Comparison

CallStar vs Mobex SMS

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

Head to head
About

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.

Highlights
  • Inbound call management
  • Versatile number service
  • Teleconference features
  • Least Cost Routing (LCR)
  • FLCR for international calls
Features
Read full description

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.

About

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.

Highlights
  • 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
Features
Read full description

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

CallStar4 screens
Mobex SMS4 screens

Verdict

The call

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

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

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 7 level
CallStar versus Mobex SMS: the parameters behind the verdict, then further details
ParameterCallStarMobex SMS
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 4 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.0 — better15.1
Further details — not scored
Size14 MB45 MB
Age rating4+4+
DeveloperNordcom OyMobex, Incorporated

Customer experience

CallStar

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Mobex SMS

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

CallStar

No in-app purchases

None

Mobex SMS

No in-app purchases

Questions

Is CallStar free?
CallStar is free to download, with no in-app purchases.
Is Mobex SMS free?
Mobex SMS is free to download, with no in-app purchases.
Which has better reviews, CallStar or Mobex SMS?
CallStar and Mobex SMS are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do CallStar or Mobex SMS have ads?
Neither CallStar nor Mobex SMS shows ads.
Which is updated more often, CallStar or Mobex SMS?
CallStar ships an update every 4 months, and Mobex SMS every 6 weeks. Most recently, CallStar was updated on November 1, 2026 and Mobex SMS on November 3, 2026.

Other comparisons