Comparison

Frost.m vs Post Quantum Secure Chat

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

Head to head
About

Frost.m

Send and receive disappearing text messages within iMessage. Messages expire automatically after being opened, ensuring privacy and preventing sensitive information from appearing in notifications. It also offers a fun way to play word memory games.

Highlights
  • Self-destructing text messages
  • Messages expire after opening
  • No sensitive info in notifications
  • Timed envelope for texts
  • Word memory games
  • iMessage integration
Read full description

Frost.m lets you send and receive self-destructing text messages on iMessage. Text messages expire 1, 10, or 60 seconds after they are opened, so read them quick! Only the sender knows which Frost mode you will receive. Have you ever received a text message notification containing private or personal information while sharing a device screen with others? You can now use Frost.m to avoid that scenario! Texts within Frost.m are never displayed on notification alerts. Frost.m is like a timed envelope for your text messages. You can also use Frost.m to play memory games. Send them a list of words and see which ones they remember! **Don't forget to click on the 'Up' arrow in iMessage to actually send the Frost.m message. Feedback/support contact: support@bluevinesolutions.com

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

Screenshots

Frost.m4 screens
Post Quantum Secure Chat4 screens

Verdict

The call

The clearest difference is in-app purchases: Frost.m at none against Post Quantum Secure Chat's 2. Frost.m also leads on iOS requirement (10.0 vs 13.0). On price, 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. Frost.m asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Frost.m versus Post Quantum Secure Chat: the parameters behind the verdict, then further details
ParameterFrost.mPost Quantum Secure Chat
PriceFreeFree
Rating2.8 (8 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings8 — better—
Update frequency—Every 10 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better13.0
Further details — not scored
Size19 MB35 MB
Age rating4+4+
DeveloperBlue Vine Solutions, LLCSAYMATIK BILISIM VE TEKNOLOJI ANONIM SIRKETI

In-app purchases

None

Frost.m

No in-app purchases

2 purchases

Post Quantum Secure Chat

Subscriptions2
  • Monthly Subscription$4.991 Month
  • Annual Subscription$29.991 Year

Questions

Is Frost.m free?
Frost.m 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 Frost.m or Post Quantum Secure Chat have ads?
Neither Frost.m nor Post Quantum Secure Chat shows ads.

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