Sudo Encrypt vs Invisure
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sudo Encrypt
Securely encrypt and decrypt messages using RSA encryption. Generate your own keypairs, import others' public keys, and sign/verify message signatures. Seamlessly integrate with iMessage for easy sharing of encrypted content.
- Generate RSA keypairs locally
- Encrypt messages with public keys
- Decrypt messages with private keys
- Sign and verify message signatures
- iMessage extension for seamless integration
- Embed encrypted messages as iMessage objects
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- Generate RSA keypairs locally - Import others' public keys and encrypt messages to send to others - Decrypt messages others sent to you with your private key - Sign / Verify message signature Best of all, encryption and decryption of messages can be done directly in the iMessage app. When using the in-app extension, you no longer have to send a long piece of string, the encrypted message is embedded into an iMessage object so the other side can just click and decrypt.
Invisure
Encrypt sensitive messages with military-grade security using a simple interface. Protect personal details, financial information, and private conversations with AES-256-GCM encryption and password protection. Your privacy is paramount with zero data storage and no account required.
- AES-256-GCM encryption
- Password-based security
- Zero data storage
- No account required
- Auto-clear sensitive data
- Dark mode support
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Invisure: Secure Message Encryption Invisure puts military-grade encryption in your hands with a simple, elegant interface designed for maximum privacy and security. When you need to share sensitive information, Invisure ensures your data remains protected. Powerful Security, Simple to Use Encrypt any message with AES-256-GCM encryption - the same standard trusted by governments and financial institutions worldwide. Just type your message, set a password, and encrypt with a single tap. Share the encrypted text through any communication channel while keeping your information completely secure. Your Privacy Comes First Invisure is built with privacy at its core: • Zero data storage - nothing is ever saved to our servers • No account required - use the app instantly with no sign-up • No tracking or analytics - your usage remains completely private • Auto-clear feature removes sensitive data after viewing Perfect for Sharing Sensitive Information Invisure makes it safe to share: • Personal details and identification numbers • Financial information and account credentials • Business plans and confidential notes • Private messages and sensitive conversations • Access codes and passwords How It Works 1. Enter the text you want to encrypt 2. Create a password to secure your message 3. Tap "Encrypt" to convert your message to secure encrypted text 4. Share the encrypted text through any app or platform 5. Provide the password separately to your recipient 6. They use Invisure to decrypt your message securely Key Features • Military-grade AES-256-GCM encryption • Password-based key derivation with 10,000 rounds • Customizable auto-clear timeout (1-5 minutes) • Clean interface with dark mode support • Copy and share options for encrypted text • One-tap clipboard access for convenience • Complete privacy with zero data collection Technical Security Details Invisure uses sophisticated cryptographic techniques to ensure maximum security: • AES-256-GCM provides both confidentiality and authentication • PBKDF2 with HMAC-SHA256 for secure key derivation • Unique random salt for each encryption operation • Authentication tags to verify message integrity • All cryptographic operations performed locally on your device Designed for Privacy We believe privacy is a fundamental right. Invisure is designed to leave no trace of your sensitive communications: • All operations happen entirely on your device • Messages are only held temporarily in device memory • Data is automatically cleared when switching screens • No logs or backups of your messages are ever created Invisure is the perfect solution when you need to share sensitive information but don't want to compromise on security or privacy. Simple, powerful encryption for everyone. Privacy Policy link: https://lithium.is/privacy-policy/ Terms of Use (EULA) link: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: Sudo Encrypt at none against Invisure's 1. Sudo Encrypt also leads on device support (3 vs 1) and ratings volume (6 vs 2). Invisure's advantage is rating (5.0 vs 4.7). On price, update cadence and ads 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. Invisure sells 1 in-app purchase, starting at $0.99 per month. Sudo Encrypt asks for nothing beyond the download.
Invisure holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 6 and 2 respectively.
Sudo Encrypt ships an update every 9 days, Invisure every 2 weeks. The most recent releases landed on October 4, 2026 and September 29, 2026 respectively.
| Parameter | Sudo Encrypt | Invisure |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (6 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | 2 |
| Update frequency | Every 9 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 18.4 |
| Further details — not scored | ||
| Size | 2 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Shunzhe Ma | Lithium ehf |
Customer experience
Sudo Encrypt
Invisure
In-app purchases
Sudo Encrypt
No in-app purchases
Invisure
- Unlimited Decryptions$0.991 Month








