# Qlavis vs Reason Space Messenger

The clearest difference is update cadence: Reason Space Messenger at daily against Qlavis's every 2 days. Reason Space Messenger also leads on iOS requirement (16.4 vs 26.0). 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.

Qlavis ships an update every 2 days, Reason Space Messenger daily. The most recent releases landed on October 2, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | Qlavis | Reason Space Messenger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/qlavis-post-quantum-messenger/id6757257934/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Monetization | Free | — |
| Size | 64 MB | 83 MB |
| Requires iOS | 26.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Qlavis, Inc.](https://appshunter.io/developer/1865642998) | [Sandboxer](https://appshunter.io/developer/6792736079) |

## What reviewers say

### Qlavis

[App page](https://appshunter.io/ios/app/qlavis-post-quantum-messenger/id6757257934)

A secure messaging app offering end-to-end encrypted private chats, voice, and video calls using post-quantum cryptography. It prioritizes user privacy with no phone number or email registration, and features secure rooms for group communication.

**Highlights:** Post-quantum cryptography for all communications, End-to-end encrypted messages, calls, and files, No phone number or email required for registration, Secure group rooms with access control, Optional in-chat cryptocurrency wallet, Screen recording and screenshot protection

**In-app purchases:** none


### Reason Space Messenger

[App page](https://appshunter.io/ios/app/reason-space-messenger/id6804057080)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Qlavis free?

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

### Is Reason Space Messenger free?

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

### Do Qlavis or Reason Space Messenger have ads?

Neither Qlavis nor Reason Space Messenger shows ads.

### Which is updated more often, Qlavis or Reason Space Messenger?

Qlavis ships an update every 2 days, and Reason Space Messenger daily. Most recently, Qlavis was updated on October 2, 2026 and Reason Space Messenger on October 19, 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.*