# CyberCalc - Cyberpunk Calculator with Encrypted Secret Notepad

> CyberCalc is a free cyberpunk-style calculator hiding an AES-256 encrypted notepad behind secret operation codes. Offline, ad-free, no tracking.

Canonical: https://oxisoft.io/apps/cybercalc/

**CyberCalc** is a futuristic calculator featuring a distinctive cyberpunk aesthetic with neon colors and digital distortion effects. Beyond its sleek calculator interface lies a powerful encrypted notepad accessible only through secret operation codes.


#### Key Features:

- **Cyberpunk Design:** Striking futuristic interface with neon colors and digital effects.
- **Full Calculator:** Complete arithmetic operations with calculation history.
- **Secret Notepad:** Hidden encrypted storage accessible via custom operation codes.
- **Multiple Vaults:** Create separate encrypted storage areas with different codes.
- **AES-256 Encryption:** Military-grade encryption for all stored notes.
- **Offline Only:** All data stays on your device, no cloud sync.

#### How It Works:

1. **Calculator Mode:** Use as a standard calculator with full functionality
2. **Secret Access:** Enter your custom operation code (e.g., 5*17-22=) to unlock
3. **Encrypted Notes:** Create and manage notes in your private vault
4. **Multiple Storages:** Different codes unlock completely separate encrypted areas
5. **Auto-Lock:** Automatic return to calculator mode after inactivity

#### Security Features:

- **Local Encryption:** All notes encrypted with AES-256 before storage
- **No Recovery:** Forgotten codes cannot be recovered (by design)
- **Self-Destruct:** Optional emergency wipe of all encrypted data
- **No Cloud:** Data never leaves your device
- **Session Timeout:** Automatic lock after configurable period

#### Important Notes:

- Secret codes cannot be recovered if forgotten
- Each code unlocks a completely separate storage area
- Self-destruct permanently deletes all data with no recovery
- Physical device security is your responsibility

A calculator that keeps your secrets safe - CyberCalc.