# 3 Letter Quiz — Learn airport & airline codes > Quiz app for learning and memorizing airport and airline codes. (iPhone/iPad app by Sohta Itoh.) - Source: https://appshunter.io/ios/app/3-letter-quiz/id965849712 (this page in markdown: same URL + `.md`) - Developer: [Sohta Itoh](https://appshunter.io/developer/965803614) - Category: Travel, Education - Price: $0.99 - Rating: 1.00/5 from 1 App Store ratings · 8 written reviews indexed - Age rating: 4+ - Requires: iOS 11.0 · 4 MB - Languages: American English, Japanese, Korean, Chinese (Simplified, China) - Released: 2015-03-19 - Data updated: 2026-08-24 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/3-letter-quiz/id965849712/reviews.md ## What is 3 Letter Quiz? "3 Letter Quiz" is a quiz app for learning airport codes and airline codes. This app is recommended for anyone involved with airlines, travel agencies, trading companies, logistics companies, air traffic control, air force, etc. who need to memorize airport codes and airline codes. *** Contents *** You can learn 512 airport and city codes and 123 airline codes from around the world. You can also add airport and airline codes for your own practice. *** Types of codes *** - IATA Airport Codes (3 Letter Codes) - ICAO Airport Codes (4 Letter Codes) - IATA Airline Codes (2 Letter Codes) - ICAO Airline Codes (3 Letter Codes) *** Features *** (1) Quiz (Name -> Code) The name of the airport or airline appears randomly on the screen, and you answer its code. The percentage of correct answers for each code is recorded. You can check off airports and airlines you want to practice intensively and learn them repeatedly. (2) Quick Learning (Name -> Code) The names of airports and airlines appear on the screen one after another in random order. You can learn many airport codes and airline codes efficiently in a short time. (3) Quick Learning (Code -> Name) The codes of airports and airlines appear on the screen one after another in random order. You can learn many airport codes and airline codes efficiently in a short time. (4) List Airport codes and airline codes are listed in a tabular format. You can add new airport codes and airline codes for your own practice. (5) Map The locations of the airports are displayed on the map. You can filter the airports to be displayed by country or level. *** Language *** This app supports 4 languages: English, Japanese, Chinese (Simplified), Korean. ## Key features - Learn 512 airport and 123 airline codes - Quiz modes (Name -> Code, Code -> Name) - Quick learning sessions - Customizable practice lists - Airport map with filtering - Supports 4 languages ## Recent user reviews (8 of 8) All indexed reviews: https://appshunter.io/ios/app/3-letter-quiz/id965849712/reviews.md ### 4/5 — Helpful *2023-03-01, version 2.4.0* It’s a helpful flash card style quiz. ### 4/5 — 無料にしては良い *2021-10-01* が、TXLが閉鎖してるがまだでてるので情報をアップデートして欲しい **Developer response:** コメントありがとうございます。バージョン 2.3.0 にてベルリン・ブランデンブルク空港（BER）の開港とテーゲル空港（TXL）閉鎖を反映しております。 ### 2/5 — 地図が表示されません。 *2021-08-30* せっかく良いアプリなのですが、地図を読み込む際にエラーとなります。改善いただけないでしょうか。 **Developer response:** コメントありがとうございます。iOSバージョンアップに伴う一部端末での地図表示の不具合を、バージョン 2.3.0 にて修正しました。 ### 2/5 — 微妙〜 *2019-04-25* 時間はかかるけど暗記カードアプリ入れて自分で作る方がいいよ 120円払う価値は無い ### 1/5 — Not worth it *2019-01-21* I deleted app after 30 seconds of purchasing. ### 4/5 — good *2019-01-09* 大変助かるアプリです。航空関係者にとってはもってこいのアプリではないでしょうか。ただ、キーボードがとても打ちにくいです…改善していただけると幸いです。よろしくお願い致します。 ### 2/5 — 間違いでは？ *2018-06-26* 但馬空港の正解がTKGと出るが TJHだと思う。 **Developer response:** ご指摘ありがとうございます。バージョンアップ時に修正いたしました。 ### 5/5 — こんなの探してました *2016-04-02* 地図もあって非常に便利です。 ありがとうございました。 ## Frequently asked questions about 3 Letter Quiz ### What types of codes does 3 Letter Quiz teach? 3 Letter Quiz teaches IATA Airport Codes (3 Letter Codes), ICAO Airport Codes (4 Letter Codes), IATA Airline Codes (2 Letter Codes), and ICAO Airline Codes (3 Letter Codes). ### Can I add my own codes to 3 Letter Quiz? Yes, you can add your own airport and airline codes for personalized practice within the app's list feature. ### Does 3 Letter Quiz have ads? No, 3 Letter Quiz does not contain advertisements, offering an uninterrupted learning experience. ### What languages does 3 Letter Quiz support? 3 Letter Quiz supports English, Japanese, Chinese (Simplified), and Korean, making it accessible to a global audience. ### How many airport and airline codes are included in 3 Letter Quiz? The app includes 512 airport and city codes, along with 123 airline codes from around the world. ### Is 3 Letter Quiz available on Android devices? Based on the provided data, 3 Letter Quiz is available on iPhone, iPad, and iPod, but Android compatibility is not specified. ### How often is 3 Letter Quiz updated? The latest version, 2.4.0, was released on November 5, 2022. Update frequency information beyond this is not available. ### What is the price of 3 Letter Quiz? 3 Letter Quiz is a paid application priced at $0.99. ## Version history (last 5 releases) ### 2.4.0 — 2022-11-05 Removed and added some airports and airlines ### 2.3.0 — 2022-10-17 Removed and added some airports and airlines ### 2.1.0 — 2018-07-14 This app has been updated by Apple to display the Apple Watch app icon. (2018/07/14 Ver 2.1.0) Modify airport codes. ### 2.0.3 — 2018-05-01 (2018/05/01 Ver 2.0.3) Modify airport codes. Add Korean and Chinese version. ### 2.0.2 — 2018-04-04 (2018/04/01 Ver. 2.0.1) The screenshots were changed. ## Apps similar to 3 Letter Quiz | App | Rating | Price | Category | | --- | --- | --- | --- | | [E3 OffRoad](https://appshunter.io/ios/app/e3-offroad/id1597512780) | 5.0 (1) | Free | Travel | | [Marine Track](https://appshunter.io/ios/app/marine-track/id1565280460) | — | Free | Travel | | [Chiesa di San Francesco](https://appshunter.io/ios/app/chiesa-di-san-francesco/id1591742980) | — | Free | Travel | | [Paris Audio Guide - Odyssey](https://appshunter.io/ios/app/paris-audio-guide-odyssey/id1597770760) | 4.5 (2) | Free | Travel | | [Museum Alija Izetbegovic](https://appshunter.io/ios/app/museum-alija-izetbegovic/id1602243840) | — | Free | Travel | | [Wildlife Track](https://appshunter.io/ios/app/wildlife-track/id1565280000) | — | Free | Travel | ## More apps by Sohta Itoh - [語呂作](https://appshunter.io/ios/app/id975038233) - [Smart Slide Rule](https://appshunter.io/ios/app/smart-slide-rule/id975047971) - [47 Prefecture Shapes](https://appshunter.io/ios/app/47-prefecture-shapes/id983270781) - [旅のお財布](https://appshunter.io/ios/app/id983276551) - [プレゼン特訓](https://appshunter.io/ios/app/id1037281101) All apps by Sohta Itoh: https://appshunter.io/developer/965803614 --- *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 2026-08-24.*