CallStar vs Mobex SMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CallStar
Manage inbound business calls, utilize versatile number services, and access teleconference features directly from your mobile device. Optimize outbound calls with Least Cost Routing. Requires configuration from a CallStar service provider.
- Inbound call management
- Versatile number service
- Teleconference features
- Least Cost Routing (LCR)
- FLCR for international calls
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CallStar is an advanced and easy-to-use mobile phone exchange service. CallStar enables you to manage the inbound calls of your business and utilize versatile number service and teleconference features straight from your mobile device. You can also use Least Cost Routing for your national and internation outbound calls (LCR and FLCR). Currently, we only serve companies operating in Finland. NOTE: To start using the CallStar application, you will need to configure the settings and the login credentials from your CallStar service provider. If your company is not using the CallStar service, there's no benefit from this application for you. In such case, please do not download or rate the application.
Mobex SMS
Send and receive SMS messages on iOS devices using a virtual number that syncs with your desktop application. Integrate with Microsoft 365 for secure, single sign-on access and text contacts from Outlook or your employee directory. Archive messages for compliance.
- Send/receive SMS on iOS
- Virtual number support
- Microsoft 365 integration
- Text Outlook/Employee Directory contacts
- Synchronized desktop app
- Secure message storage
- Automatic message archiving
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Send/receive SMS messages on your iOS mobile devices, using the same Mobex SMS virtual number you text with on your Microsoft 365 desktop. Start a conversation on, say, your Microsoft Teams desktop, and keep it going when you’re on the move. Text using a virtual number in your own local area or country code, or simply use your existing business number to text and call. Mobex SMS is fully integrated with Microsoft 365 so you can enjoy single sign-on security via Microsoft authentication and send messages to your contacts stored in Outlook, your employee directory or mobile phone. As new texts arrive, Mobex SMS will alert you on all your mobile devices and desktop applications, and because it stores every text message securely in Microsoft Azure, you can archive them as email to stay fully compliant. • Easy to use • Virtual number • Text Outlook and Employee Directory Contacts • Synchronized with Desktop App • Live message status notifications • Secure Access & Message Storage • Automatic Message Archive • No SIM card required
Screenshots
Verdict
The clearest difference is update cadence: Mobex SMS at every 6 weeks against CallStar's every 4 months. CallStar's advantage is iOS requirement (8.0 vs 15.1). On price, rating, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for CallStar against 5.0 for Mobex SMS. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
CallStar ships an update every 4 months, Mobex SMS every 6 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | CallStar | Mobex SMS |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Number of ratings | 1 | 1 |
| Update frequency | Every 4 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 14 MB | 45 MB |
| Age rating | 4+ | 4+ |
| Developer | Nordcom Oy | Mobex, Incorporated |
Customer experience
CallStar
Mobex SMS
In-app purchases
CallStar
No in-app purchases
Mobex SMS
No in-app purchases








