Your device only
Messages, media, contacts and PIN keys are stored locally, encrypted.
Secret messenger
2 languages
Android · iOS
A messenger,
hidden behind a calculator
Secure chats, calls and groups — inside an ordinary finance app. Your conversations stay only on your device: we don't store them on the server.
- E2E
- encryption
- 0
- chat storage
- PIN
- secret entry
Two layers in one app
Outside — a calculator and currencies. Inside — your private chat.
-
1
Open it as a calculator
Calculations, scientific mode, converter and exchange rates — nothing suspicious.
-
2
Create a PIN
At least 4 digits. It is saved automatically on first entry.
-
3
Enter the PIN and hold "="
Type the digits on the calculator display, then hold "=" for about a second.
-
4
Chat privately
Chats, media, calls, groups. Push can be disguised as a currency rate.
What others see — and what you see
What people around you see
- Calculator and unit converter
- Currency rates list
- "Calculator" or "Notes" icon
What you see
- Encrypted chats and calls
- Panic PIN with a decoy screen
- Device transfer and backup
Everything you need for private communication
The messenger is the heart of CalkTalk. The calculator is a convincing cover.
Secret messenger
Private and group chats, media, voice messages, video calls. History stays on device only.
Stealth disguise
Push like a BTC rate. Panic PIN. Change the home screen icon.
English & Russian
The calculator and messenger interface is available in English and Russian.
Calculator cover
Basic and scientific mode, converter — a fully functional tool.
Currency rates
Track currencies and a believable backdrop for notifications.