# KrypterApp — 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/krypterapp/id6757750471 (this page in markdown: same URL + `.md`)
- Developer: [Pavel Yeschenko](https://appshunter.io/developer/1745349056)
- Category: Utilities, Productivity
- Price: Free (on sale, was $0.99)
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 18.6 · 11 MB
- Languages: Belarusian, English, Russian, Ukrainian
- Released: 2026-01-16
- Data updated: 2026-07-09
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/krypterapp/id6757750471/reviews.md

## What is KrypterApp?

Your private conversations deserve better than "end-to-end encrypted (trust us)." Krypter 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 (Hybrid Public Key Encryption) and share it safely. Only the person you choose can open it. Not us. Not Apple. Not anyone else.

ENCRYPTED MESSAGES
Send private text messages that only your recipient can read. Copy, paste, send through any channel — iMessage, WhatsApp, email, Signal, whatever. The message stays locked no matter where it travels.

YOUR KEYS, YOUR RULES
Krypter generates encryption keys inside your iPhone's Secure Enclave — the same chip that protects Face ID and Apple Pay. Your keys physically cannot leave the device. Not even Krypter can see them.

SIMPLE FOR YOU, IMPOSSIBLE FOR THEM
Add friends as trusted contacts. Encrypt files and messages with one tap. No technical knowledge needed — Krypter handles the hard math while you handle your life.

PROVE WHO SENT IT
HPKE authenticated encryption lets the recipient verify it really came from you — not someone pretending to be you. No certificates needed. No authorities. Pure cryptography.

FUTURE-PROOF
Quantum computers are coming. Krypter includes XWing post-quantum hybrid encryption (ML-KEM-768 + X25519) so your secrets stay secret — today and decades from now.

ADD A PASSWORD
Stack a pre-shared key on top of HPKE encryption for double protection. Even if someone has your public key, they still can't read your files without the password.

FOUR ENCRYPTION CURVES
• P-256 Secure Enclave — hardware-locked, non-extractable
• P-521 — maximum-strength NIST curve
• X25519 + ChaCha20-Poly1305 — fast, modern, battle-tested
• XWing ML-KEM-768 — post-quantum hybrid, future-proof

TRULY PRIVATE
• No account required — ever
• Not joking about the above point: not only not required, but not even able to create any sort of account
• No network connections made by the app — fully offline by design
• No data leaves your device
• No analytics, no tracking, no telemetry
• PIN lock with duress PIN support
• Clipboard auto-clears after 30 seconds
• Privacy screen when you switch apps
• No ads, no paywalls

BACKUP YOUR KEYS
Export your software keys with military-grade password protection (PBKDF2, 120 million iterations). Restore anytime. Hardware keys stay sealed in your Secure Enclave — as it should be.

STANDARDS-BASED
Built on RFC 9180 HPKE, NIST P-256/P-521, X25519, AES-256-GCM, ChaCha20-Poly1305, and ML-KEM-768. No proprietary algorithms. No vendor lock-in. Your encrypted files use documented, open formats.

Krypter 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


## Frequently asked questions about KrypterApp

### 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)

### 2.3.27 — 2026-07-04

Further code cleanup, deduplication.

### 2.3.24 — 2026-06-27

UX bug for when one decrypted message is open and you open another deep link and see just an empty card instead.

### 2.3.21 — 2026-06-11

A bit more privacy enhancements. Cryptography wise this is the same level of protection.

### 2.3.17 — 2026-05-28

More under the hood cleanups.

### 2.3.14 — 2026-05-21

Finished the redesign, cleaned up old dead code.

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*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 2026-07-09.*