GDMS vs SIPBlue 2.0
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Scan code to add devices
- Configure accounts
- Upgrade device firmware
- Remote device start
- Real-time device monitoring
- Push alert messages
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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.
SIPBlue 2.0
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.
- HD voice and video calls
- Instant messaging
- SMS/MMS services
- End-to-end encryption
- Call history
- QR code login
- Auto provisioning
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SIPBlue 2.0 is the business phone that goes wherever you do. Make and receive HD voice and video calls, send and receive SMS and MMS, and message your team, all from one clean, intuitive app on your iPhone. At your desk, on the road, or working from home, your business number and everything attached to it comes with you. BUILT FOR THE WAY YOU WORK • HD voice and video calling with crystal-clear audio • Two-way SMS and MMS from your business number • Instant messaging for quick team collaboration • Complete call history: incoming, outgoing, and missed calls at a glance • Full dialpad, contacts, and recents in a single window SET UP IN SECONDS Scan a QR code and you're signed in. No manual configuration, no support ticket. Prefer to enter your own SIP credentials? That works too. Choose SMS, Voice, or both, and SIPBlue 2.0 configures itself to match. NEVER MISS A CALL Incoming calls and messages ring through with push notifications, even when the app is in the background. Missed something? Your call history shows exactly who called, when, and whether you picked up, so you can get back to them in one tap. FOR MSPs AND IT TEAMS SIPBlue 2.0 is built to deploy at scale. Auto-provisioning and QR-code onboarding let you roll out an entire team without touching a single device, and users are productive within minutes. Connect to your QuestBlue services using the domain, port, and transport settings from your QuBePBX. Fewer setup calls, happier clients. ONE APP, EVERY DEVICE SIPBlue 2.0 is available for iPhone, Mac, Windows, and Android, so your team stays connected on whatever device they're using. Download SIPBlue 2.0 and take your business phone with you.
Screenshots
Verdict
The clearest difference is rating: GDMS at 4.7 against SIPBlue 2.0's 4.3. GDMS also leads on iOS requirement (13.0 vs 18.2). On price, ratings volume, update cadence 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
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 4.3. Both are backed by a comparable volume of ratings — 7 and 7 respectively.
GDMS ships an update every 3 months, SIPBlue 2.0 every 2 months. Both last shipped on October 24, 2026.
| Parameter | GDMS | SIPBlue 2.0 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (7 ratings) — better | 4.3 (7 ratings) |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 7 | 7 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.2 |
| Further details — not scored | ||
| Size | 15 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | Grandstream | QuestBlue Systems, Inc |
Customer experience
GDMS
SIPBlue 2.0
In-app purchases
GDMS
No in-app purchases
SIPBlue 2.0
No in-app purchases









