# FlagDeck - World Flags Quiz — Learn flags, capitals

> Learn flags, capitals (iPhone/iPad app by suhong kim.)

- Source: https://appshunter.io/ios/app/flagdeck-world-flags-quiz/id6776064660 (this page in markdown: same URL + `.md`)
- Developer: [suhong kim](https://appshunter.io/developer/6776064662)
- Category: Education
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 42 MB
- Languages: American English
- Released: 2026-06-03
- Data updated: 2026-07-27
- User reviews in markdown: https://appshunter.io/ios/app/flagdeck-world-flags-quiz/id6776064660/reviews.md

## What is FlagDeck?

FlagDeck is the world flags quiz app that uses science-backed learning to make geography stick.

■ Core Values
• All learning data stays on your device — no account, no sign-up
• SM-2 spaced repetition algorithm: scientifically proven long-term memory formation
• 100% offline: works on planes, subways, anywhere without internet

■ Features

World Flags Quiz
249 ISO 3166-1 official countries in a 4-choice quiz format. Built-in confusable mode for easily mixed-up flags (e.g., Chad vs Romania, New Zealand vs Australia).

SM-2 Spaced Repetition Review
Missed flags and aging cards are automatically queued for review. The SM-2 algorithm calculates optimal review timing based on the Ebbinghaus forgetting curve — maximum retention with minimum study time.

Daily Challenge
10 new questions every day, seeded by date so everyone worldwide faces the same set. Compete with friends and track your streak.

Country Flash Cards
Beyond flags: capitals, currencies, languages, area, population, region, country code, and driving side — all in one card. Perfect for geography exams, trivia, and general knowledge.

Hear Every Name Pronounced
Tap the speaker button to hear any country name or capital spoken in clear, natural English — neural text-to-speech audio bundled right in the app, so it works offline too.

Share Your Score
Save quiz results as a shareable card and post to social media. Challenge your friends to beat your flag recognition score.

Fully Offline
All data is bundled in the app. Every feature works without Wi-Fi, LTE, or any network connection.

■ Data Sources
Country, capital, and currency data: Wikidata (CC0 license). Flag SVGs: flag-icons (MIT license).

■ Privacy
Your learning data, including your nickname and study records, stays on your device and is never transmitted externally. To keep the app free, FlagDeck shows ads (Google AdMob) and collects screen-usage statistics (Google Analytics for Firebase) to improve the service. See our Privacy Policy at https://legal.therene.co.kr/flagdeck/

■ Contact
support@therene.co.kr

Built by a solo developer who simply wanted to memorize country names and capitals. I hope it helps others with the same goal. Feedback is always welcome.


## Version history (last 5 releases)

### 2.0.0 — 2026-07-25

FlagDeck 2.0 — a major update for learners worldwide!

• Hear it spoken: tap the speaker button to hear every country name and capital in clear, natural English — works offline
• Faster quizzes: correct answers advance instantly
• Redesigned home screen with your learning progress at a glance
• Retry the questions you missed right from the results screen
• Better accessibility and lots of polish throughout

### 1.2.1 — 2026-07-04

앱 안정성 및 내부 설정을 개선했습니다.

### 1.2.0 — 2026-07-03

- 앱을 무료로 유지하기 위한 광고가 추가되었습니다. 학습과 퀴즈 진행 중에는 광고가 표시되지 않아요.
- 앱 개선을 위한 화면 이용 통계 수집이 추가되었습니다 (개인 식별 없음).
- 개인정보처리방침이 개정되었습니다.

### 1.1.1 — 2026-06-20

국기를 더 깊이, 더 편하게 배울 수 있도록 업데이트했어요.

  • 국기의 이야기 — 각 국기의 유래와 역사를 담은 스토리를 새로 추가했어요.
  • 밀어서 이어 학습 — 국가 화면을 좌우로 넘기며 다음·이전 국가를 끊김 없이 학습해요.
  • 퀴즈 정답률 한눈에 — 홈에서 누적 정답률과 맞힌 횟수, 연속 학습일을 확인해요.
  • 기록 초기화 — 설정에서 정답률 기록을 새로 시작할 수 있어요.

  더 깔끔해진 화면으로 만나보세요.

### 1.1.0 — 2026-06-14

이번 업데이트로 국기를 '왜 그렇게 생겼는지' 이해하며 외울 수 있어요.

  • 국기의 의미 추가
    전 세계 국가의 국기에 담긴 색과 문양의 의미를 국가 상세 화면에서 한눈에 확인할 수 있습니다.

  • 퀴즈가 더 똑똑해졌어요
    문제를 풀 때 해당 국기의 의미와 수도를 힌트로 함께 보여줘, 풀면서 자연스럽게 익혀집니다.

  • 국기 정확도 개선
    세인트헬레나·아프가니스탄 국기를 최신 도안으로 교체하고, 여러 국가의 국기 설명을 더 정확하게 다듬었습니다.

  피드백은 언제든 환영합니다. 감사합니다!

## More apps by suhong kim

- [RTSP Camera](https://appshunter.io/ios/app/rtsp-camera/id6777669299)

All apps by suhong kim: https://appshunter.io/developer/6776064662

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-27.*