# s5a vs AF On

The clearest difference is update cadence: AF On at every 11 days against s5a's every 18 months. s5a's advantage is iOS requirement (13.0 vs 17.6). 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.

s5a ships an update every 18 months, AF On every 11 days. The most recent releases landed on October 11, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | s5a | AF On |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 11 days** |
| Monetization | Free | — |
| Size | 13 MB | 42 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [S5A](https://appshunter.io/developer/1495192506) | [AF Systems S.p.A.](https://appshunter.io/developer/1788520893) |

## What reviewers say

### s5a

[App page](https://appshunter.io/ios/app/s5a/id1497161831)

Control your entire heating and cooling system remotely. Adjust settings based on your schedule, monitor temperature and humidity in different zones, and manage unexpected events to optimize comfort and reduce costs.

**Highlights:** Remote system management, Zone temperature monitoring, Humidity level reading, Scheduling by time bands, Heating and cooling control, Air exchange management, Domestic hot water control

**Features:** macOS Compatibility

**In-app purchases:** none


### AF On

[App page](https://appshunter.io/ios/app/af-on-site/id6740144413)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is s5a free?

s5a is free to download, with no in-app purchases.

### Is AF On free?

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

### Do s5a or AF On have ads?

Neither s5a nor AF On shows ads.

### Which is updated more often, s5a or AF On?

s5a ships an update every 18 months, and AF On every 11 days. Most recently, s5a was updated on October 11, 2026 and AF On on October 8, 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.*