# Crypviser Secure Messenger vs Atom Messenger

The clearest difference is device support: Crypviser Secure Messenger at 3 against Atom Messenger's 1. Crypviser Secure Messenger also leads on iOS requirement (13.0 vs 16.0). 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.

Crypviser Secure Messenger ships an update every 5 weeks, Atom Messenger every 3 weeks. The most recent releases landed on October 19, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Crypviser Secure Messenger | Atom Messenger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (81 ratings)](https://appshunter.io/ios/app/crypviser-secure-messenger/id1282141716/reviews)** | — |
| Number of ratings | **81** | — |
| Positive reviews | 75.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 170 MB | 42 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Crypviser GmbH](https://appshunter.io/developer/1282141715) | [igloocy s.r.l.](https://appshunter.io/developer/1691843040) |

## What reviewers say

### Crypviser Secure Messenger

[App page](https://appshunter.io/ios/app/crypviser-secure-messenger/id1282141716)

This app offers a highly secure and anonymous messaging experience using blockchain technology. Enjoy private chats, video calls, and file sharing with military-grade encryption and decentralized key management. It prevents man-in-the-middle attacks and does not require personal information for registration.

**Highlights:** Blockchain-based encryption, Anonymous messaging, Private video and voice calls, Encrypted file sharing without size limits, Man-in-the-Middle attack detection, Multi-device support, Secure message synchronization

**In-app purchases:** none

**What reviewers like**

- 🔒 Blockchain-based encryption and security
- 🔒 Screenshot detection and intrusion alerts
- 🔒 Message forwarding and copying restrictions
- 👍 User-friendly and minimalist interface
- 🎥 High-quality video and voice calls

**What reviewers complain about**

- 💰 Requires paid subscription for full features
- 🐛 Frequent connectivity issues ('No Internet Connection' errors)
- 🐛 App crashes and freezes during login
- 🐛 Unstable performance and crashes
- 🐛 Messages not delivered reliably

**Reported bugs**

- No Internet Connection error despite working network
- Login screen freezes with password field obscured by popup
- Captcha validation rejects correct inputs
- Registration fails with 'insufficient characters' error despite meeting requirements
- App crashes on iOS 12 and older versions

**Requested features**

- Dark mode option
- Custom screensaver/wallpaper support
- Group chat functionality
- Better photo selection interface (not scrolling through all photos)
- Complete screenshot blocking (not just alerts)


### Atom Messenger

[App page](https://appshunter.io/ios/app/atom-messenger/id6450101210)

**In-app purchases:** none


## Frequently asked questions

### Is Crypviser Secure Messenger free?

Crypviser Secure Messenger is free to download, with no in-app purchases.

### Is Atom Messenger free?

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

### Do Crypviser Secure Messenger or Atom Messenger have ads?

Neither Crypviser Secure Messenger nor Atom Messenger shows ads.

### Which is updated more often, Crypviser Secure Messenger or Atom Messenger?

Crypviser Secure Messenger ships an update every 5 weeks, and Atom Messenger every 3 weeks. Most recently, Crypviser Secure Messenger was updated on October 19, 2026 and Atom Messenger on September 21, 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.*