Comparison

ZuluCall vs STN UC

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

Head to head

About

ZuluCall

Features

Read full description

ZuluCall is a SIP client for ZuluPBX, makes communication easy & cost-effective. o App long description ZuluCall is a SIP client for any ZuluPBX. It makes communication easy and cost-effective. Key features of ZuluCall Dialer are: o Audio Calls o Video Calls o Conferencing o Call Transfer o Call Hold o Mute/ Unmute o Call History o Last Call Redial o Phonebook o Instant Messaging (Chat) o High quality voice and video o Audio & Video codec support o Multiple calls management o Advanced call statistics Bluetooth headset support

About

STN UC

This application functions as a SIP-based softphone, enabling users to make and receive calls and instant messages over Wi-Fi or cellular data. It integrates with a specific PBX system to support push notifications for incoming calls and messages, even when the app is not actively running.

Highlights

SIP-based softphone
Wi-Fi or 4G/LTE calls
Instant messaging
Push notifications for calls
Push notifications for messages
Interworks with PortSIP PBX

Features

Read full description

STN-UC is a SIP-based softphone for iPhone that uses Wi-Fi or 4G/LTE connection to make and receive calls and Instant Messages. Interworking with PortSIP PBX, STN-UC support push notification, which allows it receive calls and messages even it was force terminated.

Screenshots

ZuluCall4 screens

STN UC3 screens

Verdict

The call

The clearest difference is update cadence: STN UC at every 2 months against ZuluCall's every 6 months. On price, ads, in-app purchases and device support 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.

UpkeepUpdate frequency

ZuluCall ships an update every 6 months, STN UC every 2 months. The most recent releases landed on October 25, 2026 and October 14, 2026 respectively.

Scorecard1 real difference · 7 level

ZuluCall versus STN UC: the parameters behind the verdict, then further details
Parameter	ZuluCall	STN UC
Price	Free	Free
Positive reviews	—	0.0% of reviews
Update frequency	Every 6 months	Every 2 months — better
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	12.0	11.0 — better
Further details — not scored
Size	104 MB	54 MB
Age rating	4+	4+
Developer	ZuluCare, LLC	PortSIP Solutions, Inc.

In-app purchases

None

ZuluCall

No in-app purchases

None

STN UC

No in-app purchases

Questions

Is ZuluCall free?

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

Is STN UC free?

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

Do ZuluCall or STN UC have ads?

Neither ZuluCall nor STN UC shows ads.

Which is updated more often, ZuluCall or STN UC?

ZuluCall ships an update every 6 months, and STN UC every 2 months. Most recently, ZuluCall was updated on October 25, 2026 and STN UC on October 14, 2026.