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.
Week 53
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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.
Week Number Calendar
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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
Verdict
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
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.
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.
| Parameter | Week 53 | Week Number Calendar |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 3 weeks โ better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad โ better | iPhone |
| Requires iOS | 16.2 | 16.0 โ better |
| Further details โ not scored | ||
| Size | 1 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Jackson Holbrook | Maksim Efremov |
In-app purchases
Week 53
- Week 53 Lifetime Access$3.99
Week Number Calendar
- Premium7 Days trial$0.991 Month
Questions
Is Week 53 free?
Is Week Number Calendar free?
Do Week 53 or Week Number Calendar have ads?
Which is updated more often, Week 53 or Week Number Calendar?
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