VOIBACKHow It Works
Pick a Phrase
Choose from the phrase library, or type your own challenge.
Record the Original
Record yourself saying the phrase.
Listen Reversed
The app plays your recording backwards — hear how weird it sounds.
Mimic & Record
Try to imitate the reversed sound and record your attempt.
Flip & Score
The app flips your recording back and compares it with the original for a 0–100 similarity score.
Features
Similarity score — higher is closer
Dual Waveform Comparison
See the original and reversed waveforms side by side.
On-device Similarity Score
Instant 0–100 scoring, computed entirely on your device.
Offline, No Account
The core game works with no internet and no sign-up.
Rich Phrase Library
Six categories of phrases, plus your own custom challenges.
Phrase Categories
- Tongue Twisters
- Onomatopoeia
- Regional Accents
- Exclamations
- Meme Phrases
- Party Lines
- + Custom
Say it backwards
Party Mode
Set the number of players and pass the phone around — VOIBACK tracks everyone's score. The perfect icebreaker for parties, game nights, and road trips. Nail it or butcher it, everyone cracks up.
Find out who can really talk backwards
FAQ
Do I need internet?
The core game works offline; ads, analytics, and optional phrase updates require a connection.
Is it free?
Free with ads, with a one-time purchase to remove them.
Are my recordings uploaded?
No — recordings are processed entirely on your device and never uploaded.
What languages are supported?
Traditional Chinese, Simplified Chinese, English, Japanese, and Korean.
How many players?
Supports multiple players taking turns, great for parties.