Comparison

16 Relay Controller vs WiFi ConX

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

Head to head

About

16 Relay Controller

Features

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App to control henry solutions 16 Relay hardware devices. The 16 Relay controller connects to an IOT device via web service calls. The webservice endpoints you connect to is determined by the application settings. The default IP address of the webservice for the relay controller is set to a non-routable IP address of 192.168.4.2. The app only uses http and not https so it is only suitable for controlling IOT devices in a closed environment. The 16 Relay controller is limited to sending only the following URL request to the IP address you enter in the settings: http://[ip-address]/status http://[ip-address]/status/[relay-number] http://[ip-address]/on/[relay-number] http://[ip-address]/off/[relay-number] http://[ip-address]/allon http://[ip-address]/alloff http://[ip-address]/hb

About

WiFi ConX

Features

Read full description

WiFi ConX allows you to control Wi-Fi–connected robot cars and drones wirelessly using your Phone. Whether you are into Robotics, STEM Learning, IoT Experiments, or Remote Vehicles, WiFi ConX gives you seamless and precise control. Key Features: • Smooth joystick-based movement control • Adjustable speed levels for accurate driving • STOP / RESUME safety actions • Works over local Wi-Fi network • Clean and intuitive interface • Great for STEM education, robotics competitions & DIY automation Compatible with AI & Robotics Kit, AI & IOT Kit.

Screenshots

16 Relay Controller3 screens

WiFi ConX4 screens

Verdict

The call

The clearest difference is update cadence: WiFi ConX at every 3 weeks against 16 Relay Controller's every 34 months. On price, ads, in-app purchases and device support 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

16 Relay Controller ships an update every 34 months, WiFi ConX every 3 weeks. The most recent releases landed on September 18, 2026 and September 14, 2026 respectively.

Scorecard1 real difference · 5 level

16 Relay Controller versus WiFi ConX: the parameters behind the verdict, then further details
Parameter	16 Relay Controller	WiFi ConX
Price	Free	Free
Update frequency	Every 34 months	Every 3 weeks — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad	iPhone, iPad
Requires iOS	18.6	17.0 — better
Further details — not scored
Size	0 MB	32 MB
Age rating	4+	4+
Developer	Mike Henry	STEMbotix Private Limited

In-app purchases

None

16 Relay Controller

No in-app purchases

None

WiFi ConX

No in-app purchases

Questions

Is 16 Relay Controller free?

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

Is WiFi ConX free?

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

Do 16 Relay Controller or WiFi ConX have ads?

Neither 16 Relay Controller nor WiFi ConX shows ads.

Which is updated more often, 16 Relay Controller or WiFi ConX?

16 Relay Controller ships an update every 34 months, and WiFi ConX every 3 weeks. Most recently, 16 Relay Controller was updated on September 18, 2026 and WiFi ConX on September 14, 2026.