Pitch Tempo Changer

[ ALL FEATURES FREE & NO FULL-SCREEN ADS FOR BASIC USE ]
- Basic Features (Pitch & Tempo): Completely FREE. NO full-screen ads are shown during these standard operations.
- Advanced Options: All extra features are also FREE to use. (Full-screen ads may appear only when accessing these advanced options).
- Ad-Free Option: Remove all ads permanently for a very small, one-time fee (less than the price of a simple snack!).

This app allows you to load audio data (WAV/MP3) and play or save it (in MP3 format) while independently adjusting the pitch and tempo and formant.
Equipped with a playback marking, repeat feature, it is the perfect tool for transcribing music by ear or practicing English listening.

User Guide:
https://docs.google.com/presentation/d/1-CiSm_HoQ2uj7i5kC6GYXp-t2trgR2VpggGeFxr0b3Q/preview

● Our Commitment to Audio Quality
Note: Supports wide adjustment range (25%–400% tempo / ±1 octave pitch). Due to the nature of digital audio, extreme settings may result in artifacts. You can often mitigate these by adjusting the ”High Quality Mode” in the options menu.

1.Automatic Frequency Compensation: Traditional shifters often suffer from weak bass when pitch is raised or weak treble when lowered. This app automatically compensates for these bands, mitigating these issues.

2.Attack Clarity Enhancement: an option to suppress the "doubling" effect often heard in the attack of drums and percussion when raising the pitch or slowing down the tempo.

3.Flexible Export Settings: When saving as an MP3, you can select the bit rate (96–320 kbps). This allows you to find the perfect balance between storage space and audio quality.

4.Formant Shift: Enjoy voice-changing capabilities! By adjusting the intensity, you can achieve natural-sounding formant shifts tailored to your preference.
- Advanced Formant Shift & Voice Texture (Updated April 2026):
Our new C++ engine provides natural-sounding voice transformation.
- Voice Texture (Cepstral): Adjust the resolution of the voice. Use higher values for rich ensembles or lower values to eliminate "double-voice" artifacts and noise in solo vocals.
- Auto-Optimization: The "Auto" button calculates the ideal texture for your current settings instantly.

5.Vocal Extraction & Removal: Features a center-cancel function to extract or remove vocals. (Note: Does not apply to tracks where vocals are panned to the left or right.)

6.Track Decomposition: Analyze audio to identify and isolate sounds based on their stereo positioning (panning). (Note: Precision depends heavily on original audio quality.)

7. Micro-Pitch, Micro-Formant(Apr. 2026): Precision pitch / formant shifting in 5-cent increments (1/20th of a semitone).
This allows for professional-grade fine-tuning:
- Correcting pitch drifts in digitized vinyl records or old tape recordings.
- Fine-tuning instruments without losing audio character.
- Subtle correct to voice

8. High-Quality Mode: a high-quality mode using Phase Vocoder. This mode allows for clearer changes than ever before, while maintaining the richness of the sound. (Requires more processing time).

9. Spot Pitch Correction: Select specific areas of the waveform and apply pitch correction only to those spots.
Video Guide: https://youtube.com/shorts/I1BFM18fjDw

10. Practice Session Save (April, 2026): Save your perfect practice settings as presets! You can now bookmark specific playback ranges (loop points) and store your custom adjustments for each song.

Professional processing made easy without a DAW.

[ PRIVACY & PERFORMANCE ]
All processing is performed 100% locally on your device. No data is sent to servers, ensuring total privacy. (Note: Processing speed depends on your device's hardware specs.)

[ COMMUNITY ]
Special thanks to Mostafiz for the beautiful app icon!

[AD-FREE OPTION]
For those who want to work without ads and concentrate, we offer an option to permanently remove all ads for a small one-time purchase. (Please check the local price on the purchase screen.)