Comparison

Post Quantum Secure Chat vs LPS Talk

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Post Quantum Secure Chat

Features
Read full description

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 — 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 • True End-to-End Encryption — Messages are encrypted on your device and can only be read by the intended recipient. Not even we can access your conversations. • NIST-Approved Algorithms — Built with ML-KEM-768 for key exchange and ML-DSA-44 for digital signatures, the same standards adopted by governments worldwide. • Secure Image Sharing — Photos are encrypted before leaving your device, ensuring complete privacy for all shared media. • QR Code Contact Verification — Verify contacts in person by scanning QR codes, preventing man-in-the-middle attacks. • Real-Time Messaging — Instant message delivery with read receipts and typing indicators. • No Phone Number Required — Create an account without sharing personal information. • Cross-Platform — 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

About

LPS Talk

Features
Read full description

Lps Talk – Encrypted Messaging for Corporate Security
A military-grade secure, end-to-end encrypted messaging application. Lps Talk is a messaging application developed for the defense industry, public institutions, and organizations that require sensitive communication, featuring high security standards. The application aims to protect data integrity and user privacy at the highest level during messaging processes. Security is Our Priority
Lps Talk uses end-to-end encryption infrastructure to ensure that messages can only be read by the sender and the recipient. Message contents are not stored on our servers. Messages are temporarily stored in encrypted form only until they are delivered, after which they are automatically deleted from the system. We do not store communication history or contact information. Key Features • End-to-end encryption for message security • No persistent data storage on the server side • No storage of contact lists or message metadata • Completely ad-free and independent from external dependencies • Architecture compatible with internal corporate systems Who Is It For? • Employees of the defense and aerospace industry • Law enforcement and public safety personnel • Public and private sector units requiring strategic communication • All organizations seeking privacy in internal communication Why Lps Talk?
Lps Talk is a domestic messaging solution based on the principles of data sovereignty and security. Developed for use in critical tasks, its security architecture is designed in accordance with independent testing standards. With minimum data processing, advanced encryption, and a decentralized communication approach, it focuses on meeting the needs of corporate users. Lps Talk – Secure and Encrypted Messaging
Your privacy is our priority. An end-to-end encrypted and secure messaging experience. Lps Talk is a modern messaging application equipped with end-to-end encryption, prioritizing your privacy. It processes your personal data at a minimum level and keeps your chat history under your control only. Features • End-to-end encryption: Your messages are visible only to you and the recipient. • Respect for privacy: No chat contents or contact lists are stored on our servers. • Ad-free experience: Completely user-focused, distraction-free interface. • Lightweight and fast: High performance with low data usage and without unnecessary permissions. • On-device data storage: Your message history is stored only on your device, protected in encrypted form. • Anonymous usage: Communicate while protecting your identity with advanced security settings. Who Is It For?
It is suitable for individuals who care about their privacy, professionals who need sensitive communication, and anyone looking for a secure digital environment. Why Lps Talk?
Inspired by secure communication apps like Signal, Lps Talk is developed to meet needs for privacy, data sovereignty, and secure communication. User data is not processed; only limited technical information necessary to provide the required services is used.

Screenshots

Post Quantum Secure Chat4 screens
LPS Talk4 screens

Verdict

The call

The clearest difference is in-app purchases: LPS Talk at none against Post Quantum Secure Chat's 2. Post Quantum Secure Chat's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Post Quantum Secure Chat ships an update every 10 days, LPS Talk fortnightly. The most recent releases landed on September 6, 2026 and September 18, 2026 respectively.

Scorecard2 real differences · 4 level
Post Quantum Secure Chat versus LPS Talk: the parameters behind the verdict, then further details
ParameterPost Quantum Secure ChatLPS Talk
PriceFreeFree
Update frequencyEvery 10 days — betterFortnightly
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size35 MB58 MB
Age rating4+4+
DeveloperSAYMATIK BILISIM VE TEKNOLOJI ANONIM SIRKETILPS Bilişim A.Ş.

In-app purchases

2 purchases

Post Quantum Secure Chat

Subscriptions2
  • Monthly Subscription$4.991 Month
  • Annual Subscription$29.991 Year
None

LPS Talk

No in-app purchases

Questions

Is Post Quantum Secure Chat free?
Post Quantum Secure Chat is free to download, with in-app purchases available.
Is LPS Talk free?
LPS Talk is free to download, with no in-app purchases.
Do Post Quantum Secure Chat or LPS Talk have ads?
Neither Post Quantum Secure Chat nor LPS Talk shows ads.
Which is updated more often, Post Quantum Secure Chat or LPS Talk?
Post Quantum Secure Chat ships an update every 10 days, and LPS Talk fortnightly. Most recently, Post Quantum Secure Chat was updated on September 6, 2026 and LPS Talk on September 18, 2026.

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