198+ iOS apps curated and reviewed
Looking for free zero knowledge encryption app? 18 of our 198+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 4.6★ (105K) | Yes | Yes | Aug 2026 |
| 2 |  | Free | 4.8★ (59K) | No | No | Aug 2026 |
| 3 |  | Free | 4.3★ (4.7K) | Yes | Yes | Aug 2026 |
| 4 |  | Free | 4.8★ (47K) | No | Yes | Aug 2026 |
| 5 |  | Free | 4.7★ (3.5K) | No | Yes | Aug 2026 |
| 6 |  | Free | 4.6★ (48K) | No | Yes | Aug 2026 |
| 7 |  | Free | 3.0★ (2) | No | Yes | Aug 2026 |
| 8 |  | Free | 4.5★ (5.2K) | Yes | Yes | Aug 2026 |
Securely store, sync, and share your files with end-to-end encryption. Communicate privately with encrypted chat and video calls. Access your data from any device, anywhere.
This app offers secure messaging and file sharing with state-of-the-art end-to-end encryption. It provides options for private or on-premise server deployment, advanced group management, and a user-friendly interface. Enjoy seamless cross-platform communication with full control over your data.
Secure your online accounts with standards-based two-factor authentication. This app generates time-based one-time passwords directly on your device, offering a reliable second step for sign-ins without relying on SMS codes. Protect personal and work accounts across various platforms.
This encrypted email service from Switzerland prioritizes user privacy with end-to-end encryption. It offers robust security features to protect your communications from phishing, spam, and tracking, allowing you to manage your inbox with ease.
Secure your communications with an encrypted email service offering end-to-end encryption for emails and contacts. Enjoy features like anonymous registration, an ad-free experience, and a free encrypted calendar. Protect your privacy with a service developed and hosted in Germany.
This app provides secure two-factor authentication codes for your online accounts, enhancing security with encryption and backups. It offers seamless synchronization across Apple devices and quick access via widgets, even when offline.
Secure your sensitive apps, photos, and videos with a passcode. Customize app icons for added privacy and use a private notepad for account passwords. Protect your personal information from unauthorized access.
Secure your sensitive applications and personal data with this privacy tool. Easily lock any app to prevent unauthorized access and keep your information out of sight from prying eyes. Enjoy enhanced device security and peace of mind.
Secure your sensitive information with robust 256-bit AES encryption. This app prioritizes privacy with zero-knowledge, offline-only storage and no cloud integration or analytics. It offers a simple, secure way to keep your notes protected from unauthorized access.
Securely store and manage your passwords, credit card numbers, and other sensitive information. Enjoy fast setup, advanced encryption, and seamless syncing across all your devices. Try it risk-free with a 30-day free trial of premium features.
Securely store and manage your photos, videos, documents, and passwords with military-grade encryption. Enjoy real-time decryption for media playback and editing, a private browser, and advanced security features like a fake PIN and panic gesture.
This app provides an extra layer of security for your online accounts by generating time-based one-time passwords (TOTP/OTP) for two-factor authentication. It supports numerous services and offers features like encrypted sync, passkey support, and app-level security.
Securely encrypt and decrypt sensitive text data, including notes, messages, and cryptocurrency keys. Offers robust security with multiple strong encryption algorithms and advanced steganography features to hide data within images. Also supports secure password exchange using post-quantum cryptography.
Encrypt your sensitive data stored in cloud services with this open-source tool. It allows you to create secure vaults with passwords, accessible only by you, and integrates seamlessly with your device's file system. Protect your privacy and ensure your data remains confidential.
Securely store photos, videos, documents, passwords, and more in a private vault. Features include document scanning, biometric security, a private browser, and break-in attempt alerts.
This secure messenger prioritizes privacy with end-to-end encryption for all communications. It uses a unique ID instead of personal information, leaving no data trail and offering anonymous use. Enjoy private chats, calls, and file sharing without ads or trackers.
This app helps you organize and secure important family information for emergencies. It allows you to create digital 'binders' for assets and share them with trusted contacts, ensuring your loved ones have access when they need it most.
Browse the internet securely and anonymously with advanced encryption and an incognito mode. Enjoy fast connections and leave no trace of your online activity. Premium features offer an ad-free experience and enhanced performance.
Manage your screen time and enhance focus with intelligent app blocking and privacy protection. Create a private digital space, track usage, and set schedules to reduce distractions and build healthier digital habits.