76477 Complex Sound Synth icon
ACARS icon
Atoms To Go Table of Elements icon
+25

Black Cat Systems

For amateur radio operators (Ham), shortwave listeners, and audio technicians requiring portable signal decoding and sound management tools.

Known forMorse Mania
28apps3.8(36.1K) Multi-theme

Snapshot

Who is Black Cat Systems?

Providing specialized signal processing utilities and educational tools for amateur radio enthusiasts and audio professionals.

Target audience

Amateur radio operators (Ham)Shortwave listenersAudio technicians requiring portable signal decoding

Active nemesis

Electronial

Other rivals

Portfolio

Free 2
28
apps
Lifestyle8
Reference7
Utilities7
Music3

Last updated

Morse Mania

v9.5.0

1.1y ago

Steady

Publisher DNA

What defines Black Cat Systems?

Publisher DNA

Primary focus

Radio frequency utilities and technical education

Scale

studio

Target audience

Amateur radio operators (Ham), shortwave listeners, and audio technicians requiring portable signal decoding and sound management tools.

Origin

Originally a developer of cross-platform software for Windows and Macintosh, the publisher expanded their technical utility suite to mobile platforms.

Signature Patterns

  • •Deep focus on signal processing and radio frequency (RF) calculation utilities.
  • •Monetization strategy favors one-time paid purchases for specialized professional tools.
  • •Functional, utility-first UI design consistent with their cross-platform desktop heritage.
  • •Targeting highly specific technical subcultures with high-intent user bases.
Steady

Portfolio momentum

Maintained a consistent update cycle with 4 releases in the last 6 months, primarily focused on sustaining their core technical utility suite.

Last release 13d agoActive apps 11Abandoned 13

Portfolio

What does Black Cat Systems ship?

Apps

28 apps analysed

ACARS icon
ACARS

Earn money renting your private car or rent the car of your dreams.

3.3(12)

User-expandable aircraft database increases long-term utility for dedicated hobbyists.

  • Specialized radio-decoding utility creates a defensible niche against general-purpose flight trackers.

One-time purchase model removes recurring subscription friction for long-term users.

  • Nuclear isotope database establishes technical authority in the reference category.
Audio Spectrum Analyzer icon
Audio Spectrum Analyzer

Sound Spectrum Analyzer wit RTA SPL (Noise Level) Sound Frequency spectrum maker

3.9(52)
dB Calc icon
dB Calc

Translate ratios to decibel and back.

5.0(5)

Single-market publisher, every app ships only to United States.

Based on 5 of 28 apps with localized market data, more coverage rolling in as scans complete · last scanned .

Americas (1)

  • United States5 / 5

Core markets (5/5 apps)

United States

User Sentiment

How do users feel about their apps?

0

Positive apps

1

Neutral / mixed

0

Negative apps

45/100

Avg sentiment score

Rivals

Who does Black Cat Systems compete with?

The rivals identified

Nemeses(2)

Electronial

known forAmateur Radio Toolkit

1 app4.0Lifestyle

Both apps target the same ham radio hobbyist audience, competing for utility space on mobile devices through specialized field tools.

Vlad Polyanskiy

known fordB Meter & Spectrum Analyzer

3 apps4.7Utilities

Both applications target users requiring sound pressure level and frequency analysis, competing directly for the same diagnostic utility market segment.

Contenders(17)

BetaMatters

known forAUDIIO - RTA Analyzer

1 app4.3Utilities

Both apps target audio technicians and hobbyists through real-time frequency analysis, creating direct competition for users seeking acoustic measurement tools.

BioRust Studios

known forHam Radio US Band Plan

1 appLifestyle

Both apps target the ham radio community, though they serve distinct operational needs: DX Toolbox focuses on signal propagation analysis, while Ham Radio US Band Plan focuses on regulatory compliance and band privileges.

Brian Mathews

known forSOTAMĀT SOTA / POTA Spotting

2 apps3.5Lifestyle

Both apps target the amateur radio operator demographic, specifically those requiring specialized tools for signal management and field operations.

DX Development

known forDxQSO

1 app5.0Lifestyle

Both apps target the amateur radio operator audience, creating competition for screen time and utility spend within the hobbyist segment.

Great Maps

known forHF Pilot (Ham Radio/Shortwave)

1 app0.0Lifestyle

Both apps target the amateur radio community with propagation forecasting tools, creating direct competition for users seeking signal condition estimates.

Hajime Matsumoto

known forNAMILIUM – Spectrum Analyzer

1 app5.0Utilities

Both applications target audio professionals and technicians by providing real-time frequency analysis and sound pressure level metering tools.

Jared Grover

known forPitch Hunter

1 app3.0Utilities

Both apps target users performing frequency analysis, but Pitch Hunter focuses on identifying specific high-frequency noise sources while Audio Spectrum Analyzer provides professional diagnostic tools for acoustic measurement.

Joseph Iannazzone

known forQRV - Ham Radio Multitool

1 app4.9Lifestyle

Both apps target amateur radio operators with propagation forecasting and signal analysis tools, creating direct competition for the same user base.

Kyu-Hee Jang

known forSpectrum Analyzer+ FFT

1 app2.3Utilities

Both apps target audio professionals and hobbyists with real-time frequency analysis tools, creating direct competition for users seeking portable acoustic measurement solutions.

Matthew Miller

known forSolar Data & Propagation

1 app3.0Lifestyle

Both apps target ham radio operators and shortwave listeners by providing real-time propagation forecasting and solar condition data.

New Ball s.r.o.

known forRTA Audio

1 app3.6Utilities

Both applications target the audio frequency analysis market, competing for users requiring real-time Fast Fourier Transform and acoustic measurement tools.

Nuno Facha

known forHam Radio Toolbox

1 app4.8Lifestyle

Both applications target amateur radio operators with propagation forecasting and signal analysis tools, creating direct competition for the same user base.

Robert Sillett

known forSWLog

1 app2.3Lifestyle

Both apps target the amateur radio and shortwave listener audience, with SWLog competing for the same user base by providing logging tools that complement the propagation forecasting found in DX Toolbox.

SEONYONG LEE

known forSpectrum: Audio Analyzer

1 app0.0Utilities

Both apps target audio engineers and professionals with real-time FFT analysis, creating direct competition for mobile diagnostic tasks.

Thomas Lindner, DL2RUM

known forRUMlogNG2Go

1 app4.7Lifestyle

Both applications target the same amateur radio operator audience, competing for limited mobile screen time through specialized field tools.

TOON

known forAudio Frequency Analyzer

1 app3.7Utilities

Both apps target audio professionals and hobbyists with frequency analysis and calibration tools, competing directly for the same diagnostic utility market.

Vladyslav Haliuk

known forMagicSDR: SDR Radio Receiver

2 apps3.1Lifestyle

Both apps target the ham radio and shortwave listener community, though DX Toolbox focuses on propagation forecasting while MagicSDR provides remote access to live SDR hardware.

Same space(36)

Anna Koynova

known fordB meter lite - noise measure

1 app4.6Utilities

It serves the same casual monitoring audience by offering a simplified, calibrated noise-tracking experience.

Ashraf Thoppukadavil

known forDecibel Meter Sound Detector

1 app4.7Utilities

It targets the same non-professional environmental noise documentation segment but lacks the monetization gates found in more mature utilities.

Aviator Assistant

known forWeather Scope NOAA Live Radar

1 app4.5Weather

Weather Scope provides real-time storm tracking and radar imagery that serves as a visual supplement to HF radiofax charts.

BoatUS

known forBoatUS - Boat Weather & Tides

1 app4.8Weather

BoatUS integrates marine weather forecasts with on-water towing assistance, providing a safety-focused utility for boaters.

C. Ray Carroll

known forSolar Compass Pro

1 app5.0Lifestyle

Offers solar positioning tools that overlap with the solar condition data used for propagation forecasting.

Dave Pascoe

known forLiveATC Air Radio

1 app3.6Lifestyle

This app targets the same aviation enthusiast audience as ACARS but shifts the focus from raw signal decoding to a global network of live audio feeds.

David Bannach

known forDecibels: dB Sound Level Meter

1 app4.6Utilities

This app serves the same casual noise-monitoring audience by focusing on visual documentation and photo-based reporting.

Dmitriy Kharutskiy

known forSound Spectrum Analysis

2 apps3.8Utilities

It provides a similar technical analysis suite for the same professional audience, focusing on high-resolution FFT settings.

EA LAB

known forNIOSH Sound Level Meter

1 app4.7Utilities

It competes for the same professional safety audience by leveraging government-validated accuracy standards to build trust.

ExaMobile S.A.

known forVibration Meter, seismograph

1 app4.2Utilities

It targets a similar technical monitoring audience by using device sensors to track physical vibrations instead of sound.

Iryna Ivanko

known forSkyRadar Flight Tracker Plane

1 app5.0Lifestyle

This app targets the broader aviation tracking market by providing real-time flight status and augmented reality features that complement the raw data focus of ACARS.

Kaan Yaren

known forPOTAontheGO - POTA Ham Radio

2 apps2.0Lifestyle

Targets the same portable radio operators by providing real-time spotting and logging for POTA activations.

Kristopher Linquist

known forOffline Spotter for POTA/SOTA

1 app4.2Lifestyle

Supports the same portable radio operating community by enabling spotting messages without cellular coverage.

Lucija Jaksic

known forFrequency: Sound Generator

1 app4.7Utilities

It shares the same audio-professional audience but focuses on signal generation rather than analysis to assist in hardware maintenance.

Lukasz Skierkowski

known forDigiDecoder: Ham Radio

1 app4.4Lifestyle

Extends the radio hobbyist toolkit by providing signal decoding capabilities for digital modes.

Manfred Kuegel

known forFrequency Analyzer

1 app4.5Utilities

It provides a more advanced suite for the same professional audience by utilizing 32-bit float processing.

Marina Polyanskaya

known forAudio spectrum analyzer EQ Rta

2 apps4.5Utilities

It targets the same professional audio engineering segment but faces similar performance instability on newer device software.

MaxSaur

known forSolar Energy Forecast

1 app4.9Lifestyle

Provides solar condition data relevant to radio propagation, though it focuses on energy generation potential.

md

known forSWListener - radio scanner

1 app1.3Lifestyle

Targets the same shortwave radio hobbyists but focuses on broadcast schedules instead of signal propagation forecasting.

METEO CONSULT

known forMétéo Marine

1 app3.0Weather

Météo Marine supplies localized marine forecasts and tide data for coastal and inland water activities as a regional planning companion.

ONYX Apps

known forSpectrum Analyzer RTA

1 app4.3Utilities

This app serves the same professional engineering audience with a premium, high-precision toolset for room tuning.

OV MEDIA

known forDecibel Meter: Sound dB

1 app4.3Utilities

This app targets the same casual user base by focusing on timestamped noise history and tracking.

PredictWind

known forPredictWind - Marine Forecasts

1 app4.7Weather

PredictWind offers proprietary marine weather models that serve as a digital alternative to traditional radiofax charts for offshore navigation.

Shenzhen Yiken Technology Co.

known fordB Decibel Meter - Noise Level

1 app4.5Utilities

It targets the same general-purpose monitoring audience by focusing on A-weighting for human-perception accuracy.

SkyPaw Co.

known forDecibel X:dB Sound Level Meter

1 app4.7Utilities

This app serves the same acoustic measurement audience but captures higher volume by integrating with Apple Health and Watch for continuous monitoring.

SOFT4SAIL

known forNavimetriX - Weather routing

1 app0.0Weather

NavimetriX offers navigation and weather routing capabilities that integrate with marine charts for offshore passage planning.

Steve Urrego

known forWeather Forecast

1 app4.8Weather

Weather Forecast provides general meteorological data that complements specialized marine tools for users needing broader atmospheric context.

Sue Southcott

known forParks & Peaks

1 app5.0Lifestyle

Serves the same portable radio community by tracking SOTA and WWFF activities in specific regions.

Synergenics

known forEchoLink

1 app4.0Lifestyle

Connects the same licensed amateur radio operators to a global communication network via VoIP.

Thomas Gruber

known forAudio Function Generator

1 app4.7Utilities

This app complements the analysis workflow by providing the signal generation tools needed to test audio systems.

Ultrafine

known forDecibel dB Sound Meter Ultra

1 app4.6Utilities

It serves the same professional acoustic analysis market by offering report generation capabilities for documentation.

UniCom Technology

known forSound Meter (Decibel)

1 app4.5Utilities

This app acts as an auxiliary tool for the same casual noise-monitoring audience by focusing on statistical tracking.

Windfinder

known forWindfinder: Wind & Weather map

1 app4.7Weather

Users report: Windfinder provides high-resolution regional weather models that sailors use to supplement the offline data captured by HF radio.

World Radio League

known forHam Radio Prep

1 app4.8Lifestyle

Serves the same amateur radio audience by providing certification training rather than signal propagation analysis.

Yousif AL Balushi

known forHam Logging

1 app0.0Lifestyle

Complements the propagation forecasting of DX Toolbox by providing a centralized logging system for radio contacts.

Yuri Wolf

known forMorseKeyer

1 app0.0Lifestyle

Targets the same amateur radio operators by providing a digital tool for Morse code transmission.

New entrants(2)

brian koech

known forSpectrum Analyzer: Audio RTA

1 app0.0Utilities

It serves the same professional audio audience by focusing on live frequency visualization and transient identification.

MINGUK JANG

known forNoise Meter - Sound & Decibel

1 app0.0Utilities

This app targets the same casual audience by providing a manual calibration tool to improve reference accuracy.

The Analyst's Read

The bottom line on Black Cat Systems

Bottom line

Black Cat Systems is a disciplined niche publisher that successfully dominates the amateur radio utility category. Their transition from technical calculators to high-performing educational tools like Morse Mania indicates a strong understanding of their core user's learning journey.

Frequently asked questions

How many apps does Black Cat Systems publish?
Black Cat Systems has 28 apps tracked by Marlvel, primarily in the Lifestyle category.
What kind of apps does Black Cat Systems make?
Black Cat Systems's portfolio is concentrated in Lifestyle and Reference, with an average rating of 3.8/5 across rated apps.
What is Black Cat Systems's top app?
By review volume across the portfolio, Morse Mania is Black Cat Systems's best-known app tracked by Marlvel.
In how many countries are Black Cat Systems's apps available?
Marlvel has tracked Black Cat Systems's apps across 1 country.

What fed this analysis

Apps analyzed:
28
With full intel:
2
With overview:
28
Website scraped:
yes
Social presence:
yes

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Black Cat Systems, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Black Cat Systems intelligence.” Updated 2026-04-24. https://marlvel.ai/publishers/black-cat-systems

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Data licensed under CC-BY-NC 4.0