DeckClocker
Card Clocking Speed Trainer
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
The deck clocking trainer. Time your drills, practice the math, get faster.
Master the art of deck clocking with timed practice drills.
Deck clocking is a technique used by card experts to identify a missing card from a deck through rapid mental calculation. DeckClocker helps you develop and sharpen this skill with focused practice sessions.
FEATURES
Timed Drills — Scroll through a spread of cards while a timer tracks your speed. Tap when you've identified the missing card.
Drill Mode — A 60-second speed quiz to practice the mental math. Answer as many as you can before time runs out.
Customizable Settings — Practice with red or black cards, full deck or half, and choose your preferred scroll direction.
Instant Feedback — See your times and verify your answers immediately.
Whether you're learning the technique for the first time or refining your speed, DeckClocker provides the focused practice you need.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Kevin Haggard, 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 Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Kevin Haggard
- Size
- 2.9 MB
- Category
- Entertainment
- Compatibility
Requires iOS 26.2 or later.
- iPhone
Requires iOS 26.2 or later. - Mac
Requires macOS 26.2 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.2 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- ©2026 Kevin Haggard