OnlyWeekNo. vs Korean Age Calculator
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
OnlyWeekNo.
Read full descriptionHide full description
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.
Korean Age Calculator
Read full descriptionHide full description
Enter your birth date and instantly get both your International age and Korean age. The app supports keyboard input and calendar selection, and also shows days until your next birthday, zodiac sign, and Korean zodiac. It automatically adapts to Korean, English, or Spanish based on region/language settings.
Screenshots
Verdict
The clearest difference is in-app purchases: Korean Age Calculator at none against OnlyWeekNo.'s 1. Korean Age Calculator also leads on update cadence (every 3 days vs every 2 months). OnlyWeekNo.'s advantage is iOS requirement (16.0 vs 18.2). On price, ads and device support 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
Both are free to download. OnlyWeekNo. sells 1 one-off in-app purchase. Korean Age Calculator asks for nothing beyond the download.
OnlyWeekNo. ships an update every 2 months, Korean Age Calculator every 3 days. The most recent releases landed on October 27, 2026 and November 2, 2026 respectively.
| Parameter | OnlyWeekNo. | Korean Age Calculator |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 3 days β better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No β better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 β better | 18.2 |
| Further details β not scored | ||
| Size | 4 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Takenori Kabeya | Silverlute Company |
In-app purchases
OnlyWeekNo.
- Disable Advertising$0.49
Korean Age Calculator
No in-app purchases
Questions
Is OnlyWeekNo. free?
Is Korean Age Calculator free?
Do OnlyWeekNo. or Korean Age Calculator have ads?
Which is updated more often, OnlyWeekNo. or Korean Age Calculator?
Other comparisons
