Knock in Doors app for iPhone and iPad

How many doors can you open?

Try a new, unlike other puzzle!
“Knock in doors” is a unique project that has no analogues and is addictive from the first ... knock!
The game helps to develop a musical ear, sense of rhythm, attentiveness and trains memory. In the form of a game will help develop all the necessary qualities for future artists, musicians and dancers.

- Free access.
- Ability to play without an internet connection.
- Simple control.
- Suitable for both adults and children.
- It weighs a little.
- Play conveniently on any device.
- It has two modes (with sound and vibration mode) that will allow you to play in any situation and under any conditions.
- Does not contain scenes of violence, profanity, does not injure the psyche.