# KrypterPQ — Secure Enclave file encryption

> User-controlled file and message encryption using advanced cryptographic standards. (iPhone/iPad app by Pavel Yeschenko.)

- Source: https://appshunter.io/ios/app/krypterpq/id6757750471 (this page in markdown: same URL + `.md`)
- Developer: [Pavel Yeschenko](https://appshunter.io/developer/1745349056)
- Category: Utilities, Productivity
- Price: Free
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.0 · 11 MB
- Languages: American English, Belarusian, Russian, Ukrainian
- Released: 2026-01-16
- Data updated: 2026-10-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/krypterpq/id6757750471/reviews.md

## What is KrypterPQ?

Your private conversations deserve better than "end-to-end encrypted (trust us)." KrypterPQ puts real encryption in your hands: no middlemen, no servers, no fine print.

ENCRYPT ANYTHING
Photos, documents, voice memos, videos: encrypt any file with HPKE (RFC 9180) and send it any way you like. Only the person you choose can open it. Not us. Not Apple. Not anyone else.

ENCRYPTED MESSAGES
Write a message, encrypt it, and paste it into iMessage, WhatsApp, email, Signal, whatever. It stays unreadable wherever it travels, except to your recipient.

KEYS THAT NEVER LEAVE YOUR IPHONE
Every KrypterPQ key is created inside your iPhone's Secure Enclave, the same chip behind Face ID and Apple Pay. The private key can't be exported, copied or read, not even by KrypterPQ.

POST-QUANTUM KEY SHARING
Invite a contact with a link or QR code. Your public key travels back sealed with ML-KEM, the NIST post-quantum standard, so even a future quantum computer recording today's traffic learns nothing. Everyone sees keys only as SHA-256 fingerprints you can compare in person.

CIPHERTEXT THAT SAYS NOTHING
Every encrypted message and file starts with a header that looks like random bytes and is padded inside the encryption. Nobody can tell which algorithm was used, whether a password was added, or how big the original really is.

PROVE WHO SENT IT
Authenticated HPKE lets your recipient verify a message really came from you, not someone pretending to be you. No certificates. No authorities. Pure cryptography.

ADD A PASSWORD
Stack a shared password on top of the encryption, stretched with 5 million PBKDF2 rounds. Even with the right key, nobody reads it without the password.

NOTHING STORED IN THE CLEAR
Contacts, key names, dates, settings and the PIN are all sealed on your device with ML-KEM-1024 under the Secure Enclave, and behind your app PIN when it's on. A copy of the phone's storage reveals nothing.

TRULY PRIVATE
• No account required, ever. Not only not required: there is no way to create one
• No network connections: KrypterPQ works fully offline
• No data leaves your device unless you share it
• No analytics, no tracking, no telemetry
• App PIN with a panic PIN, tied to the Secure Enclave and Face ID
• Decrypted text hidden from screenshots and screen recordings
• Copied text expires from the clipboard after 30 seconds and never syncs to other devices
• Privacy screen when you switch apps
• No ads, no paywalls

BACK UP YOUR CONTACTS
Export your contacts in a password-encrypted backup (PBKDF2, 120 million iterations) and restore them anytime. Your keys stay in the Secure Enclave, as they should.

STANDARDS-BASED
Built on RFC 9180 HPKE, NIST P-256, AES-256-GCM, ML-KEM-768 and ML-KEM-1024, all from Apple's CryptoKit. No proprietary algorithms. No homemade crypto.

KrypterPQ is encryption the way it should be: yours.

## Key features

- Encrypt any file type (photos, documents, videos)
- Send encrypted text messages
- Keys stored in Secure Enclave
- Post-quantum encryption (XWing)
- Password protection for double security
- No account or network connection required
- Authenticated encryption for sender verification

## Is KrypterPQ safe?

Not enough ratings yet to assess KrypterPQ.

## Is KrypterPQ legit?

KrypterPQ has limited verification signals. The AppsHunter Legitimacy Score for KrypterPQ is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/krypterpq/id6757750471/reviews.md

### 5/5 — How 2 Download?

*2026-09-07*

Looks great, but the App Store won’t let me download it?!?

## Frequently asked questions about KrypterPQ

### What is KrypterApp?

KrypterApp is a utility that provides advanced, user-controlled encryption for files and messages. It uses your device's Secure Enclave and various cryptographic standards to ensure your data remains private and accessible only to intended recipients.

### How does KrypterApp protect my encryption keys?

KrypterApp generates and stores encryption keys within your iPhone's Secure Enclave, a dedicated hardware security chip. This means your keys are physically isolated and cannot be accessed by the app or any other software on your device.

### Can I send encrypted messages with KrypterApp?

Yes, KrypterApp allows you to send private text messages that are encrypted. You can copy and paste these messages into any communication channel, and they will remain locked until decrypted by your recipient.

### Does KrypterApp have ads?

No, KrypterApp is ad-free. The application explicitly states it has no ads, no paywalls, and no tracking, ensuring a private and uninterrupted user experience.

### What encryption standards does KrypterApp use?

KrypterApp utilizes several robust encryption standards, including HPKE (Hybrid Public Key Encryption), NIST P-256/P-521, X25519, AES-256-GCM, ChaCha20-Poly1305, and the post-quantum XWing ML-KEM-768.

### Is KrypterApp available on Android or desktop?

Based on the provided data, KrypterApp is currently supported on iPhone and iPad. There is no information indicating availability on Android or desktop platforms.

### How often is KrypterApp updated?

The latest version of KrypterApp is 2.3.17, last updated on May 28, 2026. This indicates a relatively frequent update schedule, suggesting ongoing development and maintenance.

### What is the age rating for KrypterApp?

KrypterApp has an age rating of 4+. This means it is considered suitable for users of all ages, with no content restrictions.

## Version history (last 5 releases)

### 3.0.1 — 2026-10-18

Krypter is now KrypterPQ: same app, same keys and contacts, new name. Nothing to do on your side.

### 3.0.0 — 2026-10-09

3.0 is our biggest privacy update yet.

◆ Post-quantum key sharing
Invite a contact with a link or QR code. Your key travels back sealed with ML-KEM, so nobody ever sees your raw public key, only its fingerprint.

◆ Ciphertext that says nothing
Every message and file now starts with a header that looks like random bytes, and is padded inside the encryption. Nothing gives away the algorithm, whether a password was used, or the real size.

◆ One key type: Secure Enclave
Every key is created inside the chip and can't be copied or exported, not even by Krypter.

◆ Nothing stored in the clear
Every contact, key name, date, setting and the PIN itself is sealed on your device under the Secure Enclave with ML-KEM-1024, and behind your app PIN when it's on. A copy of the phone's storage reveals nothing.

◆ Private by default
Decrypted text is hidden from screenshots and screen recordings. Quick Open now starts off.

◆ Stronger passwords and PIN
Password messages take far longer to brute-force, and the app PIN's Secure Enclave key now also asks for Face ID or your passcode.

◆ Fresh look
Contacts and keys appear as fingerprints, the new-key screen explains what you're getting, and the QR code is restyled with a dark-mode theme.

Heads-up: a fresh start
• 3.0 starts clean. Keys, contacts, PIN and settings from earlier versions are deleted on first launch. Back up your contacts in your current version before updating, and restore them after.
• Messages and files encrypted with earlier versions can't be opened in this one.
• Create a new key and send fresh invites. Ask your contacts to update too: earlier versions can't read what this version sends.

### 2.3.34 — 2026-10-07

- Show original file name when previewing it.
- Cancel big file decryption by clicking elsewhere.

### 2.3.33 — 2026-10-06

App icon restyled.
Also, Swift 6.4 in its full glory.

### 2.3.32 — 2026-09-29

UI consistency and security improvements.

## Apps similar to KrypterPQ

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Photo Forge PDF](https://appshunter.io/ios/app/photo-forge-pdf/id6746012269) | — | Free | Utilities |
| [Aegisix](https://appshunter.io/ios/app/aegisix/id6758121607) | — | $8.99 | Utilities |
| [Note Link by DCS0](https://appshunter.io/ios/app/note-link-by-dcs0/id6757952048) | — | Free | Utilities |
| [ProWatermark+](https://appshunter.io/ios/app/prowatermark-plus/id6758123841) | — | $8.99 | Utilities |
| [Charty for WhatsApp](https://appshunter.io/ios/app/charty-for-whatsapp/id1526677023) | 3.0 (2) | Free | Utilities |
| [Cheese ID](https://appshunter.io/ios/app/cheese-id/id6757756787) | — | Free | Utilities |

---

*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*