# USSPA SmartApp vs ZenCom

The clearest difference is update cadence: ZenCom at monthly against USSPA SmartApp's every 3 months. USSPA SmartApp's advantage is iOS requirement (11.0 vs 15.0). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

USSPA SmartApp ships an update every 3 months, ZenCom monthly. The most recent releases landed on September 11, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | USSPA SmartApp | ZenCom |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | **40.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | Free |
| Size | 23 MB | 62 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MEDIA FACTORY Czech Republic a.s.](https://appshunter.io/developer/937782577) | [Zennio](https://appshunter.io/developer/665852768) |

## What reviewers say

### USSPA SmartApp

[App page](https://appshunter.io/ios/app/usspa-smartapp/id937782578)

Remotely manage your spa's functions, including water temperature, filtration, and energy-saving modes, from your iPhone or iPad. Ensure your spa is always ready for use with intuitive control over all its features.

**Highlights:** Remote spa control, Monitor spa status, Adjust water heating, Set filtration times, Configure energy-saving modes, Intuitive user interface

**Features:** macOS Compatibility

**In-app purchases:** none


### ZenCom

[App page](https://appshunter.io/ios/app/zencom/id1444603817)

Remotely monitor your Zennio Intercom. See visitors, communicate with them, and unlock your door from any location.

**Highlights:** Remote intercom access, See visitors at your door, Two-way audio communication, Remote door unlocking, Global accessibility

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is USSPA SmartApp free?

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

### Is ZenCom free?

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

### Do USSPA SmartApp or ZenCom have ads?

Neither USSPA SmartApp nor ZenCom shows ads.

### Which is updated more often, USSPA SmartApp or ZenCom?

USSPA SmartApp ships an update every 3 months, and ZenCom monthly. Most recently, USSPA SmartApp was updated on September 11, 2026 and ZenCom on September 3, 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.*