Reverse Your Voice. Share the Reveal.
Up to 10 seconds a take. Your recordings stay in this browser and are never uploaded. XP and coins are not saved here, get the app to keep them.
The reverse singing app: say it backwards, play it forwards
Revocal is a reverse singing and talk backwards app for iPhone and Android. It reverses any phrase so you hear exactly what you have to imitate, drills you until you can say it, then films one take and reverses the whole clip, picture and sound, so you appear to sing the line perfectly.
Go further in the app
Revocal spells out how the backwards version sounds, films video reveals that play forwards, and lets you send a reverse challenge to friends.
How the reverse singing challenge works in Revocal
Three ways to reverse your voice
Reverse singing
Say or sing a line, hear it backwards, learn the backwards version and film it. Revocal stitches the reveal with the words underneath, ready to post.
Reverse video
ReverseVid films you and hands the clip straight back reversed, picture and sound together. Send it and let your friends work out what you said.
Reverse audio
ReverseAU is sound only. Record a line, play it backwards, say the backwards version yourself, then hear yourself come out forwards.
What the reverse singing challenge actually is
The challenge looks like a filter and isn't. You pick a song line, record it and play it backwards. What comes out is nonsense: a string of sounds with no words in it. Your job is to learn to sing that nonsense out loud, convincingly enough that when your recording is reversed, the original line comes back.
That is why the good clips are funny. The first half is someone gurgling at a camera with total commitment. The second half is the same clip backwards, and suddenly they are word-perfect. The joke only lands with both halves, which is why Revocal exports them together. More on the reverse singing challenge.
How to talk backwards
People assume you spell the words in reverse. You don't. English spelling has almost nothing to do with it. You reverse the sounds, and reversed sounds are often ones English never makes. That is the whole difficulty, and it is learnable:
- Start short. Three or four words. A long phrase is not harder in theory and is enormously harder in practice.
- Listen more than you think you need to. Twenty times through the reversed audio before your first attempt is normal.
- Slow it down. At half speed the reversed sounds separate into something you can copy. Speed up once the shape is right.
- Chunk it. Three seconds at a time. Join the chunks last.
- Expect to fail five to ten times. That is the normal success rate for a recognisable result, not a sign you can't do it.
Examples, and why some sounds refuse to reverse cleanly: how to talk backwards, step by step.
Guides
Questions
What is the reverse singing challenge?
You say or sing a line of deliberate nonsense, record it, then play the recording backwards. If you got the nonsense right, the reversed audio comes out as a real sentence. The joke is the gap between the two: the struggle, then the reveal. The full explanation.
How do you talk backwards?
You don't reverse the letters. You reverse the sounds. Take the phrase you want people to hear, play it backwards, and learn to imitate that backwards audio by ear, chunk by chunk, slowed down. Revocal does the reversing and the drilling for you. Step-by-step guide.
How long does it take to learn?
Most people need five to ten attempts on a short phrase before the reversal is recognisable, and it helps to listen to the backwards audio twenty times or more before your first go. It is a skill, not a filter.
What is the difference between reverse singing and playing a song backwards?
Playing a song backwards gives you nonsense. Reverse singing is you performing that nonsense well enough that your own recording, reversed, turns back into the real words.
Does Revocal reverse the video as well as the sound?
Yes. The whole clip reverses together, picture and audio, so the finished video shows you apparently saying the line perfectly.
Can I post it to TikTok, Instagram Reels or YouTube Shorts?
Yes. Revocal makes a vertical video with the words shown on screen and hands it to the iPhone share sheet, so it goes straight to TikTok, Reels, Shorts, WhatsApp or anywhere else you share video.
Is Revocal free?
Yes, Revocal is free to download on iPhone and Android. On the free plan each recording is up to ten seconds, and videos you share carry a small Revocal watermark and end card. Revocal Pro removes the time limit, the watermark and the end card.
Does it work offline?
Revocal has no account and no server of its own. Recording, reversing and saving all happen on your phone.
Is there an Android version?
Yes. Revocal is on Google Play for Android and on the App Store for iPhone.