Comparison

Image Timer multiple timers 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

Image Timer multiple timers

Features
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There are six timers that you can use by entering the time, and six timers that you can use by setting the time in advance, and a stopwatch. If the Image Timer is in the background when the timer reaches time, a notification will notify you.

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

Image Timer multiple timers2 screens
SJ Chmod Calculator3 screens

Verdict

The call

The clearest difference is in-app purchases: Image Timer multiple timers at none against SJ Chmod Calculator's 5. Image Timer multiple timers also leads on ads (none vs shown). SJ Chmod Calculator's advantage is update cadence (weekly vs every 51 months). On price, 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. SJ Chmod Calculator sells 5 one-off in-app purchases. Image Timer multiple timers asks for nothing beyond the download.

UpkeepUpdate frequency

Image Timer multiple timers ships an update every 51 months, SJ Chmod Calculator weekly. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

Scorecard3 real differences Β· 3 level
Image Timer multiple timers versus SJ Chmod Calculator: the parameters behind the verdict, then further details
ParameterImage Timer multiple timersSJ Chmod Calculator
PriceFreeFree
Update frequencyEvery 51 monthsWeekly β€” better
AdsNo β€” betterYes
In-app purchasesNo β€” betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 β€” better
Further details β€” not scored
Size427 MB3 MB
Age rating4+4+
DeveloperTomoki HaganoStephane JAILLIARD

In-app purchases

None

Image Timer multiple timers

No in-app purchases

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 Image Timer multiple timers free?
Image Timer multiple timers is free to download, with no in-app purchases.
Is SJ Chmod Calculator free?
SJ Chmod Calculator is free to download, with in-app purchases available.
Do Image Timer multiple timers or SJ Chmod Calculator have ads?
SJ Chmod Calculator shows ads; Image Timer multiple timers does not.
Which is updated more often, Image Timer multiple timers or SJ Chmod Calculator?
Image Timer multiple timers ships an update every 51 months, and SJ Chmod Calculator weekly. Most recently, Image Timer multiple timers was updated on November 7, 2026 and SJ Chmod Calculator on November 4, 2026.

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