# Colin International Calls

> Affordable international VoIP calls with high audio quality and low battery usage. (iPhone/iPad app by Anwar Abdulkhader.)

- Source: https://appshunter.io/ios/app/colin-international-calls/id1436943820 (this page in markdown: same URL + `.md`)
- Developer: [Anwar Abdulkhader](https://appshunter.io/developer/1355618096)
- Category: Social Networking, Business
- Price: Free
- Rating: 4.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 8.1 · 35 MB
- Languages: English
- Released: 2018-09-29
- Data updated: 2026-06-25
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/colin-international-calls/id1436943820/reviews.md

## What is Colin International Calls?

Colin app offers simple User Interface and superb audio quality VoIP calls in affordable rates. Colin works on all iOS devices and supports calling over WIFI/EDGE/3G/LTE. In order to use this app end users can register with their mobile number.

Key features include:


1. Lowest battery usage with highest reliability / stability on App Store.
2. Lowest latency of all IOS softphones.
3. Bandwidth normalization.
4. Voice/Video packet negotiation
5. Bluetooth support.
6. Excellent audio quality, even on older devices.
7. Supports calling over WIFI/EDGE/3G/LTE.
8.Background / multitasking support.
9.  Integration with the native ios contact list.
10. Speakerphone mute and hold.

## Key features

- Affordable international calls
- Superb audio quality
- Low latency
- Minimal battery usage
- Background/multitasking support
- Native contact list integration
- Bluetooth support


## Frequently asked questions about Colin International Calls

### What devices does Colin International Calls support?

Colin International Calls is compatible with all iOS devices, including iPhone, iPad, and iPod. It supports calling over various network types like WIFI, EDGE, 3G, and LTE.

### How does Colin International Calls handle battery usage?

The app is designed for the lowest battery usage on the App Store, ensuring high reliability and stability. This optimization allows for extended use without significant drain on your device's power.

### What is the audio quality like on Colin International Calls?

Colin International Calls boasts superb audio quality and the lowest latency among iOS softphones. It even provides excellent audio performance on older devices.

### Can I use Colin International Calls in the background?

Yes, Colin International Calls supports background and multitasking functionality. This means you can continue to receive calls and use other apps simultaneously.

### Does Colin International Calls integrate with my contacts?

Yes, the app integrates seamlessly with your native iOS contact list. This makes it easy to initiate calls to your existing contacts directly through the application.

### What is the rating for Colin International Calls?

Colin International Calls has a rating of 4.0 stars from 1 rating. This indicates a generally positive user experience based on available feedback.

### When was Colin International Calls last updated?

The latest version of Colin International Calls is 1.2, and it was last updated on October 10, 2018. The app was initially released on September 29, 2018.

### Is Colin International Calls free to use?

Yes, Colin International Calls is available for free. There are no upfront costs to download or use the basic calling features of the application.

## Version history (last 1 release)

### 1.2 — 2018-10-10

Minor bug fixed.

## Apps similar to Colin International Calls

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [夜嗨直播-视频直播聊天交友软件](https://appshunter.io/ios/app/id1493905800) | — | Free | Social Networking |
| [HizmetSana Consumer](https://appshunter.io/ios/app/hizmetsana-consumer/id1474970160) | — | Free | Social Networking |
| [RingbiPlus](https://appshunter.io/ios/app/ringbiplus/id1473238020) | — | Free | Social Networking |
| [Offermio](https://appshunter.io/ios/app/offermio/id1477941260) | — | Free | Social Networking |
| [JetSMS - Kurumsal Toplu SMS](https://appshunter.io/ios/app/jetsms-kurumsal-toplu-sms/id935246700) | — | Free | Social Networking |

## More apps by Anwar Abdulkhader

- [Odio Dialer Plus](https://appshunter.io/ios/app/odio-dialer-plus/id1383603095)
- [Exotel](https://appshunter.io/ios/app/exotel/id1385365923)
- [Azadi International Calls](https://appshunter.io/ios/app/azadi-international-calls/id1423125218)
- [Peble](https://appshunter.io/ios/app/peble/id1480340418)
- [Vibex](https://appshunter.io/ios/app/vibex/id1480802097)

All apps by Anwar Abdulkhader: https://appshunter.io/developer/1355618096

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-25.*