# Crypviser Secure Messenger vs Uup Anonymous

The clearest difference is rating: Crypviser Secure Messenger at 4.5 against Uup Anonymous's 3.7. Crypviser Secure Messenger also leads on ratings volume (81 vs 3) and iOS requirement (13.0 vs 15.0). Uup Anonymous's advantage is review sentiment (100% vs 76%) and update cadence (fortnightly vs every 5 weeks). On price, ads, in-app purchases and monetization model 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 holds the better App Store score, 4.5 against 3.7. That said, the two scores are not equally well evidenced: Crypviser Secure Messenger has 81 ratings behind it against 3, so its average is the more settled of the two. Written reviews complicate that: 76% of Crypviser Secure Messenger's written reviews are positive against 100% of Uup Anonymous's, so the app with the better star average is not the one people write more warmly about.

Crypviser Secure Messenger ships an update every 5 weeks, Uup Anonymous fortnightly. The most recent releases landed on August 28, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Crypviser Secure Messenger | Uup Anonymous |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (81 ratings)](https://appshunter.io/ios/app/crypviser-secure-messenger/id1282141716/reviews)** | [3.7 (3 ratings)](https://appshunter.io/ios/app/uup-anonymous/id1633250443/reviews) |
| Number of ratings | **81** | 3 |
| Positive reviews | 75.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Fortnightly** |
| Monetization | Free | Free |
| Size | 170 MB | 136 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Crypviser GmbH](https://appshunter.io/developer/1282141715) | [Daniele Marinelli](https://appshunter.io/developer/1531737046) |

## 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)


### Uup Anonymous

[App page](https://appshunter.io/ios/app/uup-anonymous/id1633250443)

This app provides secure and anonymous communication through a decentralized network. It uses advanced encryption and a trustless system to protect user identity and data, enabling private text and large file transmissions.

**Highlights:** Anonymous communication, Decentralized server network, End-to-end encryption, Secure text and file transmission, Trustless system, Open-source data encryption

**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 Uup Anonymous free?

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

### Which has better reviews, Crypviser Secure Messenger or Uup Anonymous?

Crypviser Secure Messenger is rated higher. Crypviser Secure Messenger averages 4.5 out of 5 from 81 ratings, while Uup Anonymous averages 3.7 from 3 ratings.

### Do Crypviser Secure Messenger or Uup Anonymous have ads?

Neither Crypviser Secure Messenger nor Uup Anonymous shows ads.

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

Crypviser Secure Messenger ships an update every 5 weeks, and Uup Anonymous fortnightly. Most recently, Crypviser Secure Messenger was updated on August 28, 2026 and Uup Anonymous on September 14, 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.*