ZeroPing Almanac

Barricaded Labs

About this app

ZeroPing Almanac is a privacy-first reference and calculator suite for developers, sysadmins, and network engineers. All 16 tools run entirely on-device. No internet connection. No account. No ads. No analytics.

This is not a marketing claim. The app holds no INTERNET permission in its manifest at all - not restricted, simply absent. It has no way to phone home.

NETWORK
Subnet Calculator - IPv4, IPv6, VLSM, and containment checks computed locally
Port Lookup - curated TCP/UDP service reference
MAC Vendor Lookup - full offline IEEE OUI database bundled in the app
Router Credentials - default factory login reference for common devices

SECURITY
Security Vault - MD5/SHA hashing, password generator with entropy meter, Diceware passphrases, and TOTP with hardware-backed at-rest encryption and password-encrypted backup
JWT Decoder - inspect headers and payloads without sending tokens to a third-party service
Random Bytes - crypto-grade random output in hex, base64, or decimal

ENCODING & CODES
QR Generator - Wi-Fi, vCard, URL, and plain text payloads, generated on-device
Encoders - Base64, URL/percent, and HTML entity encoding and decoding
UUID Generator - v4 random and v7 time-ordered
Regex Tester - live pattern matching with match highlighting
Colour Converter - HEX, RGB, HSL, and OKLCH

TIME & DATA
Unix Timestamp - epoch-to-human and human-to-epoch, both directions
Cron Explainer - 5-field and 6-field expressions, named months and weekdays, ranges, lists, and steps

REFERENCE & UTILITIES
IT Data Converter - storage, bandwidth, time, and number base conversion
Cheat Sheets - 12 offline quick-reference cards: Bash, Docker, Git, JavaScript, Linux, Markdown, Python, Regex, SSH, SQL, tmux, Vim

MORE FEATURES
- Searchable history across 15 tools (TOTP and raw hashes excluded for security)
- Customisable home screen - pin and reorder your most-used tools
- Home screen widgets for Subnet Calculator and TOTP
- Quick Settings tile for instant access from any screen
- Encrypted backup and restore (PBKDF2 + AES-GCM)
- Automation support via ContentProvider (Tasker, ADB, scripts)
- Material 3 design, supports dark and light theme

No data leaves your device. Ever.
Built by Barricaded Labs.

What’s new

The app is now called ZeroPing Almanac. The name better reflects what it is: a reference and calculator suite for network and IT work, all offline. Nothing else has changed. Same tools, same privacy guarantee, no internet permission.