# Khmer Crypto vs Post Quantum Secure Chat

The clearest difference is in-app purchases: Khmer Crypto at none against Post Quantum Secure Chat's 2. Khmer Crypto also leads on iOS requirement (13.0 vs 15.0). Post Quantum Secure Chat's advantage is update cadence (every 11 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. Post Quantum Secure Chat sells 2 in-app purchases, starting at $4.99 per month. Khmer Crypto asks for nothing beyond the download.

Khmer Crypto ships an update every 3 weeks, Post Quantum Secure Chat every 11 days. Both last shipped on November 8, 2026.

## The numbers

| Metric | Khmer Crypto | Post Quantum Secure Chat |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Size | 46 MB | 35 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Serey Platform LTD](https://appshunter.io/developer/1436165530) | [Zincirx](https://appshunter.io/developer/6816670621) |

## What reviewers say

### Khmer Crypto

[App page](https://appshunter.io/ios/app/khmer-crypto/id6502357518)

**In-app purchases:** none


### Post Quantum Secure Chat

[App page](https://appshunter.io/ios/app/post-quantum-secure-chat/id6743000247)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $4.99 | per month |
| Annual Subscription | $29.99 | per year |


## Frequently asked questions

### Is Khmer Crypto free?

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

### Is Post Quantum Secure Chat free?

Post Quantum Secure Chat is free to download, with in-app purchases available.

### Do Khmer Crypto or Post Quantum Secure Chat have ads?

Neither Khmer Crypto nor Post Quantum Secure Chat shows ads.

### Which is updated more often, Khmer Crypto or Post Quantum Secure Chat?

Khmer Crypto ships an update every 3 weeks, and Post Quantum Secure Chat every 11 days. Most recently, Khmer Crypto was updated on November 8, 2026 and Post Quantum Secure Chat on November 8, 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.*