Comparison

ZISA vs GSC Assistant

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

Head to head

About

ZISA

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Real-time video support for field service technicians of Ziehm Imaging, its affiliated companies and its sales and service partners.

About

GSC Assistant

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GSC Assistant is a mobile client that works with the GSC series from Grandstream. It supports fast management and playback of GSC3516/3506/3510/3505 products on your mobile device. It also features fast management of GSCs in the same LAN, quick positioning, convenient playback of single GSC, custom partitioning of multiple GSCs, and unified playback for multiple zones. It also supports IPv4 and IPv6, and is compatible with complex network environments. GSC Assistant enables users to manage their GSCs’ playback more conveniently and quickly, allows GSCs to better integrate into the users' work and life.

Screenshots

ZISA3 screens

GSC Assistant4 screens

Verdict

The call

The clearest difference is iOS requirement: GSC Assistant at 12.0 against ZISA's 14.0. On price, update cadence, ads and in-app purchases 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

ZISA ships an update every 15 months, GSC Assistant every 18 months. The most recent releases landed on September 19, 2026 and September 21, 2026 respectively.

Scorecard1 real difference · 5 level

ZISA versus GSC Assistant: the parameters behind the verdict, then further details
Parameter	ZISA	GSC Assistant
Price	Free	Free
Update frequency	Every 15 months — better	Every 18 months
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	14.0	12.0 — better
Further details — not scored
Size	39 MB	38 MB
Age rating	4+	12+
Developer	Ziehm Imaging GmbH	Grandstream

In-app purchases

None

ZISA

No in-app purchases

None

GSC Assistant

No in-app purchases

Questions

Is ZISA free?

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

Is GSC Assistant free?

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

Do ZISA or GSC Assistant have ads?

Neither ZISA nor GSC Assistant shows ads.

Which is updated more often, ZISA or GSC Assistant?

ZISA ships an update every 15 months, and GSC Assistant every 18 months. Most recently, ZISA was updated on September 19, 2026 and GSC Assistant on September 21, 2026.