Post Quantum Secure Chat vs Hermes Private Messenger
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Post Quantum Secure Chat
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Secure messaging for the quantum era. PQC Chat is the first consumer messaging app built with NIST-standardized post-quantum cryptography. While traditional encryption may be vulnerable to future quantum computers, PQC Chat uses ML-KEM-768 and ML-DSA-44 algorithms to ensure your private conversations remain private โ today and tomorrow. Why Post-Quantum Security Matters Quantum computers pose a real threat to current encryption standards. Data encrypted today could be stored and decrypted later when quantum computers become powerful enough. PQC Chat protects you against this "harvest now, decrypt later" threat. Key Features โข True End-to-End Encryption โ Messages are encrypted on your device and can only be read by the intended recipient. Not even we can access your conversations. โข NIST-Approved Algorithms โ Built with ML-KEM-768 for key exchange and ML-DSA-44 for digital signatures, the same standards adopted by governments worldwide. โข Secure Image Sharing โ Photos are encrypted before leaving your device, ensuring complete privacy for all shared media. โข QR Code Contact Verification โ Verify contacts in person by scanning QR codes, preventing man-in-the-middle attacks. โข Real-Time Messaging โ Instant message delivery with read receipts and typing indicators. โข No Phone Number Required โ Create an account without sharing personal information. โข Cross-Platform โ Message friends on any device seamlessly. Privacy by Design - No message content stored on servers - No tracking or analytics - No ads, ever - Open cryptographic standards About Post-Quantum Cryptography PQC Chat implements the Federal Information Processing Standards (FIPS) 203 and 204, published by the National Institute of Standards and Technology (NIST) in August 2024. These represent the gold standard in quantum-resistant cryptography. Protect your conversations for the future. Download PQC Chat today. Terms of Use (EULA): https://pqcnow.com/terms-of-service
Hermes Private Messenger
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Hermes keeps private chats, groups, linked devices, push notifications, session recovery, and local privacy controls in one focused messenger.
Screenshots
Verdict
The clearest difference is in-app purchases: Hermes Private Messenger at none against Post Quantum Secure Chat's 2. Post Quantum Secure Chat's advantage is update cadence (every 10 days vs monthly) and iOS requirement (13.0 vs 17.6). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Post Quantum Secure Chat sells 2 in-app purchases, starting at $4.99 per month. Hermes Private Messenger asks for nothing beyond the download.
Post Quantum Secure Chat ships an update every 10 days, Hermes Private Messenger monthly. The most recent releases landed on October 21, 2026 and October 12, 2026 respectively.
| Parameter | Post Quantum Secure Chat | Hermes Private Messenger |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 10 days โ better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 13.0 โ better | 17.6 |
| Further details โ not scored | ||
| Size | 35 MB | 813 MB |
| Age rating | 4+ | 17+ |
| Developer | SAYMATIK BILISIM VE TEKNOLOJI ANONIM SIRKETI | Enrique Ivars |
In-app purchases
Post Quantum Secure Chat
- Monthly Subscription$4.991 Month
- Annual Subscription$29.991 Year
Hermes Private Messenger
No in-app purchases
Questions
Is Post Quantum Secure Chat free?
Is Hermes Private Messenger free?
Do Post Quantum Secure Chat or Hermes Private Messenger have ads?
Which is updated more often, Post Quantum Secure Chat or Hermes Private Messenger?
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