V
Vocalis Studio
App Store

Understand your voice
through data.

Record along with scale playback and visualize pitch in real-time. A simple practice tool for voice training.

iOS 15.0+ Multi-language StoreKit 2
Home screen

Features

Recording with Scale

Auto-play scales and record your voice. Countdown leads seamlessly into practice.

Recording standby

Real-time Analysis

Spectrum and pitch indicator visualize volume and pitch changes instantly. Cent deviation display supported.

Recording in progress

Flexible Settings

Adjust scale type, starting pitch, tempo, progression pattern, and ascending/descending cycles.

Scale settings

SCREENSHOTS

Practice flow, reflected in UI.

Recording → List → Analysis — intuitive navigation throughout.

Recording List

Auto-organized with date, key, and scale info. Select to play or analyze instantly.

Recording list Recording list playback

Recording Analysis

Spectrogram and pitch graph show the difference between target scale and detected pitch.

Analysis Analysis playback

Plans

Free

$0

  • ✓ Basic recording
  • ✓ Real-time pitch detection
  • ✓ 5-note scale playback
  • × 5 recordings/day, max 30 sec
Recommended

Premium

$4.99/mo

  • ✓ Everything in Free
  • Unlimited recordings
  • Up to 5 minutes per recording

Auto-renewable subscription. Cancel anytime.

SPEC

Technical Specifications

Requirements

  • ・iOS 15.0 or later
  • ・Language: Swift 5.9+
  • ・UI: SwiftUI

Audio

  • ・Recording: M4A (AAC), 44.1kHz, Mono
  • ・Analysis: AVFoundation FFT

Other

  • ・Multi-language support
  • ・StoreKit 2 subscription management