# Post Quantum Secure Chat vs Occulta

The clearest difference is in-app purchases: Occulta at none against Post Quantum Secure Chat's 2. Post Quantum Secure Chat's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 18.6). On price, update cadence and ads 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. Occulta asks for nothing beyond the download.

Post Quantum Secure Chat ships an update every 10 days, Occulta every 6 days. The most recent releases landed on September 20, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Post Quantum Secure Chat | Occulta |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 10 days | **Every 6 days** |
| Size | 35 MB | 11 MB |
| Requires iOS | **13.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SAYMATIK BILISIM VE TEKNOLOJI ANONIM SIRKETI](https://appshunter.io/developer/1652317997) | [Yura Filatov](https://appshunter.io/developer/439811957) |

## What reviewers say

### 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 |


### Occulta

[App page](https://appshunter.io/ios/app/occulta/id6758548781)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Post Quantum Secure Chat free?

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

### Is Occulta free?

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

### Do Post Quantum Secure Chat or Occulta have ads?

Neither Post Quantum Secure Chat nor Occulta shows ads.

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

Post Quantum Secure Chat ships an update every 10 days, and Occulta every 6 days. Most recently, Post Quantum Secure Chat was updated on September 20, 2026 and Occulta on October 1, 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.*