# KvantPhone — Secure calling and messaging

> Secure calling and messaging (iPhone/iPad app by Arenim Infosec Kft..)

- Source: https://appshunter.io/ios/app/kvantphone/id1641683309 (this page in markdown: same URL + `.md`)
- Developer: [Arenim Infosec Kft.](https://appshunter.io/developer/1595599782)
- Category: Business
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 99 MB
- Languages: English, French, Hungarian, Japanese, Korean, Portuguese, Chinese
- Released: 2023-03-14
- Data updated: 2026-06-20
- User reviews in markdown: https://appshunter.io/ios/app/kvantphone/id1641683309/reviews.md

## What is KvantPhone?

Secure calling and messaging

KvantPhone is a completely secure calling and group messaging application. KvantPhone protects you and gives you peace of mind that what you say, or message cannot be compromised by third parties. Using the KvantPhone application, you can enjoy the benefits of secure communication in complete peace.


***** IMPORTANT *****
KvantPhone application works in a secure, isolated infrastructure and needs account registration, which cannot be done from the application. If you do not yet have a KvantPhone account, please contact us at sales@kvantphone.com.
************************


NO BACKDOORS OF ANY KIND - GUARANTEED
The system and its implementation prevents potential hackers from eavesdropping, even if they have access to KvantPhone’s system plans or the App's source code. Not even KvantPhone’s developers can access your private data.

MAIN FEATURES:
- Secure peer-to-peer calling,
- Encrypted multi-peer conference calls (calls mixed on your handset, not on a central server),
- Secure instant messaging,
- Secure group chat,
- Secure file sending
- Superior voice quality,
- Worldwide coverage - as long as you can get online, KvantPhone can be used anywhere on the globe.

DESIGNED TO MEET THE STRICTEST SECURITY STANDARDS 
KvantPhone uses a peer-to-peer approach with an end-to-end encryption architecture, directly connecting the communicating parties. No central servers are involved. Calls are encrypted on each user's device. 

FLEXIBLE SERVICE & RAPID IMPLEMENTATION
Whatever the size of your company or complexity of its organization, KvantPhone’s full range of secure calling and messaging features are available to your staff within minutes. Because KvantPhone is cloud-based, it is quick to deploy and easy to configure. No special training is required for its use.

========================================

Terms of use: https://kvantphone.com/en/legal/tnc-individual/
Privacy policy: https://kvantphone.com/en/privacy-policy/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Basic | $2.99 | per month |
| Ultimate | $3.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 250 extra credit | $0.99 | one-time |



## Version history (last 5 releases)

### 2.5.1 — 2026-06-17

⊖ Improvements
- Optimized network handling
- Improved call handling
⊗ Bug Fixes
- General bug fixes
- Performance enhancements

### 2.4.2 — 2026-04-16

⊖ Improvements
- Improved VPN compatibility

### 2.4.1 — 2026-01-15

⊗ Improvements
- Improved push handling
- Improved sound design

### 2.4.0 — 2025-11-21

⊗ Improvements
- Redesigned application sounds
- Improved call handling and quality
- Improved network handling and quality
- Improved message handling
- Performance improvements and compatibility fixes
- Improvements in case of special network conditions

### 2.3.3 — 2025-09-08

⊗ Improvements
- General bug fixes
- Performance enhancements

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## More apps by Arenim Infosec Kft.

- [CryptTalk Pro](https://appshunter.io/ios/app/crypttalk-pro/id892554609)
- [CryptTalk](https://appshunter.io/ios/app/crypttalk/id909209291)
- [KvantMail](https://appshunter.io/ios/app/kvantmail/id1595599780)

All apps by Arenim Infosec Kft.: https://appshunter.io/developer/1595599782

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*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 2026-06-20.*