Best RF alternatives: apps like RF-CALC

10+ similar apps compared and reviewed

4.3 avg rating

7 free apps

Updated November 2026

Julien Geissbuehler

Whether you want more options like RF or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.

Top Alternatives to RF

#1

Numberie Keyboard by Ratha Sou

Access all numbers in 5th row

Editor's Choice

3.7(3 ratings)

$0.99

Numberie Keyboard screenshot 1

Numberie Keyboard screenshot 2

Numberie Keyboard screenshot 3

Numberie Keyboard screenshot 4

Numberie Keyboard screenshot 5

Numberie Keyboard screenshot 6

This keyboard app provides a dedicated number row on the top of your iPhone or iPad keyboard for faster and easier number input. It offers customizable themes, intelligent word suggestions, and quick access to symbols.

#2

HamHamHam by Andrea Biancat

Tools for Ham Radio Operator

Strong Contender

5.0(1 ratings)

Free

HamHamHam screenshot 1

HamHamHam screenshot 2

HamHamHam screenshot 3

HamHamHam screenshot 4

HamHamHam screenshot 5

HamHamHam screenshot 6

Learn and practice Morse code with progress tracking and configurable speed settings. Log your radio contacts (QSOs) and export them in ADIF format.

#3

RST Scope by koji kamogawa

Spectrum&WaterFall Display App

Worth Considering

5.0(1 ratings)

FreeAds

RST Scope screenshot 1

RST Scope screenshot 2

RST Scope screenshot 3

This utility app provides spectrum scope and waterfall displays for amateur radio operators. It enhances radios lacking these features by analyzing microphone input, allowing for clear distinction of Morse code and detailed audio frequency visualization.

More apps like RF

Great pricing, great value.

Compare with RF

Tools for HAM-Radio Operators

This utility app offers a comprehensive suite of tools for amateur radio operators, including band conditions, DX-Cluster monitoring, and a logbook. It features direct radio integration for tuning and automatic logging, along with various calculations and resource information.

DX-Cluster and PSK-Reporter activity monitoringBandplan, Glossar, and AWG resource informationBuilt-in radio integration for direct tuning

Compare with RF

programmable calculator

This app offers a programmable calculator with two distinct modes for daily computing and advanced mathematical functions. It supports system conversions between binary, octal, decimal, and hexadecimal, and allows for variable storage and code sharing.

Basic and advanced calculation modesSyntax parserVariable storage and editing

Compare with RF

Calculate and see the history

A fast and elegant calculator for Apple devices that displays your calculation history. It offers a Today Extension for quick access and supports Apple Watch, external keyboards, and VoiceOver.

Calculation history displayToday Extension for quick calculationsApple Watch app

Compare with RF

Packet Commander

Packet Commander

Packet Commander

Terminal for Packet Radio

This app provides a classic terminal experience for packet radio communication on mobile devices. It offers powerful terminal features, smart connection management, and real-time over-the-air traffic monitoring. It's designed for amateur radio operators to connect with nodes, BBS, and decode traffic.

Full-screen terminal for packet nodes and BBSClassic color themes and adjustable layoutYAPP protocol support for file transfers

free with in-app purchases

Compare with RF

POTAontheGO - POTA Ham Radio

POTAontheGO - POTA Ham Radio

POTAontheGO - POTA Ham Radio

Parks on the Air Tool & Logger

This app helps ham radio operators find, spot, and log Parks on the Air activations. It offers interactive maps, live spotting, and quick logging for portable operations.

Interactive park mapsLive spotting of operatorsQuick QSO logging

free with in-app purchases

Compare with RF

Date and Time Calculator Pro

Date and Time Calculator Pro

Date and Time Calculator Pro

Calculate the precise time difference between any two dates and times, down to the second. Easily determine future or past dates based on a specified duration. Ideal for tracking events, financial periods, or personal milestones.

Calculate time distance between datesCalculate days after a specific dateCalculate date before a specific date

Compare with RF