3 Letter Quiz app for iPhone and iPad

"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.