OpenSourceInitiative vs SJ Chmod Calculator
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
OpenSourceInitiative
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Open source initiative website app For over 20 years the Open Source Initiative (OSI) has worked to raise awareness and adoption of open source software, and build bridges between open source communities of practice. As a global non-profit, the OSI champions software freedom in society through education, collaboration, and infrastructure, stewarding the Open Source Definition (OSD), and preventing abuse of the ideals and ethos inherent to the open source movement. Open source software is made by many people and distributed under an OSD-compliant license which grants all the rights to use, study, change, and share the software in modified and unmodified form. Software freedom is essential to enabling community development of open source software.
SJ Chmod Calculator
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SJ Chmod Calculator is a free iOS app designed for system administrators, developers, and Linux/Unix users who need to quickly and accurately calculate, understand, and convert Unix file permissions. With its clear and intuitive interface, the app makes it easy to switch between numeric and symbolic representations of file permissions. SJ Chmod Calculator offers two simple methods to obtain or verify file or directory access rights. First mode: Numeric code input (755, 644, 600, etc.) The user enters a 3-digit chmod value. The app instantly displays: β A permissions table (read, write, execute) for each category: User (owner), Group, Others β The equivalent symbolic notation (e.g., rwxr-xr-x) Second mode: Interactive table input The user simply checks the boxes for read (R), write (W), and execute (X) for each category. The app automatically calculates: β The corresponding numeric chmod value β The Unix symbolic permission string Key features: β Instant conversion between numeric and symbolic notation β Visual table of permissions by category (user, group, others) β Intuitive interface, easy to use β Free application A practical tool for all Linux/Unix users Whether youβre a developer, system administrator, student, or advanced user of Unix/Linux systems, SJ Chmod Calculator helps you manage file permissions quickly and effortlessly.
Screenshots
Verdict
The clearest difference is in-app purchases: OpenSourceInitiative at none against SJ Chmod Calculator's 5. OpenSourceInitiative also leads on ads (none vs shown) and iOS requirement (11.0 vs 16.0). SJ Chmod Calculator's advantage is update cadence (weekly vs monthly). On price and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. SJ Chmod Calculator sells 5 one-off in-app purchases. OpenSourceInitiative asks for nothing beyond the download.
OpenSourceInitiative ships an update monthly, SJ Chmod Calculator weekly. The most recent releases landed on September 10, 2026 and September 7, 2026 respectively.
| Parameter | OpenSourceInitiative | SJ Chmod Calculator |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Weekly β better |
| Ads | No β better | Yes |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPad, iPod β better | iPhone, iPad |
| Requires iOS | 11.0 β better | 16.0 |
| Further details β not scored | ||
| Size | 21 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Meir Tsvi | Stephane JAILLIARD |
In-app purchases
OpenSourceInitiative
No in-app purchases
SJ Chmod Calculator
- A coffee$0.99
- A cookie$2.99
- A lemon tart$4.99
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- No ads$4.99
- A pizza$9.99
Questions
Is OpenSourceInitiative free?
Is SJ Chmod Calculator free?
Do OpenSourceInitiative or SJ Chmod Calculator have ads?
Which is updated more often, OpenSourceInitiative or SJ Chmod Calculator?
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