Grid Start
Are you world's 1st owner?
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Five red lights. The instant they go out — tap! Measure your reaction down to 0.001s, climb the world leaderboard, and collect all 31 machines.
■ One rule. That's it.
Five red lights come on, one per second. The instant they all go out — TAP!
A racing-start reflex game that measures your reaction time down to 0.001 seconds.
■ What's your rank?
- Under 0.18s … Pro Driver
- Under 0.23s … Semi-Pro
- Under 0.30s … Amateur Racer
Slower than that? Play and find out.
■ Earn coins in Best of 5
Five runs in a row — your average time decides the reward.
Jump the start (tap before lights out) and you're done. The tension is addictive.
■ Collect all 31 machines
Spend your coins on the gacha and build your garage.
Animals, weather, myths, celestial bodies — 31 machines across rarity tiers.
And one Secret machine nobody talks about. Obtain it and see your number: "Owner #N in the world."
■ World leaderboards
Compete on Game Center with two boards: best single time and best 5-run average.
■ Send a challenge
Share your result card and ask your friends: "Can you beat this time?"
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Kenya Koizumi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kenya Koizumi
- Size
- 4.6 MB
- Category
- Racing
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026 Kenya Koizumi
