Is Kryptos safe?

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 decrypte…

Developer: datakeeper
Category: Messaging
Earliest archived version: 05 Sept 2026
License: AGPL-3.0-only (per F-Droid metadata)

02 / Release notes

Release notes from F-Droid

22 Sept 2026

2.4

IMPORTANT: 2.4 is not compatible with older versions, both sides have to update. The language key is now a globe, hold it to switch keyboards. Comma key instead of emoji. New settings: vibration, key text size, key enlargement, automatic capitals. The cursor moves with a finger. Chats can go into…

Full notes →

05 Sept 2026

2.3.3

Kryptos 2.3.3 New features - Persian language - Voice input has been added to the keyboard - Keyboards have been adjusted to the system size. Larger letters, taller keys, wider spacing - App lock has been redesigned Bug fixes - When launching Kryptos, it no longer contacts Google services to load…

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03 / Package identity

Technical fingerprint

Application IDcom.kryptos.android

Latest APK SHA-25600c6a3565959498709a4458f30e540df3f9125d63c55ba4706f44e17d854f492

Signing certificate64:70:24:69:92:ED:C4:A4:44:78:D4:0C:B8:4F:CB:2B:B0:81:38:16:27:94:C4:AE:95:1F:5D:4B:8F:AF:8E:54

MIN ANDROID26TARGET34ARCHITECTUREarm64-v8a · armeabi-v7a

04 / History

Archive history

2 versions in WIKI archive: earliest 2.3.3 (05 Sept 2026), latest 2.4 (22 Sept 2026).

No change in android.permission.* between 2.3.3 and 2.4.

05 / Version archive

Documented releases

2 TOTAL

VersionReleasedAndroidArchitecture

2.422 Sept 202626+arm64-v8a, armeabi-v7a→2.3.305 Sept 202626+arm64-v8a, armeabi-v7a→

06 / Safety & access

Safety verdict

Authentic — file hash matches the source indexNo ads or tracking flagged by the source

IntegritySHA-256 verified vs source

SourceOpen-source · fdroid

Permissions7 declared · 2 sensitive

Signaturepresent

Anti-featuresNo known anti-features

Sensitive accessCAMERARECORD_AUDIO

Declared permissions

android.permission.CAMERA android.permission.HIDE_OVERLAY_WINDOWS android.permission.RECORD_AUDIO android.permission.USE_BIOMETRIC android.permission.USE_FINGERPRINT android.permission.VIBRATE com.kryptos.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Tracker status: Not assessed by WIKI for Android.

07 / Sources

Evidence ledger

Each entry is a captured public reference backing this record.

RepositorySource package page↗Source codeSource repository↗