# AbtoVoIPClient vs C

The clearest difference is update cadence: C at every 2 weeks against AbtoVoIPClient's every 5 months. 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.

AbtoVoIPClient ships an update every 5 months, C every 2 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | AbtoVoIPClient | C |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/abtovoipclient/id527208668/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 12 MB | 81 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sviatoslav Volodymyruvych Litynsky Private Enterpreneur](https://appshunter.io/developer/329178119) | [CONVENIENCE PAY TECHNOLOGIES LTD](https://appshunter.io/developer/1697096809) |

## What reviewers say

### AbtoVoIPClient

[App page](https://appshunter.io/ios/app/abtovoipclient/id527208668)

This application provides voice and video calling capabilities, along with text chat, for users with SIP accounts. It supports direct calls between clients and offers secure communication options. The app integrates with native iOS call features for a seamless user experience.

**Highlights:** Voice calls, Video calls, Text chat, Works with all popular SIP servers, Direct calls between clients, Secure calls using SRTP/ZRTP, CallKit integration

**Features:** macOS Compatibility

**In-app purchases:** none


### C

[App page](https://appshunter.io/ios/app/c-pass/id6739937179)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AbtoVoIPClient free?

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

### Is C free?

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

### Do AbtoVoIPClient or C have ads?

Neither AbtoVoIPClient nor C shows ads.

### Which is updated more often, AbtoVoIPClient or C?

AbtoVoIPClient ships an update every 5 months, and C every 2 weeks. Most recently, AbtoVoIPClient was updated on October 23, 2026 and C on October 25, 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.*