Comparison

Mobile ZAC vs ConnectUC

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

Head to head
About

Mobile ZAC

Transform your mobile device into a fully functional business phone. This app integrates with Zultys systems to provide remote and mobile employees with essential communication tools, including video conferencing, instant messaging, and call management.

Highlights
  • Video conferencing
  • Scheduled conferences
  • Call logs with filtering
  • Instant messaging
  • Call attached data
  • Retrieve active calls
  • Agent roles & queue monitor
Read full description

Wherever your job takes you, make your mobile device your business phone. Mobile ZAC allows remote and mobile employees to manage business communications while utilizing the same tools as Zultys Advanced Communicator (ZAC) and our browser-based Web ZAC. We bring significant cost savings and reliability to our customers by including our mobile app with every user bundle for every Zultys system. Feature Overview: • Support for AI Tools: Real-time closed captions, real-time sentiment analysis, and live transcription with searchable post-call transcripts. • Mobile Network Calling: Place outbound and receive inbound business calls over your mobile carrier network. • iOS Recents Control: A configurable option to control whether Mobile ZAC calls appear in the native Phone app’s Recents list. • Department Filtering: Quickly filter company contact list by department or sub-department, and hide system services like auto attendants and call groups. • Single Sign-On (SSO) Support: SAML SSO has been developed and tested with Entra ID and ClassLink, with the potential to support other identity providers such as Okta, Duo, Auth0, and OneLogin. • Inbound and Outbound SMS and MMS for Call Group Agents: Agents in Operator, ACD, and ICC groups can send and receive SMS and MMS messages. • Web Chat for Call Group Agents: Agents in Operator, ACD, and ICC groups can now receive real-time message notifications from website visitors and respond. • Video Conferences: Easily host or join a conference, whether it’s for a group or one-on-one. Choose from three different modes to match your preferences: Speaker, Grid, or Pin an individual user. • Scheduled Conferences: Now users can view, join, and schedule conferences directly from the mobile app. • Call Logs: You can view complete phone call records and review the call history. Easily find the exact information you need with new filter and sort options. • Emojis: Elevate your conversations with native emojis. • Call Attached Data: Accessing and completing Call Attached Data while on the go is now easier than ever. • Retrieve Call: Move an active call from one device to another quickly and effortlessly. This feature gives you flexibility and an uninterrupted call experience. • Agent Roles & Queue Monitor: Agent roles and queue monitor have now been added for call center functionality on the go. More Feature Highlights: • Access Call Attached Data, recordings, transcripts, and voicemails from the call log • View presenter screen sharing for one-on-one and conference calls • System speed dial access • Ability for users to reply to and forward any message • Password reset link • Network switching between cellular and Wi-Fi networks while maintaining calls • Real-time presence status and presence notes • Instant message with internal and external parties with IM alerts • SMS support • Call group support Mobile ZAC is supported on systems running MX version Release 17 and above. Access to the latest capabilities requires MX Release 19.

About

ConnectUC

This app provides comprehensive business phone and unified communications features, including voice calling, SMS, visual voicemail with transcriptions, and co-worker presence. It integrates PBX functionality into a single application, accessible across web, desktop, and mobile devices.

Highlights
  • Voice calling with transfers and conference calling
  • Visual voicemail with transcriptions
  • SMS using business number
  • Co-worker presence and status
  • All-in-one PBX functionality
Features
Read full description

ConnectUC gives you full access to your business phone and unified communications with voice calling, text messaging, voicemail, co-worker presence, meetings, and more. It works across web, desktop, and mobile apps. Calls - Stay connected, no matter where you are! With the ability to take your extension with you, you can easily place or receive calls with features like call transfers, conference calling, call history, recordings and more. Visual Voicemail with Transcriptions - Never miss a voicemail with visual voicemail that includes transcriptions, allowing you to quickly and easily read your messages. All-in-One App - Access PBX functionality seamlessly within one application, eliminating the need for multiple portals. Co-Worker Status - Real-time coworker phone status with integrated presence allows users at a glance to see the phone and status of users throughout the company, whether they are using their deskphone or ConnectUC. SMS - Send and receive text messages using SMS with your business phone number associated with your extension, without needing to use your personal phone number. Messaging for Chat and Collaboration (coming soon) - Chat and collaborate with your team over messages with individual and group messaging. Meetings (coming soon) - Group meetings with video and screen sharing with anyone inside or outside of your company. Flexible Fax (coming soon) - Send and receive faxes directly from the UC Client, complete with multiple numbers and cover pages. Keep in mind: ConnectUC was built to work with your UCaaS service and requires a UCaaS account.

Screenshots

Mobile ZAC4 screens
ConnectUC4 screens

Verdict

The call

The clearest difference is update cadence: ConnectUC at fortnightly against Mobile ZAC's every 3 months. On price, rating, review sentiment and ratings volume 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

On the App Store both sit at effectively the same score — 4.0 for Mobile ZAC against 3.9 for ConnectUC. Both are backed by a comparable volume of ratings — 49 and 89 respectively. Written reviews are what separate them: 59% of Mobile ZAC's written reviews are positive against 61% of ConnectUC's.

UpkeepUpdate frequency

Mobile ZAC ships an update every 3 months, ConnectUC fortnightly. The most recent releases landed on September 14, 2026 and September 8, 2026 respectively.

Scorecard1 real difference · 9 level
Mobile ZAC versus ConnectUC: the parameters behind the verdict, then further details
ParameterMobile ZACConnectUC
PriceFreeFree
Rating4.0 (49 ratings) — better3.9 (89 ratings)
Positive reviews59.1% of reviews60.6% of reviews — better
Number of ratings4989 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS15.1 — better16.4
Further details — not scored
Size60 MB155 MB
Age rating4+4+
DeveloperZultys, IncConnectUC LLC

Customer experience

Mobile ZAC

All ratings44 ratings
Positive79.5%
Neutral2.3%
Negative18.2%
Written reviews22 reviews
Positive59.1%
Neutral9.1%
Negative31.8%

ConnectUC

All ratings89 ratings
Positive70.8%
Neutral9.0%
Negative20.2%
Written reviews33 reviews
Positive60.6%
Neutral15.2%
Negative24.2%

In-app purchases

None

Mobile ZAC

No in-app purchases

None

ConnectUC

No in-app purchases

Questions

Is Mobile ZAC free?
Mobile ZAC is free to download, with no in-app purchases.
Is ConnectUC free?
ConnectUC is free to download, with no in-app purchases.
Which has better reviews, Mobile ZAC or ConnectUC?
Mobile ZAC is rated higher. Mobile ZAC averages 4.0 out of 5 from 49 ratings, while ConnectUC averages 3.9 from 89 ratings.
Do Mobile ZAC or ConnectUC have ads?
Neither Mobile ZAC nor ConnectUC shows ads.
Which is updated more often, Mobile ZAC or ConnectUC?
Mobile ZAC ships an update every 3 months, and ConnectUC fortnightly. Most recently, Mobile ZAC was updated on September 14, 2026 and ConnectUC on September 8, 2026.

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