Amateur radio reference for all users.
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.
Showing 21–40 of 1,000 ranked alternatives.
Kazunori Watanabe
Calculate GL reference easily anywhere.
The app calculates a 10-digit GL reference for amateur radio operators using iPhone GPS. It does not require an internet connection and shows the user's current location's GL reference, including 4, 6, or 10-digit options.
Patrick J Maloney LLC
Practice amateur radio license exam questions.
The app provides practice questions and exams for the Technician class amateur radio license. It identifies areas needing further practice and allows users to review FCC rule text.
Nelcea
Audio conversion tools for professionals and enthusiasts.
This application provides audio conversion tools for professionals and enthusiasts. It includes converters for frequency, period, wavelength, band, delay, volume, and room modal response calculations.
Adafruit Industries LLC
Calculate component values and resistor codes
Calculate component values for Op Amp, 555, RC Filter, and Resistor Divider circuits. Decode resistor and capacitor codes. Compute power, resistance, current, and voltage using Ohm's Law and Power Calculators.
Hipposoft, LLC
Edit lab , create categories, and terms
Access , abbreviations, and prefixes/suffixes. Edit or add lab , create custom categories, and organize panels. Search across 16 categories with hundreds of entries. Export data and manage personal lab information.
Roy Watson
Pass the Extra Class Radio License
The app helps users prepare for the Extra Class FCC Amateur Radio License exam. It offers question review, topic quizzes, and simulated exams to track progress.
Soft Dorothy LLC
Electronics hobbyist utility and reference tool.
The app provides a reference and utility for electronics hobbyists. It includes calculators for resistors and capacitors, along with tools for L.E.D.s and Ohm's law.
Technimo LLC
Practice with a real-sounding band
Practice music with a simulated band that provides real-time accompaniment. Create and save chord charts for favorite songs. Track progress with built-in exercises and feedback. Sync with Apple Health to log practice sessions.
InQuisiTiVe Media Limited
Words, solve puzzles, win challenges
Solve puzzles by connecting related words in a 16-square grid. Group four words into connected sets. Complete four groupings to finish a round. Progress through eight rounds to advance.
Brian Enigma
Solve puzzles, track clues, decode codes
Access codebreaking tools like decoder rings and countdown timers. View reference material on word frequency, morse code, and semaphore. Includes links to hunts, ARGs, and transmedia storytelling resources. Supports iOS 7.
Electronial
Calculate formulas and values
Perform calculations using built-in formulas and calculators for displacement, acceleration, Newton's second law, gravitational acceleration, Hooke's law, momentum, work, density, kinetic energy, potential energy, elastic energy, electric power,
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.