connectivity: - Use a simple USB-C video-capture card for easy connection. - Supports various resolutions and frame rates for optimal video clarity. Ideal For: - Gamers, photographers, videographers and geeks. - Anyone needing a portable screen for games, movies, TV, or presentations. You need: HDMI to USB-C Video Capture Card, iPad with USB-C and iOS 17 Try the ultimate app that turns your device into a universal display!

Screenshots

Serial Control4 screens
HDMI3 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Serial Control versus HDMI: the parameters behind the verdict, then further details
ParameterSerial ControlHDMI
PriceFreeFree
Rating—2.9 (74 ratings) — better
Positive reviews0.0% of reviews52.2% of reviews — better
Number of ratings—74 — better
Update frequencyEvery 5 weeksEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS11.0 — better17.0
Further details — not scored
Size6 MB83 MB
Age rating4+4+
DeveloperStarTech.comIon Danilov

Customer experience

Serial Control

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

HDMI

All ratings74 ratings
Positive47.3%
Neutral4.1%
Negative48.6%
Written reviews23 reviews
Positive52.2%
Neutral0.0%
Negative47.8%

In-app purchases

None

Serial Control

No in-app purchases

None

HDMI

No in-app purchases

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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