Instantly adjust the pitch, tempo, and formant of your favorite tracks—all at once, all in real time—with Pitch Tempo Changer Flash, the lightweight and ultra-fast version of our popular audio and voice changer tool!
Most pitch/tempo apps treat voice character as an afterthought. Flash puts formant control right alongside pitch and tempo—three sliders, all live, all instant, so you can transpose the key, change the tempo, and reshape the voice all at once.
Designed for music lovers, dancers, musicians, and anyone who wants to hear their songs in a new way, this app strips away the wait so you can practice, play, and listen without interruption.

Key Features:
- Three Sliders, One Instant Sound: Pitch, tempo, and formant—move any of them mid-playback and hear the change immediately. Great for key changes, or bringing a pitched-up vocal back to its natural voice.
- Zero Waiting Time: No waiting for files to convert. The "Flash" engine loads your tracks instantly, so you can slow down a solo or speed up a warm-up without breaking your flow.
- Make Any Song Sound Cute (or Deep, or Totally Different): Turn up the formant for a lighter, cuter voice—or push it down for something deeper and darker. A fun new way to enjoy the music you love, remix a vocal for karaoke night, or just mess around.
- Multiple Setlists & Playlists: Create and manage custom playlists! Organize your tracks for driving, relaxing, transcription, karaoke, or intense woodshedding sessions.
- Background Playback: Keeps playing smoothly in the background, even alongside other music/radio apps. Note: if another app plays audio at the same time, lock-screen/quick-settings controls may show that app instead — open this app to pause or stop it.
- Support Us & Go Ad-Free: Remove ads forever with a one-time purchase about the price of a cup of coffee. Your support keeps the app fast and updated!

For Everyday Use:
Whether mastering a difficult guitar riff, slowing down a choreography track, transposing a song to match your vocal range, turning a vocal cute or transforming it for a completely different vibe, this app is your ultimate practice partner—and playground.

Looking for more HQ sounds?
This app's formant shift is simple and semitone-based, built for speed rather than fine-tuning. For pro-grade offline conversion, detailed formant control, or microtonal formant/pitch adjustments, check out our full-featured app, "Pitch Tempo Changer."

Under the Hood:
Formant shifting runs upstream of Android's standard pitch-shift and time-stretch processing, chained directly into the audio pipeline.

Processing Flow
[Original Audio] → [Formant Shift (Custom)] → [Pitch Shift / Time Stretch (Android Standard)] → [Audio Output]

Formant shifting is typically applied downstream as a final detail pass on voice character. Moving it upstream instead is what makes real-time formant shifting possible here—and it locks in the perceived voice character early in the chain reducing processing load too.

Open Source Licenses & Attributions:
This application incorporates open-source software. Attributions and license details for the libraries used are as follows:
• AndroidX Media3 (including ExoPlayer)
Licensed under the Apache License, Version 2.0 (the "License").
You may obtain a copy of the License at: http://www.apache.org/licenses/LICENSE-2.0
• AndroidX Support Libraries (AppCompat, ConstraintLayout, Activity)
Licensed under the Apache License, Version 2.0.
• Google Material Components
Licensed under the Apache License, Version 2.0.
• JTransforms
Copyright (c) 2007 onward, Piotr Wendykier. All rights reserved.
Licensed under the BSD 2-Clause License.
You may obtain a copy of the License at: https://opensource.org/licenses/BSD-2-Clause
• JLargeArrays
Copyright (C) 2006-2019 University of Warsaw, ICM
Copyright (C) 2020 onward visnow.org
Licensed under the BSD 2-Clause License.
You may obtain a copy of the License at: https://opensource.org/licenses/BSD-2-Clause