Published application

PerfectTone

iPhone · Music

A lightweight tuner and metronome with real-time pitch detection, visual tuning guidance, concert-pitch adjustment, note-spelling options, and on-device audio processing.

PerfectTone application icon

What it is

PerfectTone

A lightweight tuner and metronome with real-time pitch detection, visual tuning guidance, concert-pitch adjustment, note-spelling options, and on-device audio processing.

Problem / need

The operational or technical need

Provide a focused tuning and timing tool with responsive real-time pitch feedback and practical control over concert pitch and note spelling.

Solution

How the project addresses it

PerfectTone combines a tuner and metronome in a lightweight iPhone application using on-device audio processing and a real-time visual interface.

Key capabilities

What the project includes

  • Real-time pitch detection
  • Visual tuning guidance
  • Metronome
  • Concert-pitch adjustment
  • Note-spelling options
  • On-device audio processing

My role

Product, systems, integration, and delivery ownership

I defined the application requirements and behavior, directed product decisions, integrated and evaluated implementation work, tested audio and UI behavior, investigated performance and accuracy issues, and delivered updates through the App Store.

Technologies / methods

Tools and approaches used

  • Swift
  • Xcode
  • Audio / pitch detection
  • Real-time UI
  • On-device processing
  • Performance tuning
  • App Store publishing

Development process

AI-assisted, critically evaluated, and tested

Development uses ChatGPT and Codex as engineering accelerators for implementation, code review, debugging, test design, performance investigation, and documentation. I validate behavior on the actual application, diagnose problems, iterate on the solution, and remain responsible for the delivered product.

Result

Published and available

Published on Apple’s App Store. Subsequent updates improved accuracy, responsiveness, performance, and stability.

View on the App Store

Product screenshots

Application screenshots

Screenshots are being prepared for this case study.

Screenshot coming soon for PerfectTone
Screenshot coming soon
Screenshot coming soon for PerfectTone
Screenshot coming soon
Screenshot coming soon for PerfectTone
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