IMMUNE Messenger vs OK.secure
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
IMMUNE Messenger
This secure messaging app offers end-to-end encrypted chats and calls, with a built-in crypto wallet for easy Bitcoin transfers directly within conversations. It prioritizes user privacy by not storing data on servers, ensuring all communications remain on your device.
- End-to-end encrypted messaging
- P2P voice and video calls
- Built-in Bitcoin wallet
- Direct Bitcoin transfers
- Ad-free experience
- File and media sharing
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IMMUNE is an innovative, new messenger with a built-in crypto wallet, a high degree of security and protection for your data. The built-in crypto wallet allows you to easily and quickly transfer to your friends and business partners - sending and receiving bitcoins directly from the chat. IMMUNE does not store personal correspondence and contacts on its servers, all data remain on your device. All correspondence is protected with end-to-end encryption using strong, proven algorithms (ECIES, AES256). IMMUNE contains all the usual messenger functions: Sending text and voice messages Voice and video calls Sending and receiving files of any type Sending and receiving images and videos Sending and receiving contacts from the address book The IMMUNE crypto wallet allows you to: Store bitcoins on the mobile device Transfer bitcoins to other people by phone number or a wallet address Restore the wallet using a secret phrase when reinstalling the app or changing the phone number IMMUNE uses the technology that allows you to connect to your companion directly bypassing intermediate servers, which gives high quality calls without interference and distortion. IMMUNE is an ad-free application. Just you and your partners in conversation, no annoying banners or pop-up windows.
OK.secure
This app offers private, end-to-end encrypted messaging and a secure crypto wallet. Communicate freely with voice, video calls, and file sharing, all protected by blockchain technology and a zero-knowledge principle. Manage your digital assets with integrated DeFi features.
- End-to-end encrypted messaging
- Voice and video calls
- File and screen sharing
- Non-custodial crypto wallet
- DeFi and crypto trading
- Blockchain technology
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Private Encrypted Messenger & Crypto Wallet platform. The OK.secure app with end-to-end encryption based on blockchain technology for your private and secure communication. OK.secure only requires your internet connection. NO telephone charges for calls, chat with your friends or make a video call with family, friends or colleagues at no additional cost from anywhere in the world. > Encrypted Messenger with File-Sharing - Chat feature with group chat - Receive messages only AFTER accepted invitation; communicate securely and exclusively with your contacts, no threat to privacy - Voice and video calls: Call your friends, family, colleagues and partners anywhere in the world - Screen sharing, privately share your screen with your contacts during the call (web application) - Share files securely and privately, including photos, videos, and voice messages (web application) - Military-grade end-to-end encryption for all features (256-bit AES encryption; RSA 2048-bit key cryptography; Elliptic Curve Cryptography; PBKDF2 key derivation with SHA-256 hashing) OK.secure is simple, FREE and easy to use. OK.secure protects your privacy by encrypting all of your messages and data at NO EXTRA CHARGE. We offer the highest level of security and privacy. Our OK.secure platform operates on a ZERO-KNOWLEDGE principle, providing complete data security. No one but you has access to YOUR personal information. OK.secure privacy features include: * End-to-end encrypted communications and data * Blockchain technology for decentralized digital identities * Decentralized cloud storage * Zero knowledge concept - we can never see your messages or data * Push notifications notify you when new messages arrive * Integrated into the OK.secure web application - use the full range of features from your PC / Mac * Protected privacy - your encrypted data is never be shared with third parties > Crypto Wallet In addition to being a secure messenger, our latest update includes the all-new Crypto Wallet, a one-stop shop for all your crypto needs. Keep all your valuable and private crypto assets in one secure place with end-to-end encryption built into the blockchain. * Store: Keep all your crypto in the most secure place in your own non-custodial crypto wallet (BTC wallet, Ethereum wallet) built into the OK.secure app * DeFi: Buy and trade digital assets from your crypto wallet Wallet features: * Non-custodial multi-cryptocurrency wallet with Bitcoin, Ethereum & Binance Smart Chain support * Crypto/Fiat exchange * Send/request/pay crypto directly in chat * QR scan for easy crypto payments * Biometric authentication * Buy gift cards and vouchers with crypto Visit our knowledge-base: https://www.ok.de/faq Follow us: https://business.facebook.com/OK.de.email What happens in OK.secure stays in OK.secure!
Screenshots
Verdict
The clearest difference is monetization model: IMMUNE Messenger at free against OK.secure's free with in-app purchases. On price, update cadence, ads and in-app purchases 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.
Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.
| Parameter | IMMUNE Messenger | OK.secure |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | — | 58.3% of reviews |
| Number of ratings | 1 — better | — |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.5 — better | 16.6 |
| Further details — not scored | ||
| Size | 88 MB | 113 MB |
| Age rating | 17+ | 12+ |
| Developer | IMM Money Messenger Limited | OK.de Services GmbH |
Customer experience
IMMUNE Messenger
OK.secure
In-app purchases
IMMUNE Messenger
No in-app purchases
OK.secure
No in-app purchases
Questions
Is IMMUNE Messenger free?
Is OK.secure free?
Do IMMUNE Messenger or OK.secure have ads?
Which is updated more often, IMMUNE Messenger or OK.secure?
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