# GDMS vs SIPBlue 2.0

The clearest difference is rating: GDMS at 4.7 against SIPBlue 2.0's 4.2. GDMS also leads on iOS requirement (13.0 vs 15.6). SIPBlue 2.0's advantage is update cadence (monthly vs every 3 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

GDMS holds the better App Store score, 4.7 against 4.2. Both are backed by a comparable volume of ratings — 7 and 6 respectively.

GDMS ships an update every 3 months, SIPBlue 2.0 monthly. The most recent releases landed on August 5, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | GDMS | SIPBlue 2.0 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (7 ratings)](https://appshunter.io/ios/app/gdms/id1501322947/reviews)** | [4.2 (6 ratings)](https://appshunter.io/ios/app/sipblue-20/id6466404244/reviews) |
| Number of ratings | **7** | 6 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | Free |
| Size | 15 MB | 54 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Grandstream](https://appshunter.io/developer/951547763) | [QuestBlue Systems, Inc](https://appshunter.io/developer/1518813567) |

## What reviewers say

### GDMS

[App page](https://appshunter.io/ios/app/gdms/id1501322947)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### SIPBlue 2.0

[App page](https://appshunter.io/ios/app/sipblue-20/id6466404244)

This communication app offers secure, high-definition voice and video calls, instant messaging, and SMS/MMS services. It features end-to-end encryption, call history, and an intuitive interface for seamless connectivity anywhere, anytime.

**Highlights:** HD voice and video calls, Instant messaging, SMS/MMS services, End-to-end encryption, Call history, QR code login, Auto provisioning

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GDMS free?

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

### Is SIPBlue 2.0 free?

SIPBlue 2.0 is free to download, with no in-app purchases.

### Which has better reviews, GDMS or SIPBlue 2.0?

GDMS is rated higher. GDMS averages 4.7 out of 5 from 7 ratings, while SIPBlue 2.0 averages 4.2 from 6 ratings.

### Do GDMS or SIPBlue 2.0 have ads?

Neither GDMS nor SIPBlue 2.0 shows ads.

### Which is updated more often, GDMS or SIPBlue 2.0?

GDMS ships an update every 3 months, and SIPBlue 2.0 monthly. Most recently, GDMS was updated on August 5, 2026 and SIPBlue 2.0 on September 15, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*