# OneWork by e& vs Smart Systems ESS

The clearest difference is update cadence: Smart Systems ESS at every 4 days against OneWork by e&'s monthly. Smart Systems ESS also leads on iOS requirement (15.6 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.

OneWork by e& ships an update monthly, Smart Systems ESS every 4 days. The most recent releases landed on September 21, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | OneWork by e& | Smart Systems ESS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/onework-by-e-and/id6733242661/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free | — |
| Size | 149 MB | 12 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Emirates Telecommunications Corporation](https://appshunter.io/developer/487285094) | [Smart Software Systems And Solutions](https://appshunter.io/developer/1871115025) |

## What reviewers say

### OneWork by e&

[App page](https://appshunter.io/ios/app/onework-by-e-and/id6733242661)

Enhance team communication and mobility with real-time colleague presence, integrated calling, and seamless call toggling between devices. Manage calls and voicemails efficiently, with all contacts automatically updated.

**Highlights:** Real-time colleague presence tracking, Integrated softphone for calls, Call toggling between mobile and fixed lines, PBX services with call transfer, Shared voicemail access, Automatic contact book updates

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

**In-app purchases:** none


### Smart Systems ESS

[App page](https://appshunter.io/ios/app/smart-systems-ess/id6758136855)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OneWork by e& free?

OneWork by e& is free to download, with no in-app purchases.

### Is Smart Systems ESS free?

Smart Systems ESS is free to download, with no in-app purchases.

### Do OneWork by e& or Smart Systems ESS have ads?

Neither OneWork by e& nor Smart Systems ESS shows ads.

### Which is updated more often, OneWork by e& or Smart Systems ESS?

OneWork by e& ships an update monthly, and Smart Systems ESS every 4 days. Most recently, OneWork by e& was updated on September 21, 2026 and Smart Systems ESS on September 8, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*