Comparison

Conv3rtify vs SJ Chmod Calculator

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

Conv3rtify

Features
Read full description

Conv3rtify is a powerful universal unit conversion tool that will make your life easier. In the app you'll find 3 main sections: - Standard, with some basic units (length, area, volume, mass, angle, time, etc.) - Pro, with more advanced and specific ones (colors, currency, base, and temperature conversion systems) - Favorites, where you can save the units you use the most β€” Pro features are available only with the Conv3rtify+ program. Upgrade to Conv3rtify+ to remove ads & unlock all the powerful capabilities of the app. It's a 1-time paying program: you pay once and you're able to use your app at 100% forever. When our team will come up with new cool features, you'll simply need to enjoy them and you won't be obliged to pay another time. β€” Conv3rtify also allows users to choose between 2 different themes: light and dark mode. There is even the possibility to select an automatic mode that will change the app's theme based on the device's theme.

About

SJ Chmod Calculator

Features
Read full description

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: – A permissions table (read, write, execute) for each category: User (owner), Group, Others – 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: – The corresponding numeric chmod value – The Unix symbolic permission string Key features: – Instant conversion between numeric and symbolic notation – Visual table of permissions by category (user, group, others) – Intuitive interface, easy to use – Free application A practical tool for all Linux/Unix users Whether you’re a developer, system administrator, student, or advanced user of Unix/Linux systems, SJ Chmod Calculator helps you manage file permissions quickly and effortlessly.

Screenshots

Conv3rtify4 screens
SJ Chmod Calculator3 screens

Verdict

The call

The clearest difference is ads: Conv3rtify at none against SJ Chmod Calculator's shown. SJ Chmod Calculator's advantage is update cadence (weekly vs every 26 months). On price, in-app purchases, device support and iOS requirement 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Conv3rtify sells 1 one-off in-app purchase and SJ Chmod Calculator sells 5 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Conv3rtify ships an update every 26 months, SJ Chmod Calculator weekly. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.

Scorecard2 real differences Β· 4 level
Conv3rtify versus SJ Chmod Calculator: the parameters behind the verdict, then further details
ParameterConv3rtifySJ Chmod Calculator
PriceFreeFree
Update frequencyEvery 26 monthsWeekly β€” better
AdsNo β€” betterYes
In-app purchasesYesYes
DevicesiPhone, iPad, iPod β€” betteriPhone, iPad
Requires iOS15.1 β€” better16.0
Further details β€” not scored
Size40 MB3 MB
Age rating4+4+
DeveloperIlya EmeliyanovStephane JAILLIARD

In-app purchases

1 purchases

Conv3rtify

One-time1
  • Conv3rtify+$2.99
5 purchases

SJ Chmod Calculator

One-time5
  • A coffee$0.99
  • A cookie$2.99
  • A lemon tart$4.99
Show 2 more
  • No ads$4.99
  • A pizza$9.99

Questions

Is Conv3rtify free?
Conv3rtify is free to download, with in-app purchases available.
Is SJ Chmod Calculator free?
SJ Chmod Calculator is free to download, with in-app purchases available.
Do Conv3rtify or SJ Chmod Calculator have ads?
SJ Chmod Calculator shows ads; Conv3rtify does not.
Which is updated more often, Conv3rtify or SJ Chmod Calculator?
Conv3rtify ships an update every 26 months, and SJ Chmod Calculator weekly. Most recently, Conv3rtify was updated on October 25, 2026 and SJ Chmod Calculator on October 27, 2026.

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