Comparison

Week 53 vs Week Number Calendar

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

Head to head
About

Week 53

Features
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Week 53 is a fiscal calendar utility that allows you to quickly access your fiscal calendar in digital form. It supports various types of fiscal calendars (4-4-5, 4-5-4, and 5-4-4) and dynamically generates the calendar based on the start date of your fiscal year. It also offers support for marking holidays with visual cues for year-over-year shifts in holiday timing.

About

Week Number Calendar

Features
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Week Number Calendar - ISO 8601 Standard A simple, clean calendar built around ISO 8601 week numbers. Perfect for business planning, project management, and international coordination. FREE: - The number of the current week, always visible - The calendar for the current year - Current week and current day highlighted - Available in English, Russian, German, Swedish, Danish and Norwegian PREMIUM SUBSCRIPTION: - Every ISO 8601 week number, across the whole year - Calendars for every year, past and future ABOUT ISO 8601 WEEK NUMBERS: Week numbers follow the international ISO 8601 standard, widely used in business worldwide. The first week of the year is the week containing the first Thursday, or equivalently, the week containing January 4th. This standard ensures consistent week numbering across countries and organizations, making it ideal for: - Business scheduling and planning - Project timelines and milestones - International team coordination - Manufacturing and logistics - Any work requiring precise week references SUBSCRIPTION DETAILS: Week Number Calendar Premium costs $0.99 per month and starts with a 7-day free trial. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period. You can manage or cancel it at any time in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://github.com/4id-me/week-calendar-support/blob/main/PRIVACY.md Note: Due to the ISO 8601 standard, years can have 52 or 53 weeks, and dates near year boundaries may belong to the previous or next year's week count.

Screenshots

Week 533 screens
Week Number Calendar2 screens

Verdict

The call

The clearest difference is update cadence: Week Number Calendar at every 3 weeks against Week 53's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Week 53 sells 1 one-off in-app purchase and Week Number Calendar sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Week 53 ships an update every 2 months, Week Number Calendar every 3 weeks. The most recent releases landed on October 27, 2026 and November 5, 2026 respectively.

Scorecard1 real difference ยท 5 level
Week 53 versus Week Number Calendar: the parameters behind the verdict, then further details
ParameterWeek 53Week Number Calendar
PriceFreeFree
Update frequencyEvery 2 monthsEvery 3 weeks โ€” better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad โ€” betteriPhone
Requires iOS16.216.0 โ€” better
Further details โ€” not scored
Size1 MB2 MB
Age rating4+4+
DeveloperJackson HolbrookMaksim Efremov

In-app purchases

1 purchases

Week 53

One-time1
  • Week 53 Lifetime Access$3.99
1 purchases

Week Number Calendar

Subscriptions1
  • Premium7 Days trial$0.991 Month

Questions

Is Week 53 free?
Week 53 is free to download, with in-app purchases available.
Is Week Number Calendar free?
Week Number Calendar is free to download, with in-app purchases available.
Do Week 53 or Week Number Calendar have ads?
Neither Week 53 nor Week Number Calendar shows ads.
Which is updated more often, Week 53 or Week Number Calendar?
Week 53 ships an update every 2 months, and Week Number Calendar every 3 weeks. Most recently, Week 53 was updated on October 27, 2026 and Week Number Calendar on November 5, 2026.

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