Cmdex
CLI & Syntax Cheat Sheet
$4.99 · Designed for iPad. Not verified for macOS.
Flashcard quizzes with spaced repetition now included. Turn command lookups into muscle memory across Linux, Python, Docker, Git, and 20 more platforms.
Stop re-Googling the same command every few weeks.
Cmdex puts 978 commands across 23 platforms in your pocket — searchable, offline, and organized the way you actually think about them. Whether you're deep in a terminal, debugging a Cisco switch, or writing regex at 2am, the syntax and a real working example are one search away.
WHAT'S INSIDE
• 23 platforms: Linux, Bash scripting, zsh, PowerShell, Python, JavaScript, Ruby, Rust, Swift, Kotlin, Go, C++, SQL, CSS, HTML, Markdown, Docker, Git, YAML/Terraform, Cisco IOS, regex, and pentesting tools
• 978 commands, each with a plain-English explanation and a real, runnable example — not just a syntax stub
• Organized by category and difficulty (beginner / intermediate / advanced), so you're not wading through advanced flags on day one
FIND ANYTHING FAST
• A universal command palette searches every platform at once — type "grep" and see grep, ripgrep, ngrep, and PowerShell's Select-String side by side
• Filter by category, difficulty, or platform
• Compare mode puts equivalent commands from different platforms next to each other
LEARN, DON'T JUST LOOK UP
• Built-in flashcard quiz with spaced repetition — the app tracks what you know, resurfaces what you're shaky on, and builds a daily review streak
• A new "Command of the Day" to build the habit
MAKE IT YOURS
• Favorite commands and organize them into custom collections
• Export a printable PDF cheat sheet for the platforms you care about
• Light and dark themes, both designed for long reading sessions
WORKS OFFLINE
Everything is bundled on-device. No account, no sign-in required — it works on a plane as well as it works at your desk.
Whether you're a student learning your first shell, a developer switching between five languages a day, or a network engineer who only touches Cisco IOS twice a year, Cmdex is the reference you open instead of your search history.
The developer, PAUL MICHAEL MILIONIS, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- PAUL MICHAEL MILIONIS
- Size
- 3.9 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Paul Milionis
