# STXMobile vs RTFone

The clearest difference is iOS requirement: STXMobile at 15.0 against RTFone'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.

STXMobile ships an update every 4 months, RTFone every 8 months. The most recent releases landed on September 9, 2026 and August 4, 2026 respectively.

## The numbers

| Metric | STXMobile | RTFone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rtfone/id6470238592/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 8 months |
| Monetization | — | Free |
| Size | 101 MB | 15 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Nikolaus](https://appshunter.io/developer/1600112592) | [AMAX SOFTWARE HOUSE LTDA](https://appshunter.io/developer/1693262417) |

## What reviewers say

### STXMobile

[App page](https://appshunter.io/ios/app/stxmobile/id1600112590)

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

**In-app purchases:** none


### RTFone

[App page](https://appshunter.io/ios/app/rtfone/id6470238592)

This business application allows users to register and make audio and video calls using a SIP softphone. It provides a platform for professional communication on mobile devices.

**Highlights:** SIP softphone functionality, Audio call capabilities, Video call capabilities, User registration, Mobile communication

**In-app purchases:** none


## Frequently asked questions

### Is STXMobile free?

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

### Is RTFone free?

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

### Do STXMobile or RTFone have ads?

Neither STXMobile nor RTFone shows ads.

### Which is updated more often, STXMobile or RTFone?

STXMobile ships an update every 4 months, and RTFone every 8 months. Most recently, STXMobile was updated on September 9, 2026 and RTFone on August 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.*