# Ermes Monitor vs Caleffi Code

The clearest difference is review sentiment: Ermes Monitor at 50% against Caleffi Code's 24%. Caleffi Code's advantage is update cadence (every 3 months vs every 7 months) and iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Ermes Monitor ships an update every 7 months, Caleffi Code every 3 months. The most recent releases landed on October 18, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Ermes Monitor | Caleffi Code |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | **50.0% of reviews** | 23.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 22 MB | 195 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fractalgarden](https://appshunter.io/developer/630635848) | [Caleffi S.p.A](https://appshunter.io/developer/920722440) |

## What reviewers say

### Ermes Monitor

[App page](https://appshunter.io/ios/app/ermes-monitor/id937252851)

Monitor the energy efficiency of your equipment and devices remotely. Track the status of your monitored assets directly from your iPhone or iPad.

**Highlights:** Energy efficiency monitoring, Equipment status tracking, Device status tracking, Remote access, iPhone and iPad compatibility

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

**In-app purchases:** none


### Caleffi Code

[App page](https://appshunter.io/ios/app/caleffi-code/id1510312307)

Control your home's heating system remotely to optimize energy consumption and maintain comfort. Program temperatures room by room, adjust settings on the fly, and utilize special functions for events or absences.

**Highlights:** Remote temperature management, Room-by-room programming, Energy consumption optimization, Real-time monitoring, Customizable heating schedules, Boost and Eco functions

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

**In-app purchases:** none


## Frequently asked questions

### Is Ermes Monitor free?

Ermes Monitor is free to download, with no in-app purchases.

### Is Caleffi Code free?

Caleffi Code is free to download, with no in-app purchases.

### Do Ermes Monitor or Caleffi Code have ads?

Neither Ermes Monitor nor Caleffi Code shows ads.

### Which is updated more often, Ermes Monitor or Caleffi Code?

Ermes Monitor ships an update every 7 months, and Caleffi Code every 3 months. Most recently, Ermes Monitor was updated on October 18, 2026 and Caleffi Code on October 10, 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.*