# Secure Controls vs ATC CALA

The clearest difference is review sentiment: ATC CALA at 50% against Secure Controls's 12%. ATC CALA also leads on update cadence (every 6 weeks vs every 3 months). Secure Controls's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, in-app purchases and device support there is nothing between them.

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

Secure Controls ships an update every 3 months, ATC CALA every 6 weeks. The most recent releases landed on October 8, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Secure Controls | ATC CALA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/atc-cala/id1588090783/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 12.1% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 40 MB | 17 MB |
| Requires iOS | **11.0** | 14.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Secure Controls (UK) Ltd](https://appshunter.io/developer/564768807) | [Ferroli España](https://appshunter.io/developer/1450809350) |

## What reviewers say

### Secure Controls

[App page](https://appshunter.io/ios/app/secure-controls/id1541319171)

Control your home's heating and hot water remotely or from anywhere with this app. It allows you to view current status, adjust temperatures, set schedules, and receive important alerts. An optional Wi-Fi adapter enables remote access.

**Highlights:** View heating status, Modify target temperature, Home-Away feature, 7-day schedule control, Device management, Instant alerts, Hold temperature

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use (for some)
- 👍 Connects effortlessly via Bluetooth (for some)
- 👍 Basic functionality works (for some)
- 👍 Can copy schedule to all days
- 👍 Utilizes solar panels (for some)

**What reviewers complain about**

- 🐛 Painfully slow to load
- 🐛 Zero notifications
- 🐛 Doesn't work 99% of the time
- 🐛 Spinning donut of death
- 🐛 Cannot connect

**Reported bugs**

- Spinning donut of death
- Cannot connect
- Boost for water only, not heating
- Display does not show boost countdown correctly
- Settings gear icon not visible on iPhone 11

**Requested features**

- Add immersion timing to app
- API for home assistant
- Edit button to name devices
- Apply boost to upstairs heating
- Local Siri Shortcuts integration


### ATC CALA

[App page](https://appshunter.io/ios/app/atc-cala/id1588090783)

Control your new ATC thermal emitters remotely. Adjust settings, monitor performance, and manage your heating system from your smartphone. Designed for efficient and convenient home climate management.

**Highlights:** Remote control of thermal emitters, Adjust settings, Monitor performance, Manage heating system, Smartphone integration

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Secure Controls free?

Secure Controls is free to download, with no in-app purchases.

### Is ATC CALA free?

ATC CALA is free to download, with no in-app purchases.

### Do Secure Controls or ATC CALA have ads?

ATC CALA shows ads; Secure Controls does not.

### Which is updated more often, Secure Controls or ATC CALA?

Secure Controls ships an update every 3 months, and ATC CALA every 6 weeks. Most recently, Secure Controls was updated on October 8, 2026 and ATC CALA on September 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*