OnlyWeekNo. vs Week #
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OnlyWeekNo.
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You can choose the first day of the week, like starting with Sunday or Monday? And you can also choose a rule for the first week of the year. Like ISO 8601, you can choose the first Thursday week as the 1st week, or January 1st as the 1st week, or else.
Week #
Quickly find the current week number with a clean and fast interface. This app offers an ad-free experience with no data collection or tracking. Customize the week start day for your convenience.
- Instant week number display
- Minimalistic interface
- Ad-free experience
- Zero data collection
- Customizable week start day
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Week # is the simplest way to check the current week number — nothing more, nothing less. Designed to be clean, quiet, and fast. • Minimalistic interface • Instant week number at a glance • Optional settings for week start (Monday/Sunday) • Zero data collected — nothing leaves your device • No accounts. No ads. No tracking. Ever. A small, focused tool that does one thing well.
Screenshots
Verdict
The clearest difference is in-app purchases: Week # at none against OnlyWeekNo.'s 1. Week # also leads on ads (none vs shown) and update cadence (every 9 days vs every 2 months). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. OnlyWeekNo. sells 1 one-off in-app purchase. Week # asks for nothing beyond the download.
OnlyWeekNo. ships an update every 2 months, Week # every 9 days. The most recent releases landed on September 17, 2026 and July 17, 2026 respectively.
| Parameter | OnlyWeekNo. | Week # |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Every 9 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 14.0 — better |
| Further details — not scored | ||
| Size | 4 MB | 3 MB |
| Age rating | 4+ | 17+ |
| Developer | Takenori Kabeya | Morning Mark LLC |
In-app purchases
OnlyWeekNo.
- Disable Advertising$0.49
Week #
No in-app purchases
