ClockMaster - Time Regulator icon
EDLM icon
FFT Plot icon
+8

ONYX Apps

For professional horologists, musicians, and audio engineers requiring laboratory-grade signal measurement and timing accuracy.

11apps3.6(805.4K)MusicUtilities

Snapshot

Who is ONYX Apps?

Providing professional-grade signal analysis and high-precision timing tools for horologists, musicians, and audio engineers.

Target audience

Professional horologistsMusiciansAudio engineers requiring laboratory-grade signal measurement

Top rival

Bartlomiej Swiatek

Other rivals

Portfolio

Free 3
11
apps
Music8
Utilities3

Last updated

ClockMaster - Time Regulator

vVARY

7mo ago

Active

Publisher DNA

What defines ONYX Apps?

Publisher DNA

Primary focus

High-precision audio and horological measurement utilities

Scale

indie

Target audience

Professional horologists, musicians, and audio engineers requiring laboratory-grade signal measurement and timing accuracy.

Origin

The associated entity, LoveStock JAPAN Inc., was established in May 2020 in Tokyo.

Signature Patterns

  • •Focus on high-precision signal processing and frequency analysis algorithms
  • •Targeting of professional and prosumer niches rather than mass-market consumers
  • •Hybrid monetization strategy featuring free, freemium, and premium one-time paid models
  • •Consistent focus on technical utility within the Music and Utilities categories
Active

Portfolio momentum

Maintained high development activity with 13 releases in the last 6 months across 7 active titles.

Last release 0d agoActive apps 7Abandoned 2

Company profile

medium confidence
Headquarters
Tokyo, Japan
Founded
2020

Portfolio

What does ONYX Apps ship?

Apps

11 apps analysed

ClockMaster - Time Regulator icon
ClockMaster - Time Regulator

Your simple and beautiful alarm clock for Android

3.7(765.6K)

Long-term measurement capability provides professional-grade diagnostic data

  • Integrated timer and alarm functionality provides a convenient all-in-one utility for daily time management
  • Unreliable alarm performance post-update causes missed schedules and significant user frustration regarding basic functionality

Analysis in progress

Pro-tier beat editor creates a clear value-add for power users

  • Laboratory-grade clock regulation functions as a technical barrier

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

Based on 3 of 11 apps with localized market data, more coverage rolling in as scans complete · last scanned .

Americas (1)

  • United States3 / 3

Core markets (3/3 apps)

United States

User Sentiment

How do users feel about their apps?

0

Positive apps

0

Neutral / mixed

1

Negative apps

35/100

Avg sentiment score

Rivals

Who does ONYX Apps compete with?

The rivals identified

Nemeses(3)

BetaMatters

known forAUDIIO - RTA Analyzer

1 app4.3Music

Audiio competes directly with Octave RTA by offering a free, accessible alternative for real-time audio frequency analysis, targeting the same user base of audio enthusiasts and engineers.

Mathieu Nayrolles

known forToolwatch - Watch accuracy app

1 app3.3Utilities

Both apps target mechanical watch collectors needing to monitor accuracy and service intervals. Timegrapher X uses microphone-based diagnostic hardware, while Toolwatch relies on user-reported timing data.

Nir Hamzani

known forCuckoo Clock Calibration

1 app3.7Utilities

This app directly targets the mechanical pendulum clock niche with a massive user base and high-frequency alignment with our core functionality.

Contenders(20)

Bartlomiej Swiatek

known forWatch Tuner

1 app4.8Utilities

High-velocity development cycle and strong user satisfaction indicate a serious threat in the precision timing category.

Andrew Smith

known forAudioTools, dB, Sound & Audio

2 apps4.8Music

AudioTools functions as a modular, professional-grade expansion of the core analysis features found in Octave RTA.

Appfred AS

known forClockwork - Watch App

1 app4.3Utilities

Both apps target mechanical watch owners seeking accuracy data, but they utilize different measurement methods: microphone-based acoustic analysis versus image-based time comparison.

Attila Halasz

known forOscillo: Watch Accuracy Meter

1 app4.8Utilities

Both apps target mechanical watch collectors by using the iPhone microphone to measure rate, beat error, and amplitude. Oscillo competes directly by offering these core diagnostic features for free, whereas Timegrapher X charges a 29.99 dollar entry fee.

Attila Lelko

known forTimegrapher - watch accuracy

1 app2.8Utilities

Both applications target mechanical watch owners by utilizing device microphones to measure beat rate, beat error, and amplitude for diagnostic purposes.

Jonathan Cho

known forGood Time: Set Your Watch

1 app5.0Utilities

Both apps target mechanical watch enthusiasts, but they serve distinct functional needs: Timegrapher X provides diagnostic performance analysis, while Good Time focuses on time synchronization and world clock utility.

Josef Dave Llorente

known forSpectrum Analyzer - Audio FFT

1 app0.0Music

Both apps target the same professional audio engineering and musician demographic by providing real-time frequency analysis tools via Fast Fourier Transform processing.

Louis Marion

known forPrecision Watch: Accuracy

1 app4.5Utilities

Both apps target mechanical watch owners seeking to monitor timekeeping accuracy without professional hardware, creating direct competition for the same user base.

Marcel Knop

known forSpeaker Positioning

1 app0.0Music

Both apps target the professional audio measurement market, forcing users to choose between Octave RTA's legacy FFT analysis and Speaker Positioning's modern LiDAR-assisted room mapping.

Mateus Polonini Cardoso

known forAudio RTA Analyzer

1 app5.0Music

Both apps target musicians and audio technicians with real-time spectrum analysis, creating direct competition for the same professional audio workflow. The rival captures users by offering a free entry tier and expanded testing tools that the current app lacks.

Matthias Schorer

known forRTA Pro

1 app4.5Music

Both apps target audio engineers and musicians with professional-grade real-time spectrum analysis, competing directly on the $5.99 to $9.99 price point for portable acoustic measurement.

Maxime CHEVALIER

known forTickTracer - Watch Accuracy

1 app4.3Utilities

Both apps target mechanical watch enthusiasts by providing diagnostic tools to measure watch accuracy and health. They compete directly for the same niche user base seeking to monitor timepiece performance.

MOHANRAVITEJA CHINTAMANENI

known forTickscope — Watch Accuracy

1 app4.5Utilities

Both apps target mechanical watch enthusiasts by using the phone microphone to measure watch accuracy, creating direct competition for diagnostic utility.

Naumenko Oleg

known forspectrum eye RTA

1 app4.9Music

Both apps target audio professionals with real-time frequency analysis and share an identical 9.99 dollar one-time purchase model.

New Ball s.r.o.

known forRTA Audio

1 app3.6Music

Both apps target the audio frequency analysis market, with RTA Audio providing a free, feature-rich alternative to the paid, legacy-only tool Octave RTA.

Petitpierre SA

known forONEOF Accuracy

1 app2.0Utilities

Both apps target mechanical watch enthusiasts by providing diagnostic metrics like rate accuracy and amplitude on Apple devices. They compete for the same user base seeking to monitor watch health and service intervals.

SEONYONG LEE

known forSpectrum: Audio Analyzer

1 app0.0Music

Both apps target audio engineers and musicians with real-time frequency analysis tools, competing directly for the professional mobile diagnostic market.

tyler wood

known forChronoLog • Watch Accuracy

1 app4.6Utilities

ChronoLog targets the same mechanical watch enthusiast audience by offering an audio timegrapher feature set that mirrors Timegrapher X, but with a free entry point and additional manual measurement methods.

Valeriu Moiseev

known forSpeaker Fix

1 app4.2Music

Both apps target users performing audio diagnostics, with Octave RTA focusing on professional-grade frequency analysis and Speaker Fix on consumer-level speaker testing and noise measurement.

震 任

known forClock Wave

1 app3.7Utilities

Directly competes in the niche timing software space with a similar focus on escapement analysis.

Same space(19)

SkyPaw Co.

known forDecibel X:dB Sound Level Meter

1 app4.7MusicUtilities

Shares the same 'Utilities' category and relies on high-quality microphone input processing, similar to our acoustic analysis.

Ashraf Thoppukadavil

known forDecibel Meter Sound Detector

1 app4.7Music

Decibel Meter Sound Detector competes for the same non-professional acoustic documentation segment as Octave RTA but uses a free-to-use model.

brian koech

known forSpectrum Analyzer: Audio RTA

1 app0.0Music

Spectrum Analyzer: Audio RTA provides a similar technical utility for frequency visualization as Octave RTA for audio engineers.

David McMahon

known forTimeboxd - Watch Collection

1 app5.0Utilities

This app targets the same watch enthusiast demographic by providing inventory management tools that complement the diagnostic data generated by Timegrapher X.

DEXUS Pawel Krzywdzinski

known forUltrasonic Analyzer

1 app3.9Music

Ultrasonic Analyzer extends the analysis capabilities of Octave RTA into the ultrasonic frequency range for specialized research.

Dmitriy Kharutskiy

known forSound Spectrum Analysis

1 app3.6Music

Sound Spectrum Analysis provides a similar technical feature set to Octave RTA for real-time frequency and noise level monitoring.

EA LAB

known forNIOSH Sound Level Meter

1 app4.7Music

NIOSH Sound Level Meter targets the same professional audio measurement audience as Octave RTA but relies on government-validated accuracy standards.

Free Style Dev LCC

known forMetronome Pro

1 app4.5Utilities

Adjacent sub-genre; while focused on music, it shares the core requirement of precise rhythmic timing and beat tracking.

JAVIER PUGA SORIANO

known forBMA Spectrum Analyzer

1 app0.0Music

BMA Spectrum Analyzer offers a modern, retro-styled alternative to Octave RTA for real-time frequency analysis.

Loop-Sessions

known forAudio / Spectrum Analyzer

1 app4.6Music

Audio / Spectrum Analyzer provides a similar RTA and FFT-based analysis engine to Octave RTA for audio signal inspection.

Marina Polyanskaya

known forAudio Spectrum Analyzer dB RTA

1 app4.5Music

Audio Spectrum Analyzer dB RTA overlaps with Octave RTA by providing technical diagnostic tools for audio system tuning.

MINGUK JANG

known forNoise Meter - Sound & Decibel

1 app0.0Music

Noise Meter - Sound & Decibel provides a manual calibration mechanism for the same casual noise monitoring audience as Octave RTA.

Pavel Smokotnin

known forOpen Sound Meter

1 app5.0Music

Open Sound Meter provides a comprehensive, professional-grade suite for audio system tuning that exceeds the scope of Octave RTA.

Pipi Chick Studio

known forDecibel Meter dB (Sound Meter)

1 app4.5Music

Decibel Meter dB (Sound Meter) offers a simplified, free alternative for the same environmental noise monitoring audience as Octave RTA.

Rational Acoustics

known forSmaart RTA

1 app4.8Music

Smaart RTA brings industry-standard desktop algorithms to the same mobile measurement space occupied by Octave RTA.

UniCom Technology

known forDecibel Metre (Sound Meter)

2 apps4.5Music

Decibel Metre (Sound Meter) provides a basic, free-to-use alternative for the same noise monitoring audience as Octave RTA.

Vlad Polyanskiy

known forDecibel : dB sound level meter

2 apps4.6Music

Decibel : dB sound level meter targets the same casual audio analysis audience as Octave RTA with additional consumer-facing features.

平 陈

known foriAnalyzer

1 app4.2Music

iAnalyzer serves as a long-standing professional alternative to Octave RTA for FFT-based audio signal analysis.

苏娟 陈

known forAudio Editor - Music editor

1 app4.5Music

Audio Editor provides a broader suite of post-processing tools for the same mobile-first audio audience that uses Octave RTA for analysis.

New entrants(4)

7th Gear

known forCalculator!

1 app4.4Utilities

Massive scale and recent updates show a dominant utility player capable of cross-selling into niche tools.

Andrew Thompson

known forRoom Tuner: Speaker & Room EQ

1 app0.0Music

Room Tuner differentiates itself from Octave RTA by providing actionable acoustic coaching rather than just raw measurement data.

CrioSoft

known forAmperes 4- battery charge info

1 app4.5Utilities

High release velocity in the last six months demonstrates an aggressive approach to utility market expansion.

Fotios Avgidis

known forTimegrapher — Watch Accuracy

1 app0.0Utilities

This app serves as a direct alternative for mechanical watch diagnostics by using the iPhone microphone to calculate accuracy, amplitude, and beat error.

The Analyst's Read

The bottom line on ONYX Apps

Bottom line

ONYX Apps is a specialized technical studio with a strong foothold in the precision measurement niche. Their ability to successfully monetize high-ticket professional tools alongside high-volume utilities demonstrates a disciplined prosumer strategy.

Frequently asked questions

How many apps does ONYX Apps publish?
ONYX Apps has 11 apps tracked by Marlvel, primarily in the Music category.
Where is ONYX Apps based?
ONYX Apps is based in Tokyo, Japan.
What kind of apps does ONYX Apps make?
ONYX Apps's portfolio is concentrated in Music and Utilities, with an average rating of 3.6/5 across rated apps.
What is ONYX Apps's top app?
By review volume across the portfolio, ClockMaster - Time Regulator is ONYX Apps's best-known app tracked by Marlvel.
In how many countries are ONYX Apps's apps available?
Marlvel has tracked ONYX Apps's apps across 1 country.

What fed this analysis

Apps analyzed:
10
With full intel:
1
With overview:
10
Website scraped:
yes
Social presence:
no

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 ONYX Apps, 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. “ONYX Apps intelligence.” Updated 2026-04-24. https://marlvel.ai/publishers/onyx-apps

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Data licensed under CC-BY-NC 4.0