Otto: Reverse Audio & ASMR
Voice Changer & Whisper Sounds
About
Easily record and reverse any sound, from your voice to music. Participate in viral challenges, create funny backward speech, or experiment with unique audio effects. Save and share your creations instantly.
What's New in Otto
2.1
September 24, 2026
The app is now called Otto, and it does a lot more than reverse. YOUR RECORDING CAN LEAVE AS A VIDEO Render any recording as a vertical video with an animated waveform and your own caption, then save it to Photos or share it. Audio files were never accepted by social apps, so this was the missing piece. TEN NEW VOICE EFFECTS Slowed, Chipmunk, Demon, Whisper, Robot, Phone, Megaphone, Underwater, Glitch and Cave now sit next to Reverse. Record once and try them all on the same take. ASMR BACKGROUNDS Put a soft sound under your voice and set the level yourself. Rain, white noise, keyboard, tapping, brushing, paper crinkle, fireplace, wind and heartbeat. THE BACKWARDS CHALLENGE Read a phrase, hear it backwards, then try to say the backwards version. Otto reverses your attempt and scores how close you got. FREE PLAYBACK IS NO LONGER CUT SHORT You can hear and share your full recording without paying. Pro now covers the watermark and the extra effects and backgrounds.
MoreSubscription plans
Reverse Singing Pro
Get full access to all features
Developer apps
FAQ
What is Reverse Singing?
Reverse Singing is an application that allows you to record audio and play it back in reverse. You can use it for the reverse singing challenge, to say phrases backwards, or for creative sound effects.
Can I use Reverse Singing offline?
The provided data does not specify offline functionality. However, recording and reversing audio typically requires processing power that may or may not be available without an internet connection.
How does the reverse singing challenge work?
The reverse singing challenge involves recording yourself singing a song and then playing it backwards. This app allows you to easily record your singing and then reverse the audio to participate in this trend.
What devices is Reverse Singing available on?
Reverse Singing is available on iPhone and iPod devices. It is compatible with iOS versions suitable for the '4+' age rating.
Does Reverse Singing have ads?
No, Reverse Singing does not contain advertisements. The app is free to download and use, with optional in-app purchases for premium features.
What are the subscription options for Reverse Singing Pro?
Reverse Singing Pro offers several subscription plans: a 7-day free trial followed by $5.99 weekly, $9.99 monthly, or $39.99 annually. These plans likely unlock advanced features or remove limitations.
How often is Reverse Singing updated?
Reverse Singing was last updated on October 19, 2025, with version 1.2 released on September 20, 2025. This indicates a relatively recent update, suggesting ongoing development and support.
What is the age rating for Reverse Singing?
Reverse Singing has an age rating of 4+. This means it is considered suitable for children and general audiences, with no mature content expected.