UKG iSeries vs ESI eMobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UKG iSeries
Empower employees and managers to manage time and access business information on the go. This mobile solution allows users to stay productive from anywhere, facilitating efficient work for those on the road or away from their desks.
- Mobile time management
- Access UKG iSeries Central
- On-the-go productivity
- Managerial access
- Employee task focus
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Mobile devices are changing how people interact and conduct business. It’s increasingly common for employees to use smartphones to stay productive while on the road or away from their desks. As part of the Next Generation of UKG iSeries Central, UKG Mobile for iSeries empowers users and managers to leverage their smartphone devices to access UKG iSeries Central and manage time on the go. Nurses on the floor, salespeople in the field, managers on the shop floor, and employees on business trips can access UKG iSeries Central when and where they need to, enabling them to work efficiently and focus on their tasks at hand. NOTE: To enable this application your employer must have UKG iSeries Central server software configured for UKG Mobile for iSeries. Contact your system administrator for details.
ESI eMobile
This business phone system app extends your office phone capabilities to your mobile device. Access voicemails, contacts, call recording, and manage extension preferences on the go. Communicate with colleagues and the outside world as if you were at your desk.
- Voicemail access
- Coworker directory
- Personal contacts
- Call recording
- Extension preference management
- Conference calls
- Coworker availability
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ESI’s eMobile™ application for iOS brings your eSIP Evolution Series™ business phone system extension with you, wherever you may be! Access voicemails, coworkers directory and personal contacts, and call recording features from anywhere. Manage your extension preferences and even conference calls from the palm of your hand. See your coworkers’ availability and easily communicate with them, as well as the rest of the world, as if you were sitting in front of your ESI desk phone. *Must be used with ESI’s eSIP Evolution Series™ phone system - e-series or x-series. *Contact your Certified ESI Partner for more information.
Screenshots
Verdict
The clearest difference is rating: ESI eMobile at 3.1 against UKG iSeries's 1.1. ESI eMobile also leads on review sentiment (33% vs 0%) and iOS requirement (11.0 vs 16.4). On price, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ESI eMobile holds the better App Store score, 3.1 against 1.1. Both are backed by a comparable volume of ratings — 26 and 12 respectively. Written reviews point the same way: 0% of UKG iSeries's written reviews are positive against 33% of ESI eMobile's.
UKG iSeries ships an update every 4 months, ESI eMobile every 7 months. Both last shipped on October 24, 2026.
| Parameter | UKG iSeries | ESI eMobile |
|---|---|---|
| Price | Free | Free |
| Rating | 1.1 (26 ratings) | 3.1 (12 ratings) — better |
| Positive reviews | 0.0% of reviews | 33.3% of reviews — better |
| Number of ratings | 26 — better | 12 |
| Update frequency | Every 4 months — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.4 | 11.0 — better |
| Further details — not scored | ||
| Size | 37 MB | 70 MB |
| Age rating | 4+ | 4+ |
| Developer | Kronos Incorporated | Estech Systems, Inc |
Customer experience
UKG iSeries
ESI eMobile
In-app purchases
UKG iSeries
No in-app purchases
ESI eMobile
No in-app purchases
Questions
Is UKG iSeries free?
Is ESI eMobile free?
Which has better reviews, UKG iSeries or ESI eMobile?
Do UKG iSeries or ESI eMobile have ads?
Which is updated more often, UKG iSeries or ESI eMobile?
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