# SIA Mobile vs Calltec Softphone

The clearest difference is iOS requirement: SIA Mobile at 15.6 against Calltec Softphone's 17.6. On price, update cadence, 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.

SIA Mobile ships an update every 4 months, Calltec Softphone every 2 months. The most recent releases landed on October 27, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | SIA Mobile | Calltec Softphone |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 64 MB | 17 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [System - Desenvolvimento de Software Ltda.](https://appshunter.io/developer/1520705514) | [AMAX SOFTWARE HOUSE LTDA](https://appshunter.io/developer/1693262417) |

## What reviewers say

### SIA Mobile

[App page](https://appshunter.io/ios/app/sia-mobile/id1574958492)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Calltec Softphone

[App page](https://appshunter.io/ios/app/calltec-softphone/id6499033363)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SIA Mobile free?

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

### Is Calltec Softphone free?

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

### Do SIA Mobile or Calltec Softphone have ads?

Neither SIA Mobile nor Calltec Softphone shows ads.

### Which is updated more often, SIA Mobile or Calltec Softphone?

SIA Mobile ships an update every 4 months, and Calltec Softphone every 2 months. Most recently, SIA Mobile was updated on October 27, 2026 and Calltec Softphone on November 4, 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.*