Enhance your motor reflexes and hand-eye coordination.

Hand-eye coordination is a fine motor skill that develops in a series of stages from birth.
Strengthen yours by slapping the lock.

Your goal is to stop the moving needle exactly on the bolt.
As you progress through the levels, this will demand greater degrees of precision.

What is the highest level you can reach?
Score high and get on the World Wide Leaderboard for your bragging rights.

From the day we're born to the day we die, our brains continuously revises and remodels, improving or slowly declining, as a function of how we use it. If a brain is exercised properly, anyone can grow intelligence, at any age, and potentially by a lot.

Slappy Lock is your daily brain exercise machine in your pocket to enhance your hand-eye coordination.

Use your hand-eye coordination to continuously improve and challenge yourself and your friends to ultimately sustain or even rejuvenate your brain's accuracy, reliability and motor reflexes.

How To Play:
When you begin there is a big blue ring (the lock) with a small black horizontal line (the needle) and a red dot (the bolt) on it.
Tap anywhere on your screen to start and the black needle begins moving towards the red bolt in a clockwise motion.
The goal is to tap the screen just as the needle hits the bolt.

Sound easy? Try it!

What’s New

Version 1.1

This app has been updated by Apple to display the Apple Watch app icon.

As you make it to higher levels now the game gets even tougher.
Try it - I dare you.

Ratings and Reviews

5.0 out of 5
2 Ratings

2 Ratings

ienjoymurder ,

This is my jam

Two suggestions: make the red ball a flatter red cuz the cones in my eyes get tired against the other flat colors and make it faster as the levels go up! I can take it. I'm #1 on the leaderboard. Check it. I'm there. #1

Developer Response ,

You are #1 and win a bucket of the finest Mountain Dew we have at the studio. Keep rocking it!

App Privacy

The developer, Dulio Denis, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Game Center

    Challenge friends and check leaderboards and achievements.

  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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