Test Your Reaction Time & Reflexes
48 free tools to practice reaction time, memory, speed, and aim. Compare your scores across sessions on the same device.
Cognitive Lab Journal
Measure first. Practice short. Read the method.
Reflextry is a free browser lab for reaction time, working memory, speed, and accuracy. Scores are transparent (milliseconds, spans, accuracy)—not clinical diagnoses or invented percentiles. Start with a baseline, train in 10–15 minute sessions, and use our guides when you want the science behind the number.
How we score tests
What milliseconds, spans, and accuracy mean—and what we refuse to claim.
What is a good reaction time?
Realistic ranges, hardware noise, and how to read your own scores.
Choice vs simple reaction
Why more options slow you down, and how to train each separately.
About the lab
Who builds Reflextry, our methodology, and how to contact us.
All guides
Memory, reflex, speed, and accuracy articles from the Cognitive Journal.
FAQ
Training frequency, privacy, scoring, and common product questions.
What Reflextry Measures
Free browser tests for reaction time, working memory, click speed, aim, and accuracy. Measure a baseline, practice in short sessions, and track progress on the statistics page—no account required for core tools.
Reflex Arena
reaction
Click the exact millisecond the screen turns green.
time perception
Estimate the exact duration of a hidden timer.
go no go
Press on green Go trials — withhold on red No-Go.
flanker
Respond to the center arrow; ignore flanking distractors.
choice reaction
Click the lit colored box as fast as you can.
sound
React as fast as possible to a sudden audio cue.
grid
Click the randomly appearing targets instantly.
peripheral
Spot and react to targets outside your direct focus.
direction
Swipe or press the arrow matching the visual cue.
multi stimulus
Process conflicting signals and react correctly.
sequence reaction
Quickly click targets in the specified order.
whack a mole
Smash the targets before they disappear.
color switch
React instantly when the target changes color.
Memory Arena
sequence
Memorize and repeat the expanding pattern of flashes.
chimp test
Recall numbers in exact order after they are hidden.
verbal memory
Identify if you've seen the current word before.
n back
Match letters that appeared N steps earlier in the stream.
object tracking
Keep your eyes locked on the moving targets.
number
How many digits can you hold before your memory drops them?
visual
Remember the exact layout of the highlighted tiles.
color
Memorize and reproduce the exact sequence of colors.
shape
Differentiate and recall complex geometric shapes.
symbol
Remember a growing sequence of abstract symbols.
word recall
Memorize a list of words and recall them later.
card match
Find the matching pairs hidden behind the cards.
Speed Arena
cps
Test your raw clicks-per-second velocity.
schulte table
Click shuffled numbers in order on a Schulte grid.
math
Solve basic arithmetic equations rapidly.
typing
Type the provided text as fast as possible.
word
Unscramble words with extreme speed.
grid
Clear the entire grid of targets quickly.
number rush
Click the numbers in ascending order fast.
quick sort
Categorize items left or right with max speed.
Gaming Arena
aim
Track and click moving targets to improve FPS aim.
rpg
Challenge yourself and improve your skills.
target tracking
Keep your crosshair locked onto evasive targets.
endless dodge
Avoid incoming obstacles for as long as possible.
stroop drop
Overcome cognitive interference under time pressure.
flick shot
Snap your crosshair to targets instantly.
rhythm tap
Hit the notes precisely on the beat.
Accuracy Arena
image
Quickly spot the differences or hidden objects.
color blindness
Identify numbers hidden within Ishihara plates.
mental rotation
Determine if 3D shapes match when rotated.
data
Enter complex alphanumeric sequences flawlessly.
pattern matching
Identify the correct missing piece of the pattern.
precision click
Click tiny targets with pixel-perfect accuracy.
angle estimation
Visually estimate the exact degree of an angle.
color match
Adjust RGB sliders to recreate the target hue.
What is Reflextry?
Reflextry offers 48 free browser games for reaction time, memory, typing, clicking, accuracy, and aim practice. Each test records a score for that task so you can compare your own sessions.
A browser score includes the effects of your screen, input device, browser, and test settings. It is not a direct measurement of biological latency or a clinical assessment.
Make your practice sessions comparable
- Choose the same test, difficulty, and input device each time.
- Read the scoring rules before starting. Milliseconds, accuracy, span length, and words per minute describe different tasks.
- Repeat several trials and compare trends rather than one unusually good score.
- Take a break if you feel tired or uncomfortable.
Read our testing methodology for scoring formulas and hardware limitations. Your personal statistics show your own recorded progress, not population norms.
What a better score means
Practice gains are strongest on trained tasks; broad benefits in everyday cognition are less established. See Simons and colleagues’ review of brain-training research. This research does not validate Reflextry as a medical or intelligence test.
We do not publish a verified global benchmark dataset. Use your own repeated results as a practice baseline. For background and references, visit the science page.
Frequently asked questions
Does brain training actually work?
Practice can improve performance on the task you train. A better game score does not establish improved intelligence, safer driving, or prevention of cognitive decline. Reflextry tests are practice tools, not clinical assessments.
How often should I practice?
Start with a short session that fits your schedule and stop when tired or uncomfortable. Compare the same test and difficulty on the same device. There is no validated Reflextry training dose or guaranteed improvement timeline.
Can I use Reflextry for an esports warmup?
You can use the aim, tracking, and reaction games for a browser-based warmup. Their scores measure performance in these exercises, not your rank or likely performance in another game.
Is Reflextry free?
The tests are free to play in your browser. You can start a test without creating an account.