Guess the Second

Press Start and Stop to match a target time — train your sense of time with accuracy scoring.

Difficulty:
Rounds:

Target

1.0s

About Guess the Second

Test your internal clock! A target time is shown on screen — press Start to begin the invisible timer, then press Stop when you think the time has passed. Your accuracy is scored in percent with a rank rating. Choose Easy, Medium, or Hard difficulty and play multiple rounds to track your consistency.

How to Use

  1. 1Select a difficulty (Easy, Medium, Hard) and number of rounds.
  2. 2Read the target time shown on the screen.
  3. 3Press the green Start button — the timer runs but is hidden from you.
  4. 4When you feel the target time has elapsed, press the red Stop button.
  5. 5See your accuracy, difference, and rating for each round.
  6. 6After all rounds, review your average accuracy, best round, and final rank.

Frequently Asked Questions

How does the game work?
A target time (e.g. 1.5s) is shown on screen. Press the green Start button — the timer runs invisibly. Press the red Stop button when you think the target time has passed. Your accuracy is the closeness of your stop to the target.
How is accuracy calculated?
Accuracy = 100% minus the percentage difference between your elapsed time and the target. If the target is 1.0s and you stop at 1.1s, that's 10% off = 90% accuracy.
What do the difficulty levels change?
Easy uses round 1s/2s/3s targets. Medium adds half-second targets like 1.5s. Hard uses irregular targets like 0.7s or 1.3s that are harder to estimate intuitively.
What is the highest rank?
Perfect (99–100% accuracy) is the top rank. Below that: Excellent, Great, Good, Average, Keep Going, and Practice.
What is a good score?
Consistently scoring above 90% accuracy is excellent. Most people average around 70–85% on Easy and 60–75% on Hard.