when vs World Flags Challenges
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
when
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"ๅๆฌกๅ ๅนด่กจ" is a project where users collaborate to build a database that encompasses all historical events, from the origins of the universe to the endless "now", regardless of the field. It aims to accurately display both temporal and spatial distances by making "where" as important as "when".
World Flags Challenges
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Challenge your knowledge of flags from around the world with Guess the Country: Flag Quiz! This engaging and educational game offers two modes: Multiple Choice Quiz and Written Mode. As you progress, the difficulty increases, keeping you entertained and learning. Track your high score and compete with friends. Perfect for geography enthusiasts and learners of all ages. Available in English, Spanish, and Portuguese. Download now and put your flag knowledge to the test!
Screenshots
Verdict
The clearest difference is ads: when at none against World Flags Challenges's shown. World Flags Challenges's advantage is update cadence (every 2 days vs every 3 weeks). On price, in-app purchases, device support and iOS requirement 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. Neither carries in-app purchases, so what you see is what you pay.
when ships an update every 3 weeks, World Flags Challenges every 2 days. The most recent releases landed on October 25, 2026 and October 27, 2026 respectively.
| Parameter | when | World Flags Challenges |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | Every 2 days โ better |
| Ads | No โ better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details โ not scored | ||
| Size | 30 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Hiroe Oshimura | Vinicius Fortes |
In-app purchases
when
No in-app purchases
World Flags Challenges
No in-app purchases
Questions
Is when free?
Is World Flags Challenges free?
Do when or World Flags Challenges have ads?
Which is updated more often, when or World Flags Challenges?
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