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Chmod Toolkit

Chmod Toolkit

Master permissions & cert prep

4 ratings
2 reviews
🔧 Utilities
🛠️ Developer Tools
Free
In-App Purchases

Details

Released
January 6, 2026
Updated
November 7, 2026

Features

Developer

StarPhenomenon LLC
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Chmod Toolkit screenshot #1 for iPhone
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iphone
iphoneDuo
ipad
🧾$14.99
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About

Master Unix permissions and prepare for Linux certification exams with this comprehensive learning tool. It offers simulated exams, spaced repetition learning, and detailed progress tracking across multiple Apple devices. Learn concepts, practice with quizzes, and prove your knowledge.

✓Simulated certification exams (Linux+, LPIC-1, RHCSA)
✓Spaced repetition for effective learning
✓Eight question types for varied practice
✓Domain-specific study and progress tracking
✓Detailed stats dashboard with growth charts
✓Cross-device iCloud sync
✓On-device permission calculation and scanning
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+1

What's New in Chmod Toolkit

3.4.1

November 7, 2026

Small fixes and text improvements.

2

Subscriptions & In-App Purchases

$14.99

Pro Features

Advanced security scanner for Linux file permissions.

Events

Read more about Ready for iPhone Duo
Event EndedMajor Update

Ready for iPhone Duo

Every screen lays out for the fold.

Oct 25, 2026 — Nov 8, 2026

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User reviews

Most RecentHighest RatedLowest Rated

Simple, useful and educational

Chmod Toolkit is a simple but extremely useful app. It makes working with Linux file permissions much easier by clearly showing chmod values and permission combinations. The built-in quizzes are a great addition and really make you think through how permissions work instead of just memorizing numbers. Clean, practical, and perfect for quick reference.
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PPatoumd

Nothing like it

Currently prepping for Linux+ and this is the first study app that actually feels like exam prep, not just a quiz. The domain tracking shows me where I'm weak before I even take the exam.  Nothing like it covers permissions that I’ve been seen. Going into exam day will feel way more prepared with permissions, which is my weakest area.
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BOBIG G ONE

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FAQ

What Linux certification exams does Chmod Toolkit prepare you for?

Chmod Toolkit prepares you for CompTIA Linux+ (XK0-006), LPIC-1, and RHCSA exams. It offers exam-specific modes that simulate the methodology and scoring of each certification.

How does Chmod Toolkit help users master permissions?

It goes beyond memorization by using spaced repetition based on accuracy and offering eight different question types. When you get an answer wrong, it shows you exactly what your answer would do, bit by bit, next to the correct one.

What kind of practice questions are available in Chmod Toolkit?

Chmod Toolkit features multiple choice, type the octal, symbolic conversion, true/false, scenarios, fill-in-the-blank, typed commands, and multi-step task planning questions. This variety keeps your learning sharp.

Can I track my progress and identify areas for improvement with Chmod Toolkit?

Yes, a full stats dashboard with interactive charts displays your accuracy trends, category strengths, question type performance, and certification readiness. Domain-by-domain results pinpoint exactly where you need to focus.

Does Chmod Toolkit offer simulated exam experiences?

Absolutely. It provides three cert-specific exam modes that match actual exam methodology, including timers, scaled scoring, and the ability to skip, flag, and return to questions.

What devices are supported by Chmod Toolkit?

Chmod Toolkit is built for every Apple device, including iPhone, iPad, and Mac. It offers optimized layouts and features for each, with iCloud sync ensuring your progress is consistent across all your devices.

Is Chmod Toolkit free to use?

Yes, Chmod Toolkit is available for free. The app also states that one purchase includes all future updates, with no subscription required.

Does Chmod Toolkit have ads?

No, Chmod Toolkit does not contain advertisements. The app is designed to be ad-free, allowing for an uninterrupted learning experience.