音樂變調器 - Key Shifter

🎵 Key Shifter

A professional-grade audio key shifting tool, processed entirely locally to protect your privacy.

Easily adjust the key of music whether you're practicing singing, composing, or learning an instrument.

✨ Main Functions

【Instant Pitch Shifting】

- Precise adjustment up and down by ±12 semitones (± one octave)

- One-click pitch shifting, hear the change instantly

- Visual semitone indicator clearly displays the current pitch

【High-Quality Export】

- Supports lossless WAV export - preserves original sound quality, suitable for professional use

- Supports compressed MP3 export - small file size, easy to share

- Automatically names files (original filename_key + pitch)

【Wide Format Support】

- Full support: MP3, WAV, AAC, M4A

- Compatible with most devices: FLAC, OGG

- Direct processing without conversion

【Completely Offline Processing】

- All pitch shifting calculations are completed locally on your phone

- No internet required, no file uploads

- 100% privacy guaranteed

🎯 Who is it suitable for?

🎤 KTV For singers: Can't find an accompaniment that suits your vocal range? Raise or lower a few semitones and easily hit higher notes!

🎸 For music creators: Listen to arrangements in different keys to find the most suitable version.

🎹 For instrument learners: Tune your practice pieces to the key of your instrument for better results.

🎧 For music lovers: Simply curious about the feeling of a song going higher or lower? Just play around with it and you'll get a feel for it.


💡 Why Choose Key Shifter?

✓ Simple Interface - No learning curve, just open and use!

✓ Fast Processing - 5-minute songs completed in under 30 seconds

✓ Superior Sound Quality - Utilizes industry-standard pitch shifting algorithms

✓ Privacy First - No personal data collection

✓ Small Size - Minimal storage space

🔒 Privacy Commitment

This application promises:

- No collection of personal data such as name, phone number, or email

- No access to your contacts or photo album

- No uploading of your audio files to any server

- All calculations are performed locally on your device

For a detailed privacy policy, please refer to the link within the application.

📱 System Requirements

- Android 7.0 or higher

- 2GB or more RAM recommended

- Approximately 50MB storage space

💬 About the Developer

Qina Music is dedicated to creating lightweight, user-friendly, and privacy-focused tools for music creators.

⚠️ Important Notes

- The pitch-changing process requires loading the entire song into memory. Long audio files (over 30 minutes) may cause your phone to lag.

- WAV files are large; we recommend exporting to MP3 to save space.

- FLAC and OGG compatibility depends on your device. If you cannot open them, please use MP3 or WAV instead.

- This application contains ads; ad revenue will support continued development.

Thank you for downloading! Enjoy using it! 🎶