chmod util vs CHMOD Lab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
chmod util
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chmod util helps you understand and build Unix file permissions. Tap r, w, and x for the owner, group, and everyone else, and see the corresponding chmod number instantly. Choose common modes such as 644, 755, and 600, each with a clear explanation of who gets access. A built-in, manual explains the essentials: - What read, write, and execute mean. - How permissions differ for files and directories. - How to remember the 4–2–1 rule. - All eight permission patterns in a handy cheat sheet. - Practical examples of chmod commands. A small, focused companion for developers, students, and anyone learning Unix permissions.
CHMOD Lab
This app provides an interactive sandbox and calculator to help users understand and manage Linux file permissions. It bridges the gap between octal and symbolic notation with real-time updates and visual representations.
- Interactive permission calculator
- Real-time octal and symbolic code updates
- Reverse lookup for permission codes
- Visual permission sandbox
- Built-in cheat sheets
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Stop guessing Linux file permissions. CHMOD Lab is the ultimate interactive sandbox and calculator for developers, SysAdmins, and students who want to master the command line. Whether you are configuring a web server, debugging a script, or studying for your Linux certification, CHMOD Lab bridges the gap between confusing octal numbers (755) and symbolic notation (rwxr-xr-x). FEATURES: • Interactive Calculator: Toggle permissions instantly. Tap "Read," "Write," or "Execute" and watch the Octal and Symbolic codes update in real-time. • Reverse Lookup: Type in a code like "644" and see exactly which permissions are granted. • Visual Sandbox: See permissions visualized to understand "who" can do "what" before you run the command. • Cheat Sheet: Built-in reference guides for common permission patterns. Master the command line. Download CHMOD Lab today.
Screenshots
Verdict
chmod util and CHMOD Lab are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | chmod util | CHMOD Lab |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 63 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 17.6 | 17.6 |
| Further details — not scored | ||
| Size | 2 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Mattia Righetti | Guy Miller |
In-app purchases
chmod util
No in-app purchases
CHMOD Lab
No in-app purchases
