Kosmos Hi Lo vs Krypta ECC
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Kosmos Hi Lo
This app offers two distinct communication platforms for private messaging and calling. One is for sensitive conversations with friends, featuring a 'kill code' to delete messages. The other is for everyday interactions.
- Dual communication platforms
- Private messaging
- Voice and video calling
- Secure 'Hi' level communication
- Daily 'Lo' level interaction
- Message deletion 'kill code'
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Kosmos is a zero-knowledge messenger built so that your conversations belong to you โ and only you. Every message, call, and file is end-to-end encrypted. The encryption keys live on your devices, never on our servers, which means we can't read your messages even if we wanted to. No backdoors. No exceptions. Why Kosmos โข End-to-end encrypted by default โ Chats, calls, and shared files are encrypted before they ever leave your device. We can't read them, and neither can anyone else. โข Private communities โ Build groups and spaces for your team, friends, or community, all encrypted by default. โข Everything in one private inbox โ Messages, calls, and files together in a single secure place. โข No metadata mining โ We don't build a profile on you. Add contacts by QR code with zero data collection. โข You hold the keys โ Your identity and your conversations are yours. Recover your account with your own recovery phrase, not our servers. Kosmos is for anyone who believes private communication should be the default, not a premium add-on. Download it and take your conversations back.
Krypta ECC
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Krypta ECC is a privacy-focused communication app that looks and functions like a regular calculator, but behind a secret code lies a secure, end-to-end encrypted chat system. It's designed for users who want private conversations without drawing attention. A Calculator with a Secret At first glance, Krypta ECC appears to be a simple, fully functional calculator. You can perform normal operations like addition, subtraction, multiplication, division, and percentage calculations. It works exactly as any standard calculator would. However, when you enter your personal secret code and confirm it, the app unlocks a hidden chat interface. Only you know how to access it, making your private messages truly discreet. Private and Secure Messaging Behind the calculator is a fully featured chat system, designed for direct and private communication between users. Each user creates a unique username and a personal app code. The code is stored locally and never shared with any server, ensuring that your access to the chat is entirely secure and private. You can start conversations in two ways: โข By username: search and connect directly with another Krypta ECC user. โข By invite link: share or open a secure link that instantly starts a chat connection. The messaging interface is simple and familiar, featuring real-time text communication, timestamps, delivery and read indicators, and privacy settings. You can also block unwanted contacts or report misuse directly in the app. End-to-End Encryption Every message you send or receive is protected with end-to-end encryption (RSA-2048 + AES-256-GCM), meaning only you and your chat partner can read the conversation. Even Krypta ECC's servers cannot decrypt or view your messages. All encryption keys are generated and stored locally on your device, never uploaded or shared. Messages are automatically deleted after delivery, ensuring your conversations remain private and temporary. Powered by Firebase Technology Krypta ECC uses Google Firebase to provide reliability, speed, and scalability: โข Firestore: Real-time chat and message storage โข Firebase Authentication: Secure and simple user management โข Cloud Functions: Serverless automation for invites and moderation Discreet and Intuitive Design The app is designed for maximum discretion. No one will ever suspect there's a hidden chat behind your calculator. You can quickly return to the calculator screen at any time with a simple gesture or tap, making it safe to use in public or shared environments. The interface is clean, minimalist, and familiar. Whether you are calculating something or chatting securely, the experience is smooth, fast, and distraction-free. Privacy by Design Krypta ECC is built around privacy principles. Your personal information, conversations, and contacts are not tracked, analyzed, or sold. Only the essential data required for functionality is stored. The app follows GDPR-compliant data handling and allows you to delete your account and all related data at any time. No advertising, no tracking, no profiling โ just secure, private communication. Content Moderation Krypta ECC includes comprehensive content moderation: โข Automatic filtering of objectionable content โข Report functionality for inappropriate behavior โข Block functionality to remove unwanted contacts โข Developer contact information available in Settings โข All reports reviewed within 24 hours
Screenshots
Verdict
The clearest difference is in-app purchases: Krypta ECC at none against Kosmos Hi Lo's 3. Krypta ECC also leads on update cadence (monthly vs every 2 months). Kosmos Hi Lo's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Kosmos Hi Lo sells 3 one-off in-app purchases. Krypta ECC asks for nothing beyond the download.
Kosmos Hi Lo ships an update every 2 months, Krypta ECC monthly. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.
| Parameter | Kosmos Hi Lo | Krypta ECC |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | โ |
| Update frequency | Every 2 months | Monthly โ better |
| Ads | No | No |
| In-app purchases | Yes | No โ better |
| Monetization | Free with in-app purchases | โ |
| Devices | iPhone, iPad, iPod โ better | iPhone |
| Requires iOS | 16.0 | 16.0 |
| Further details โ not scored | ||
| Size | 93 MB | 66 MB |
| Age rating | 4+ | 17+ |
| Developer | Switch168 Communications Corporation | Connexa GmbH (CH) |
In-app purchases
Kosmos Hi Lo
- 100 Koins$0.99
- 200 Koins$1.99
- 500 Koins$4.99
Krypta ECC
No in-app purchases








