# Castel SIP vs Ringie

The clearest difference is update cadence: Ringie at every 4 weeks against Castel SIP's every 4 months. Ringie also leads on iOS requirement (11.0 vs 15.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Castel SIP ships an update every 4 months, Ringie every 4 weeks. The most recent releases landed on June 9, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | Castel SIP | Ringie |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 4 weeks** |
| Monetization | Free | — |
| Size | 84 MB | 29 MB |
| Requires iOS | 15.5 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Castel](https://appshunter.io/developer/566301834) | [Eldho John](https://appshunter.io/developer/1366570818) |

## What reviewers say

### Castel SIP

[App page](https://appshunter.io/ios/app/castel-sip/id566301831)

This application functions as a SIP intercom softphone, enabling users to make and receive audio and video calls from IP intercom stations on their mobile devices. It allows for communication and remote door opening, working through Wi-Fi and cellular data networks.

**Highlights:** Audio and video calls, IP intercom station integration, Remote door opening, Address book with favorites, Call history, Remote commands during calls

**Features:** macOS Compatibility

**In-app purchases:** none


### Ringie

[App page](https://appshunter.io/ios/app/ringie/id1589759248)

**In-app purchases:** none


## Frequently asked questions

### Is Castel SIP free?

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

### Is Ringie free?

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

### Do Castel SIP or Ringie have ads?

Neither Castel SIP nor Ringie shows ads.

### Which is updated more often, Castel SIP or Ringie?

Castel SIP ships an update every 4 months, and Ringie every 4 weeks. Most recently, Castel SIP was updated on June 9, 2026 and Ringie on May 16, 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.*