Kryptos

about

description

Kryptos encrypts messages directly inside the chat, so you never have to switch between apps. The Kryptos keyboard installs like any other system keyboard: enable it once, and it will be available everywhere you type. Write a message in WhatsApp, Telegram, or SMS, tap the lock icon, and the text in the input field is instantly replaced with ciphertext ready to send. Incoming messages are decrypted automatically, directly on top of the chat as you scroll, with no copying or app switching required. Both the keyboard and on-screen decryption are built into the system, so they work in any app. Encryption: the Signal Protocol, powered by the official Signal libsignal library, a new key for every message, and protection against future quantum computers. Contacts can be verified using a safety code. If a full chat protocol is more than you need, there is a simple mode based on a shared password. PGP is also built in for users who rely on it. To the messenger, the encrypted message looks like nothing more than a meaningless string of characters with no recognizable markers. Steganography hides the very fact that a message was written. Encrypted text can be hidden inside an ordinary photo or disguised as a harmless-looking sequence of real words. Without the password, the hidden content cannot be extracted from the image. Nothing connects to the internet: the app contains no networking code. Kryptos requests only the permissions it needs for QR code scanning, vibration, and overlay functionality. No accounts, phone numbers, servers, or analytics. Keys are generated directly on the device, stored in Android’s secure keystore, and never leave it. Access to the app can be protected with biometrics or a password. There is also a panic-wipe password: entering it into the same password field permanently deletes all stored data. The clipboard is cleared automatically, messages can be set to disappear after a timer, and screenshots and the app preview in the recent-apps screen can be blocked. All your keys can also be exported to a single password-protected file for transfer to a new phone. Also included: light and dark themes, multiple app languages, a step-by-step guide with answers to frequently asked questions, emoji support, and fully offline autocorrect for English, Russian, German, and Persian, plus pinyin input for Chinese.

publisher

78ce6faa72264387284e647ba6938995735ec8c7d5c5a65737e55130f026307d

first seen

2026-09-21T02:13:44.631127+00:00

last event

2026-10-08 01:32 UTC

install

zapstore.dev or any Zapstore-compatible client

source & build

repository

https://github.com/swisslite/kryptos

arch flags

android-arm64-v8a android-armeabi-v7a

manifest

missing

releases (kind 30063)

1 release indexed; latest 2.4.

version	channel	released	event
2.4	main	2026-09-20 23:53 UTC	535d5437…

assets & verification

Every app, release and asset event is schnorr-verified (NIP-01 id + signature) before it enters the catalog, and assets are content-addressed by sha256. We subscribe read-only to the catalog relay — never write to it.

2.4 — Kryptos.apk

sha256

74c903e4b9493fdc6ad5a94b7eded9fd4f00a6407ccdd14c65cbf760befb086a

size

24.7 MB

archs

android-arm64-v8a, android-armeabi-v7a

version code

13

apk cert sha256

6470246992edc4a44478d40cb84fcb2bb08138162794c4ae951f5d4b8faf8e54

download

Kryptos.apk

2.4 — Kryptos.apk

sha256

00c6a3565959498709a4458f30e540df3f9125d63c55ba4706f44e17d854f492

size

24.7 MB

archs

android-arm64-v8a, android-armeabi-v7a

version code

13

apk cert sha256

6470246992edc4a44478d40cb84fcb2bb08138162794c4ae951f5d4b8faf8e54

download

Kryptos.apk

Showing the newest 2 asset descriptors; the full set is in /api/apps/78ce6faa…