Krypta ECC vs Tesseract Network
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Krypta ECC
Read full descriptionHide full description
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: ⢠By username: search and connect directly with another Krypta ECC user. ⢠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: ⢠Firestore: Real-time chat and message storage ⢠Firebase Authentication: Secure and simple user management ⢠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 ā just secure, private communication. Content Moderation Krypta ECC includes comprehensive content moderation: ⢠Automatic filtering of objectionable content ⢠Report functionality for inappropriate behavior ⢠Block functionality to remove unwanted contacts ⢠Developer contact information available in Settings ⢠All reports reviewed within 24 hours
Tesseract Network
Read full descriptionHide full description
Tesseract ā private messaging that leaves no trail. No accounts. No phone numbers. No cloud history. Add a friend with a one-time invite code, pick an emoji for each other, and start talking. Every message is end-to-end encrypted; the relay only ever sees opaque bytes. Your identity lives in this device's secure keychain. Reinstall the app and it's gone ā nothing is recoverable, from us or anyone else. What you get for free ⢠End-to-end encrypted 1:1 chat (X25519 + AES-256-GCM) ⢠Emoji-based contacts instead of names or numbers ⢠Invite codes that expire in 24 hours or on first use ⢠Notification Disguise ā 10 preset alt-icons and lock-screen texts ⢠App Lock with PIN + optional silent Duress PIN ⢠Minimalist brutalist interface built for speed Unlock TESSERACT PLUS for the full suite ⢠TOR ROUTING ā every request tunneled through Tor; the relay sees an exit node, never you ⢠GHOST TEXT ā messages your eye reads but cameras average away ⢠PIXEL SHATTER ā text realigns only at the owner's viewing angle ⢠CUSTOM TIMER ā self-destructing messages that vanish from both phones ⢠PHOTOS Ā· VIDEOS Ā· GIFS ā end-to-end encrypted media ⢠30-DAY MAILBOX ā missed messages held longer Tesseract does not have a "delete for everyone" button because there is nothing to delete. Messages don't live on a server. The relay is a dumb pipe. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://keniprimo.github.io/SecretR00M/privacy.html Open source: https://github.com/keniprimo/SecretR00M
Screenshots
Verdict
The clearest difference is in-app purchases: Krypta ECC at none against Tesseract Network's 2. Tesseract Network's advantage is update cadence (every 3 days vs monthly) and device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.
Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS
Both are free to download. Tesseract Network sells 2 in-app purchases, starting at $4.99 per month. Krypta ECC asks for nothing beyond the download.
Krypta ECC ships an update monthly, Tesseract Network every 3 days. Both last shipped on October 18, 2026.
| Parameter | Krypta ECC | Tesseract Network |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 3 days ā better |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPhone | iPhone, iPad, Mac ā better |
| Requires iOS | 16.0 | 16.0 |
| Further details ā not scored | ||
| Size | 66 MB | 64 MB |
| Age rating | 17+ | 4+ |
| Developer | Connexa GmbH (CH) | Kevin Kulcsar |
In-app purchases
Krypta ECC
No in-app purchases
Tesseract Network
- Tesseract Plus Ā· Monthly3 Days trial$4.991 Month
- Tesseract Plus Ā· Yearly3 Days trial$39.991 Year









