16 Relay Controller vs AM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
16 Relay Controller
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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
AM
This utility app connects to a specialized probe to measure fats, oils, and grease levels. It utilizes Bluetooth Low Energy for seamless communication with the probe, providing essential data for monitoring and analysis.
- FOG level measurement
- BLE probe communication
- Data monitoring
- Water analytics support
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The app measures the FOG levels ( Fats, oils and grease ) using the FOG probe which communicates via BLE connection.
Screenshots
Verdict
The clearest difference is update cadence: AM at every 4 months against 16 Relay Controller's every 34 months. AM also leads on iOS requirement (13.0 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
16 Relay Controller ships an update every 34 months, AM every 4 months. The most recent releases landed on October 25, 2026 and October 8, 2026 respectively.
| Parameter | 16 Relay Controller | AM |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 34 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 0 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Mike Henry | Water Analytics, Inc |
In-app purchases
16 Relay Controller
No in-app purchases
AM
No in-app purchases
Questions
Is 16 Relay Controller free?
Is AM free?
Do 16 Relay Controller or AM have ads?
Which is updated more often, 16 Relay Controller or AM?
Other comparisons
