SonicShift: Music Tempo & Key is a music app developed by Waffle, LCC.
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App Information
SonicShift: Music Tempo & Key is freely available from the App Store. The app size is 45.47 MB. The latest version available is 1.0.3. The last update was on March 30, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since March 2026.
Description by Waffle, LCC(from the App Store)
Change the key and speed of any song — independently and in real time.
SonicShift lets you adjust pitch and playback speed of your music files with precision. Whether you're a musician learning a solo in a different key, warming up for karaoke, or slowing down audio for language study — SonicShift gives you full control.
KEY FEATURES
▸ Pitch Control: -12 to +12 semitones (full octave up or down) in 0.1 semitone steps ▸ Speed Control: 0.5x to 2.0x playback speed in 0.01x steps ▸ Independent Adjustment: Change pitch without affecting speed, and vice versa ▸ Real-Time Waveform: Live FFT frequency visualization while playing ▸ Quick Presets: 7 built-in presets for common use cases ▸ Haptic Feedback: Feel the controls respond as you dial in your sound ▸ Multiple Formats: MP3, WAV, M4A, FLAC, OGG supported ▸ Recent Files: Quick access to your last 20 opened files
PERFECT FOR
▸ Musicians — Practice songs in any key. Slow down fast passages. Learn guitar solos at half speed, then gradually increase tempo. ▸ Karaoke — Shift the key to match your vocal range. Presets included for common key changes (+3, -3 semitones). ▸ Language Learners — Slow down podcasts, audiobooks, or conversation recordings to catch every word. ▸ Drummers & Percussionists — Speed up or slow down tracks to practice timing at your own pace. ▸ Music Teachers — Demonstrate songs in different keys for students with different vocal ranges.
HOW IT WORKS
1. Open any audio file from your device 2. Adjust the pitch slider to change the key 3. Adjust the speed slider to change the tempo 4. Tap a preset for instant common adjustments 5. Hit play and practice
PRESETS INCLUDED
• Half Step Down / Up (-1 / +1 semitone) • Whole Step Down (-2 semitones) • Slow Practice (0.75x speed) • Very Slow (0.5x speed) • Karaoke -3 / +3 (±3 semitones)
SonicShift uses advanced audio processing with pitch correction, so changing the key doesn't make vocals sound chipmunk-like, and slowing down doesn't distort the audio.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
