# Caleffi Code vs FLX

The clearest difference is iOS requirement: Caleffi Code at 13.0 against FLX's 15.0. On price, ads, 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.

## The numbers

| Metric | Caleffi Code | FLX |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 23.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Free | — |
| Size | 195 MB | 37 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Caleffi S.p.A](https://appshunter.io/developer/920722440) | [SISGEO S.r.l](https://appshunter.io/developer/1439891075) |

## What reviewers say

### 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


### FLX

[App page](https://appshunter.io/ios/app/flx-rail/id6449735068)

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

**In-app purchases:** none


## Frequently asked questions

### Is Caleffi Code free?

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

### Is FLX free?

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

### Do Caleffi Code or FLX have ads?

Neither Caleffi Code nor FLX shows ads.

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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.*