Comparison

UKG iSeries vs ESI eMobile

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Mobile time management
  • Access UKG iSeries Central
  • On-the-go productivity
  • Managerial access
  • Employee task focus
Read full description

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.

About

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.

Highlights
  • Voicemail access
  • Coworker directory
  • Personal contacts
  • Call recording
  • Extension preference management
  • Conference calls
  • Coworker availability
Features
Read full description

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

UKG iSeries4 screens
ESI eMobile4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

UKG iSeries ships an update every 4 months, ESI eMobile every 7 months. Both last shipped on October 24, 2026.

Scorecard3 real differences · 7 level
UKG iSeries versus ESI eMobile: the parameters behind the verdict, then further details
ParameterUKG iSeriesESI eMobile
PriceFreeFree
Rating1.1 (26 ratings)3.1 (12 ratings) — better
Positive reviews0.0% of reviews33.3% of reviews — better
Number of ratings26 — better12
Update frequencyEvery 4 months — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.411.0 — better
Further details — not scored
Size37 MB70 MB
Age rating4+4+
DeveloperKronos IncorporatedEstech Systems, Inc

Customer experience

UKG iSeries

All ratings26 ratings
Positive0.0%
Neutral3.8%
Negative96.2%
Written reviews43 reviews
Positive0.0%
Neutral4.7%
Negative95.3%

ESI eMobile

All ratings12 ratings
Positive41.7%
Neutral16.7%
Negative41.7%
Written reviews6 reviews
Positive33.3%
Neutral16.7%
Negative50.0%

In-app purchases

None

UKG iSeries

No in-app purchases

None

ESI eMobile

No in-app purchases

Questions

Is UKG iSeries free?
UKG iSeries is free to download, with no in-app purchases.
Is ESI eMobile free?
ESI eMobile is free to download, with no in-app purchases.
Which has better reviews, UKG iSeries or ESI eMobile?
ESI eMobile is rated higher. UKG iSeries averages 1.1 out of 5 from 26 ratings, while ESI eMobile averages 3.1 from 12 ratings.
Do UKG iSeries or ESI eMobile have ads?
Neither UKG iSeries nor ESI eMobile shows ads.
Which is updated more often, UKG iSeries or ESI eMobile?
UKG iSeries ships an update every 4 months, and ESI eMobile every 7 months. Most recently, UKG iSeries was updated on October 24, 2026 and ESI eMobile on October 24, 2026.

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