Brain training: attention, memory & reaction tests
Free online brain trainers and tests: the Schulte table, memory check, reaction time test, Stroop test, mental math. Train your brain right in the browser — no sign-up, instant results, records stay on your device.
Attention & focus
Schulte tables, target search among distractors and the Stroop test — speed and stability of attention.
- Schulte table — attention trainerThe classic grid: find the numbers in order against the clock — concentration and visual search speed.
- Attention & focus testFind target symbols among similar ones against the clock — selective and sustained attention.
- Stroop testName the colour, not the written word: the word–colour conflict measures attention flexibility.
Memory
Short-term, visual and working memory — check and train.
- Short-term memory testMemorise digit strings that keep getting longer — your short-term memory span.
- Memory pairs gameFlip cards and match pairs in as few moves as possible — visual memory and strategy.
- N-back — working memory trainerDoes the position match the one N steps back? The classic working-memory workout.
Reaction speed
Average simple reaction time in milliseconds and what counts as typical.
Mental math & thinking
Mental arithmetic fluency — accuracy and speed of calculations in your head.
Memory and focus letting you down? Sometimes the cause is in your labs
B12 and iron deficiency, an underactive thyroid, poor sleep and chronic stress all impair concentration and memory. Upload your labs — AI explains every value and tells you what to check.
Useful articles
What affects attention, memory and reaction speed — body and brain are connected.
The trainers and tests in this section are practice and a reference point, not medical diagnostics. Results depend on fatigue, sleep, stress and even your device, so compare yourself first of all with yourself. If declining memory or attention worries you or your family, discuss it with a doctor.