# Mercury @ Work vs Smart Fan US

The clearest difference is update cadence: Smart Fan US at monthly against Mercury @ Work's every 3 months. Smart Fan US also leads on iOS requirement (14.0 vs 16.0). 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.

Mercury @ Work ships an update every 3 months, Smart Fan US monthly. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | Mercury @ Work | Smart Fan US |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Size | 138 MB | 66 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mercury Wireless Inc](https://appshunter.io/developer/1482429992) | [Seitron Spa](https://appshunter.io/developer/1222487753) |

## What reviewers say

### Mercury @ Work

[App page](https://appshunter.io/ios/app/mercury-work/id1623408395)

**Features:** Vision Pro support

**In-app purchases:** none


### Smart Fan US

[App page](https://appshunter.io/ios/app/smart-fan-us/id6480203693)

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

**In-app purchases:** none


## Frequently asked questions

### Is Mercury @ Work free?

Mercury @ Work is free to download, with no in-app purchases.

### Is Smart Fan US free?

Smart Fan US is free to download, with no in-app purchases.

### Do Mercury @ Work or Smart Fan US have ads?

Neither Mercury @ Work nor Smart Fan US shows ads.

### Which is updated more often, Mercury @ Work or Smart Fan US?

Mercury @ Work ships an update every 3 months, and Smart Fan US monthly. Most recently, Mercury @ Work was updated on November 7, 2026 and Smart Fan US on November 4, 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.*