Comparison

GDMS vs J

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

Head to head
About

GDMS

This app offers centralized, secure management for Grandstream audio/video products. Administrators can easily add devices by scanning codes, configure accounts, upgrade firmware, and receive real-time alerts about device status.

Highlights
  • Scan code to add devices
  • Configure accounts
  • Upgrade device firmware
  • Remote device start
  • Real-time device monitoring
  • Push alert messages
Features
Read full description

GDMS mobile application provides centralized, secure and zero-operation management methods and solutions for Grandstream audio/video products users. The device administrators can work on mobile devices by scanning the codes to add devices, configure accounts/upgrade devices firmware quickly, and the alert messages can be pushed to mobile client. Including: 1. Scan code to add device: Support to scan the barcodes of a batch of devices to add the devices to GDMS platform. 2. Manage device: Support to configure accounts for devices, upgrade devices firmware, and start the devices remotely. 3. Monitor device in real-time: Push the device registration, abnormal status, alert messages to mobile management client.

About

J

Easily manage and configure compatible J-Tech Digital A/V equipment directly from your mobile device. Control routing settings, save configurations, and connect devices without needing a physical keyboard or mouse.

Highlights
  • Control routing settings
  • Manage multiple devices
  • Remember device settings
  • Save/Load routing settings
  • Configure A/V equipment
  • Connect devices remotely
Features
Read full description

Control your J-Tech Digital A/V products from your mobile device. Our lightweight app provides all the tools you need to manage compatible audiovisual equipment from our wide range of products. With video walls, matrix switches, AV-over-IP, and more - we've got you covered for your home or business, and with this app you can configure and connect your new devices without a physical keyboard or mouse. Features • Control routing settings • Manage multiple devices • Remember device settings even after you close your app • Save/Load commonly-used routing settings Compatible Models include: • JTECH-H264-N2N-R • JTECH-H264-N2N-T • JTECH-4K88-EX2 • JTECH-4KM44A • JTECH-4x4-HDBaseT • JTECH-8X8-EX50M • JTECH-8X8-H20 • JTECH-ENCH4 • JTECH-ENCH4A • JTECH-MX443-UHD • JTECH-MX445-UHD • JTECH-MXT40 • JTECH-MXT40v2 • JTECH-MXT60 • JTECH-NS24 • JTECH-NS48 • JTECH-VW09 • JTECH-VWM04 • JTECH-VWM90 • JTECH-4KMX256A • JTECH-4KMX256-EX100 • JTECH-88B

Screenshots

GDMS4 screens
J4 screens

Verdict

The call

The clearest difference is rating: GDMS at 4.7 against J's 2.6. J's advantage is update cadence (fortnightly vs every 3 months). On price, review sentiment, ratings volume 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

GDMS holds the better App Store score, 4.7 against 2.6. Both are backed by a comparable volume of ratings — 7 and 5 respectively. Written reviews split almost evenly too, at 50% and 50% positive.

UpkeepUpdate frequency

GDMS ships an update every 3 months, J fortnightly. The most recent releases landed on October 2, 2026 and September 26, 2026 respectively.

Scorecard2 real differences · 8 level
GDMS versus J: the parameters behind the verdict, then further details
ParameterGDMSJ
PriceFreeFree
Rating4.7 (7 ratings) — better2.6 (5 ratings)
Positive reviews50.0% of reviews50.0% of reviews
Number of ratings7 — better5
Update frequencyEvery 3 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size15 MB59 MB
Age rating4+4+
DeveloperGrandstreamJ-Tech Digital, Inc

Customer experience

GDMS

All ratings7 ratings
Positive85.7%
Neutral14.3%
Negative0.0%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

J

All ratings5 ratings
Positive40.0%
Neutral0.0%
Negative60.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

GDMS

No in-app purchases

None

J

No in-app purchases

Questions

Is GDMS free?
GDMS is free to download, with no in-app purchases.
Is J free?
J is free to download, with no in-app purchases.
Which has better reviews, GDMS or J?
GDMS is rated higher. GDMS averages 4.7 out of 5 from 7 ratings, while J averages 2.6 from 5 ratings.
Do GDMS or J have ads?
Neither GDMS nor J shows ads.
Which is updated more often, GDMS or J?
GDMS ships an update every 3 months, and J fortnightly. Most recently, GDMS was updated on October 2, 2026 and J on September 26, 2026.

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