# Krypta Chat: Secure Messenger — Secret chat in a calculator

> Secret chat in a calculator (iPhone/iPad app by Connexa GmbH (CH).)

- Source: https://appshunter.io/ios/app/krypta-chat-secure-messenger/id6754332196 (this page in markdown: same URL + `.md`)
- Developer: [Connexa GmbH (CH)](https://appshunter.io/developer/1721968560)
- Category: Social Networking, Utilities
- Price: Free
- Age rating: 12+
- Requires: iOS 17.0 · 17 MB
- Languages: American English, Dutch, French (France), German (Germany), Italian, European Portuguese, European Spanish
- Released: 2026-03-25
- Data updated: 2026-11-05

## What is Krypta Chat?

Krypta Chat is a private messenger with end-to-end encryption. No phone number, no email, no trackers, no ads. If you like, Krypta opens as a fully working calculator, and only your secret code opens your chats.

NO PHONE NUMBER, NO EMAIL
You don't need an account with your name. Krypta creates an anonymous ID; you add contacts by QR code or ID. Strangers can only send you a request that you have to accept.

A CALCULATOR WITH A SECRET (OPTIONAL)
During setup you can disguise Krypta as a calculator that really calculates. Your own secret code followed by "=" opens your chats. A separate erase code deletes everything instantly if you ever need it.

DELIVERED WITHOUT A TRACE
Every message is end-to-end encrypted: only you and the person you write to can read it, not the server and not us. Messages are deleted from the server as soon as your contact has received them. Disappearing messages, delete after reading, view once and password-protected messages let you decide how long something exists.

EVERYTHING A MESSENGER NEEDS
• One-to-one and group chats
• Photos, videos, voice messages and files, encrypted
• Replies, reactions, editing, search, mute, pin, archive
• Notifications show who wrote, never what they wrote

PROTECTION FOR YOUR IPHONE
• Face ID and an additional vault password
• Emergency button deletes everything instantly if you choose
• Automatic erase if you don't open Krypta for a period you choose
• Protection against screenshots and screen recordings

VERIFIABLE SECURITY
X3DH and Double Ratchet, XChaCha20-Poly1305, Argon2id. Safety numbers and key transparency show whether anyone has come between you.

NO TRACKERS, NO ADS
Krypta contains no analytics tools and no advertising.

SAFE TOGETHER
Report and block contacts and messages right in the chat. We review every report.

Krypta Chat is developed by Connexa GmbH in Switzerland.
Privacy policy: https://connexa-gmbh.ch/krypta/datenschutz

## Is Krypta Chat safe?

Not enough ratings yet to assess Krypta Chat.

## Is Krypta Chat legit?

Krypta Chat: Secure Messenger appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Krypta Chat is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 5.0.0 — 2026-11-02

Krypta is now a completely new, native iPhone app:
• Group chats, photos, videos, voice messages and files, end-to-end encrypted
• Optional calculator disguise with your own secret code and erase code
• Replies, reactions, editing, search, archive
• Notifications show the sender, never the content
• Report and block contacts and messages
• Emergency button and automatic erase

### 2.0.0 — 2026-05-16

This update brings the biggest security and design overhaul the app has ever seen.

• Completely reworked end-to-end encryption using modern Signal Protocol v3
• Enhanced protection against replay, timing, and traffic analysis attacks
• Improved device and storage security including root/jailbreak detection and screenshot prevention
• New vault and emergency wipe system with advanced protection against unauthorized access attempts
• Safety numbers, QR verification, and new contact verification features
• Delivery and read receipts now optionally configurable
• Complete redesign featuring a new pure black theme
• New tutorial and setup onboarding with interactive previews
• Numerous stability, performance, and security improvements

### 1.2 — 2026-03-26

What's New in Version 1.2.0

Fixed calculator layout on iPad: buttons no longer get cut off and respond correctly to taps on all screen sizes
Fixed the equals (=) button not triggering calculations
Fixed UI elements overlapping with the navigation bar across all screens (chat list, chat view, new chat, decoy messenger)
Constrained calculator to a reasonable max width/height on iPad for better usability
Messages in chat now anchor to the bottom of the screen instead of the top
Updated app display name

### 1.0 — 2026-03-25

No release notes.

## Apps similar to Krypta Chat

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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## More apps by Connexa GmbH (CH)

- [NoMask](https://appshunter.io/ios/app/nomask/id6743372586)
- [BlueLocation](https://appshunter.io/ios/app/bluelocation/id6752529353)
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- [HeartDistance: Couples Widget](https://appshunter.io/ios/app/heartdistance-couples-widget/id6754918119)
- [Bluetooth Finder & Tracker](https://appshunter.io/ios/app/bluetooth-finder-and-tracker/id6757244854)

All apps by Connexa GmbH (CH): https://appshunter.io/developer/1721968560

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-05.*