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 destinations, match locations, test knowledge
Learn geography by identifying Air France/KLM and Transavia destinations on a map. Test knowledge with quizzes and match destinations to their three-letter codes. Use flip cards to memorize codes and locations.
Explore Unicode characters through Block, Plane, Grapheme, and Character views. Inspect detailed properties, search by code point or name, and segregate characters into code points.
The app generates random 5-letter words for Morse Code practice. It sends these words using the iPhone speaker and allows users to set WPM, dot speed, and tone frequency.
The app allows users to search for logos using keywords, shape, country, characters, and visual elements. It includes newly added logos and supports Chinese and English keyword matching with an improved interface.
Search journals by keyword, ISSN, or subject. View detailed information including ISSN, subject category, and country of publication. Access yearly impact factors from 2000 to up to 22 years. Save screenshots for sharing via social media or email.
Steel pipe specifications and industry calculators.
The app provides common steel pipe specifications and industry conversion calculators. It displays pipe charts with wall thickness and weight per foot for various pipe sizes and schedules, along with information for oil country and tubular products.
Measure magnetic field strength in microtesla units across x, y, and z axes. Display total magnetic field magnitude. Detect Earth's magnetic field and identify permanent magnets or electromagnetic fields.
The app helps children learn the alphabet, including letter names, sounds, and formation. It offers interactive activities and rewards to build alphabet knowledge and handwriting skills for both upper and lower case letters.
Find classroom locations by entering room numbers. View building names and floor details. Navigate using two routing options. Get step-by-step directions within the .