# Qwantum Private Messaging vs ROT13 Decoder

The clearest difference is update cadence: Qwantum Private Messaging at every 2 months against ROT13 Decoder's every 8 months. Qwantum Private Messaging also leads on iOS requirement (13.0 vs 15.0). 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.

Qwantum Private Messaging ships an update every 2 months, ROT13 Decoder every 8 months. The most recent releases landed on October 30, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Qwantum Private Messaging | ROT13 Decoder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/qwantum-private-messaging/id6464568252/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | — |
| Size | 4 MB | 16 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [MagTek, Inc.](https://appshunter.io/developer/371172200) | [佳伟 蔡](https://appshunter.io/developer/1801859662) |

## What reviewers say

### Qwantum Private Messaging

[App page](https://appshunter.io/ios/app/qwantum-private-messaging/id6464568252)

This secure messaging app allows users to encrypt and decrypt sensitive data using physical card readers and tokens for authentication. It fosters a community of professionals valuing privacy and document integrity.

**Highlights:** End-to-end data encryption, Card reader authentication, Token-based login, Secure message creation, Message expiration dates, Audit detail levels

**In-app purchases:** none


### ROT13 Decoder

[App page](https://appshunter.io/ios/app/rot13-decoder/id6743629613)

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

**In-app purchases:** none


## Frequently asked questions

### Is Qwantum Private Messaging free?

Qwantum Private Messaging is free to download, with no in-app purchases.

### Is ROT13 Decoder free?

ROT13 Decoder is free to download, with no in-app purchases.

### Do Qwantum Private Messaging or ROT13 Decoder have ads?

Neither Qwantum Private Messaging nor ROT13 Decoder shows ads.

### Which is updated more often, Qwantum Private Messaging or ROT13 Decoder?

Qwantum Private Messaging ships an update every 2 months, and ROT13 Decoder every 8 months. Most recently, Qwantum Private Messaging was updated on October 30, 2026 and ROT13 Decoder on October 13, 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.*