Comparison

Relay Network vs 16 Relay Controller

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

Head to head

About

Relay Network

Control multiple relay modules over the internet. Easily add, remove, and customize names for modules and individual relays for clear identification of outputs.

Highlights

Control multiple relay modules
Internet connectivity
Add/remove modules easily
Custom module naming
Custom relay naming

Features

Read full description

This app allows you to control any number of either ETH-RLY02 or ETH-RLY16 modules (available from www.robot-electronics.co.uk) via the internet. It is easy to add or remove modules and allows you to set custom names for each module, each relay is also nameable allowing easy identification for the outputs.

About

16 Relay Controller

Features

Read full description

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

Screenshots

Relay Network1 screens

16 Relay Controller3 screens

Verdict

The call

The clearest difference is update cadence: Relay Network at every 6 months against 16 Relay Controller's every 34 months. Relay Network also leads on iOS requirement (9.0 vs 18.6). 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

Relay Network ships an update every 6 months, 16 Relay Controller every 34 months. The most recent releases landed on September 15, 2026 and September 18, 2026 respectively.

Scorecard2 real differences · 6 level

Relay Network versus 16 Relay Controller: the parameters behind the verdict, then further details
Parameter	Relay Network	16 Relay Controller
Price	Free	Free
Positive reviews	50.0% of reviews	—
Update frequency	Every 6 months — better	Every 34 months
Ads	No	No
In-app purchases	No	No
Monetization	Free	—
Devices	iPhone, iPad, iPod — better	iPhone, iPad
Requires iOS	9.0 — better	18.6
Further details — not scored
Size	1 MB	0 MB
Age rating	4+	4+
Developer	Devantech Ltd.	Mike Henry

In-app purchases

None

Relay Network

No in-app purchases

None

16 Relay Controller

No in-app purchases

Questions

Is Relay Network free?

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

Is 16 Relay Controller free?

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

Do Relay Network or 16 Relay Controller have ads?

Neither Relay Network nor 16 Relay Controller shows ads.

Which is updated more often, Relay Network or 16 Relay Controller?

Relay Network ships an update every 6 months, and 16 Relay Controller every 34 months. Most recently, Relay Network was updated on September 15, 2026 and 16 Relay Controller on September 18, 2026.