Provides country codes with 2-letter (alpha-2), 3-letter (alpha-3), and 3-digit numeric formats. Allows sorting by country name, alpha-2, alpha-3, or numeric. Optionally displays country names in French.
by Edwin Hou★ 5.01 ratingsReferenceFreeData updated 2026-09-08
Learn country names and locations in through interactive bubble-popping gameplay. Match capitals to by popping bubbles. Track progress and compete in Apple Game Center. Choose from multiple languages for personalized learning.
The app calculates the biologically effective dose (BED) for radiation therapy fractionation regimens. It computes BED for external beam radiation therapy and brachytherapy treatments based on dose per fraction and dose rate.
Alphabets in seven languages with illustrated letters and pronunciation guides. Practice with learning mode and a knowledge test game. Includes images, example words, and native audio for each letter.
Find full addresses, zip codes, and location details by selecting points on a map. Retrieve latitude, longitude, time zone, and local time. Access raw data from a database.
Guess by their outline across all continents. Identify 197 independent nations in two difficulty levels. Compare country shapes to distinguish similar ones. Track progress and collect stars as you advance.
Research and analyze and numerology with text input options for single lines or paragraphs. View multiple cipher values simultaneously. Explore detailed cipher breakdowns including letter and word values, total values, and alternate letter values.
This reference app provides quick access to amateur radio band limits, country codes, band plans, radiogram messages, grid squares, and time. It also includes the RST system, Morse code, phonetic alphabet, unit abbreviations, and metric prefixes.
Test geography knowledge with quizzes on , , and country shapes. Select from various question types including flag identification, capital recognition, and map shape matching. Track progress and challenge global knowledge.
View population growth projections for all countries under various scenarios. Track current and future overshoot levels. Explore sustainable population limits. Access country-specific solutions to . Compare demographic trends and resource impacts.
The app teaches uppercase letter recognition with animated flashcards. It features all 26 uppercase letters of the alphabet, with big letters for tapping.
Teaches letter sounds through four interactive games. Users identify letters with sounds, match letters to words, and play memory games. Tracks progress and provides feedback after each activity.
Displays device details including disk capacity, network IP addresses, cellular carrier data, CPU usage, and RAM statistics. Users can view hardware specifications, storage usage, and performance metrics.
Learn through interactive map games and multiple choice quizzes. Identify countries, U.S. states, flags, and capitals by tapping map regions or answering questions. Challenge friends or practice alone.