KrypterPQ vs Lock it
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KrypterPQ
Encrypt any file or message using strong, standards-based cryptography. Keys are generated and stored securely within your device's Secure Enclave, ensuring only you and your intended recipient can access your data. Works offline with no accounts or tracking.
- Encrypt any file type (photos, documents, videos)
- Encrypt messages for sharing via any platform
- Keys stored in iPhone's Secure Enclave
- Post-quantum key sharing with ML-KEM
- Authenticated encryption for sender verification
- Optional password protection
- Offline functionality, no account needed
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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.
Lock it
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Lock it – Hide Photos, Files and Folders Securely Lock it is a complete privacy vault designed to protect your personal photos, videos, files and sensitive data. It helps you hide content, lock folders and keep your information secure using modern security methods. Whether you want to hide private photos, lock important documents or secure folders with Face ID or password, Lock it gives you full control over your privacy. Folder and Subfolder Management Create unlimited folders and subfolders to organize your files your way. Use custom folder icons to quickly identify your content. Keep everything structured and easy to access inside the app. Security and Privacy Protection Lock folders using Face ID or Touch ID. Protect folders with custom passwords. Lock the entire app for an extra layer of security. All data is stored securely and protected on your device. Hide Photos, Videos and Files Hide photos and videos from your gallery. Store documents, audio, notes and ZIP files securely. Preview files safely inside the app without exposing them outside. Secure Export and Sharing Export folders as ZIP files when needed. Share files securely while keeping your privacy protected. Maintain control over your data even after export. Built for Privacy No data tracking. No unauthorized access. Your private data stays on your device and under your control. Lock it is ideal for anyone who values privacy, security and organized storage for personal data.
Screenshots
Verdict
The clearest difference is iOS requirement: Lock it at 16.6 against KrypterPQ's 26.0. On price, ads, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | KrypterPQ | Lock it |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 4 days | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 26.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 11 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Pavel Yeschenko | BRINDER SINGH |
In-app purchases
KrypterPQ
No in-app purchases
Lock it
No in-app purchases









