StealthOp vs Novatools
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StealthOp
This app allows you to hide encrypted text messages and images within seemingly normal text. It uses advanced zero-width character technology and military-grade encryption to ensure your communications are invisible and secure.
- Hide encrypted text messages
- Embed encrypted images in text
- Zero-width character steganography
- RSA 2048-bit encryption
- Dual contact system with QR key exchange
- Automatic detection of hidden content
- End-to-end encryption
Read full descriptionHide full description
StealthOps - Invisible Secure Messaging StealthOps is an advanced steganography app that allows you to hide encrypted messages and images inside normal-looking text using cutting-edge zero-width character technology. Your secret communications remain completely invisible to anyone without the proper decryption keys. What It Does StealthOps transforms ordinary text like "Hey, how's your day going? Hope you're doing well!" into the exact same looking text that secretly contains hidden encrypted content. The text appears identical, but contains a hidden encrypted message or image that only the intended recipient can reveal. How It Works Zero-Width Steganography: Uses invisible Unicode characters (zero-width spaces, joiners, etc.) to embed data. The hidden content is completely invisible to the human eye and text appears normal in any messaging app, email, or social media. Can be copied, pasted, and shared like regular text. Military-Grade Encryption: RSA 2048-bit encryption protects all hidden content. Public/Private key pairs ensure only intended recipients can decrypt. Each contact has unique encryption keys for maximum security. Messages are encrypted before being hidden in the text. Dual Contact System: Sender Contacts are people who can send you encrypted messages. Receiver Contacts are people you can send encrypted messages to. Easy QR code sharing for exchanging public keys with automatic key management and validation. Key Features Hidden Text Messages: Encrypt secret text inside innocent-looking messages. Perfect for sensitive communications that need to appear normal. Supports any length of hidden content. Hidden Image Encryption: Hide entire images inside plain text messages. Images are compressed, encrypted, and embedded invisibly. Share photos securely without anyone knowing. Contact Management: Add contacts by scanning QR codes or importing public keys. Visual indicators show contact types with secure key exchange process. Smart Detection: Automatically detects if received text contains hidden content. Identifies whether hidden content is text or images with one-tap decryption and viewing. Modern Interface: Clean, intuitive design with dark mode support. Segmented tabs for sent/received content. Real-time encryption status indicators and haptic feedback. Security Features End-to-End Encryption ensures messages are encrypted on your device before hiding. Zero Knowledge means the app never stores or transmits your private keys. Plausible Deniability makes hidden messages completely undetectable. Forward Secrecy uses unique key pairs for each contact. Tamper Detection safely rejects invalid or corrupted hidden content. How to Use Setup: Add contacts by scanning QR codes or importing public keys. Share your key by generating and sharing your public key via QR code. Verify keys to confirm key exchange with your contacts. Sending: Select a receiver contact, enter your secret message or select an image, add innocent-looking cover text, then encrypt and share the normal-looking text anywhere. Receiving: Paste suspicious text into the decode screen, select the sender contact for decryption, tap decode to reveal hidden content, then view the secret message or image. Privacy & Security No Cloud Storage keeps all data on your device. No Analytics means zero telemetry or user tracking. Offline Capable works without internet connectivity. Secure Deletion properly cleans up sensitive data. StealthOps represents the cutting edge of digital steganography, combining advanced Unicode manipulation techniques, robust cryptographic implementations, user-friendly interface design, and cross-platform text compatibility. The app makes military-grade steganography accessible to everyone while maintaining the highest security standards. StealthOps: Where your secrets become invisible.
Novatools
Read full descriptionHide full description
Your Complete Security & Developer Toolkit Novatools is the essential companion for developers, security professionals, and IT administrators working with cryptography, certificates, and network protocols. Built natively for Apple platforms with a clean, intuitive interface. CRYPTOGRAPHY TOOLS • Generate KeyPairs with modern algorithms • Post-Quantum Cryptography: SLH-DSA, ML-DSA, ML-KEM • OpenSSH KeyPair generation • Symmetric & Asymmetric encryption utilities • Industry-standard crypto operations CERTIFICATE MANAGEMENT • Create Certificate Signing Requests (CSR) • Decode and inspect CSRs • Examine X.509 certificates in detail • PEM/DER format conversion • Sign CSRs to generate certificates • Self-signed certificate creation WEB & NETWORK TOOLS • JWT Viewer & Creator for token inspection • HTTP Server diagnostics and testing • DNS lookup and troubleshooting • URL certificate verification • Full-featured HTTP Client • MQTT Client for IoT development • Netcat-style network utility • Port Scanner for network analysis • Simple Web Server for local testing • SMTP Server for email testing GENERATORS & ENCODERS • UUID & ULID/NanoID generation • Bcrypt password hashing • Base64 & Base64-URL encoding/decoding • QR Code generation • Hash generation (MD5, SHA family) • File hash calculator • Random bytes & nonce generation FEATURES YOU'LL LOVE Native performance on iOS and macOS Favorites system for quick access to frequently-used tools Clean, professional interface No internet connection required for most tools Privacy-focused: all processing happens on-device Regular updates with new tools Whether you're debugging authentication flows, testing certificate chains, generating secure keys, or exploring network services, Novatools provides professional-grade utilities in a single, cohesive app. Perfect for: • Software developers • DevOps engineers • Security researchers • System administrators • Network engineers • Anyone working with web services and cryptography Download Novatools today and streamline your development workflow!
Screenshots
Verdict
The clearest difference is iOS requirement: StealthOp at 17.0 against Novatools'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 | StealthOp | Novatools |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Every 3 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 1 MB | 26 MB |
| Age rating | 4+ | 17+ |
| Developer | Grey LLC | Stian Ravndal |
In-app purchases
StealthOp
No in-app purchases
Novatools
No in-app purchases









