Pool Control + vs Merlino
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Pool Control +
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App created for monitoring pH and Rx pumps installed in your swimming pool. Simple and user-friendly app that allows you to view the values of measurements, dosing and alarms in real time. Historical measurement charts up to 30 days.
Merlino
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The Merlino app is able to read and write the parameters of CPA Merlino WiFi iOT devices: chlorine generators, devices for reading and regulating pH and Rx, for the management of heaters, whirlpools, pumps, RGB lamps. The devices are seen as WiFi Access Points. The app user must select the WiFi of a device in the iPhone settings before opening the app and connecting to it. The WiFi device must be close to the iPhone, at most a few meters. The app allows you to simulate the connection to a device, if the device is not physically available, by turning off the iPhone's WiFi before running the app, in this way it is possible to verify all the app's functions.
Screenshots
Verdict
The clearest difference is update cadence: Merlino at every 7 months against Pool Control +'s every 30 months. Pool Control +'s advantage is iOS requirement (12.2 vs 14.0). 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.
Pool Control + ships an update every 30 months, Merlino every 7 months. The most recent releases landed on September 15, 2026 and May 19, 2026 respectively.
| Parameter | Pool Control + | Merlino |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 30 months | Every 7 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.2 — better | 14.0 |
| Further details — not scored | ||
| Size | 83 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Microdos srl | C.p.a s.r.l |
In-app purchases
Pool Control +
No in-app purchases
Merlino
No in-app purchases
