Five minutes a day.
A number that moves.
NEURA builds you one short brain training session every morning — twenty tasks, picked for you, never the same twice — and turns it into a single Focus Index you can watch move week over week.
How fast are you, really?
The reaction time test: wait for the signal, then tap. Five rounds, about half a minute, free and with no sign-up — then the median of your rounds, in milliseconds. Pick the plain target, the Formula 1 start lights, or a beep; it is the same measurement of your reflexes either way.
In the app the same drill is Reaction Tap, scored into your Focus Index alongside everything else. Want the classic instead? The Stroop Test is one tap away, and eleven more tests run in the browser.
Reaction Time Test
Tap the pad the moment it lights up. Not before.
Five red lights, one by one. Go the instant they all go out.
Wait for the beep — the pad lights up with it.
Your browser is not letting this page play sound. The pad still lights up on the signal, so the run works — check the tab is not muted, then test the sound again.
READY
0
ms, median
Your median: the slowest round dropped, the middle of the rest. Simple reaction time is how fast you can act on a signal you were already expecting, and published figures for adults usually land somewhere around 200–300 ms — but on a web page your display and input device are inside that number.
Every round was a false start. Wait for the pad to change before tapping, and the run will measure something.
Median — Best —
- Best
- —
- Average
- —
- Valid trials
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When a run ends it is sent — its times, the signal, the input device — so it can be placed among everyone else’s; nothing that identifies you goes with it. Space or Enter works too.
Free in the browser, no sign-up.
Live figures from everyone’s runs: Average reaction time Average Stroop effect
One session a day. Then the number starts to move.
There is nothing to set up and no test to pass first. Your first session is ready the moment you open the app; everything else follows from showing up.
Your first session is ready
Twenty short tasks — series, matrices, analogies, rotation — about five minutes. Every answer nudges the difficulty: too easy and it steps up, too hard and it steps back. The first session is free.
Your Focus Index opens
Three sessions in, NEURA has enough to show a number worth trusting: one Focus Index, a 14-day trend, and a breakdown by the domains you train.
Keep the streak, seal the week
The streak lives on your Home Screen widget and Lock Screen. A weekly leaderboard keeps it a little competitive, and a weekly certificate is yours to share.
An instrument, not a dashboard.
Each screen answers one question. Home: what do I do today and how am I doing. Stats: where is the number going. Train: what else can I work on.
One number, across everything you train.
Every session scores into the domains it touched and rolls up into a single Focus Index. It is a training score — built to show you movement, not to label you.
- Opens after three sessions. NEURA waits until it has enough to show a number worth trusting, then keeps a 14-day trend behind it.
- Not an IQ score, not a diagnosis. It tracks your own attention, recall and speed over time — a trend against yourself, not a comparison to a population.
- The thing you train is the thing that gets measured. Daily sessions, games and practice all feed the same number.
Twenty tasks, from the classic reasoning formats.
The daily session is built from the same task families used on reasoning tests — matrices, series, analogies, mental rotation — generated fresh every time, so you train the skill and not the answer. It is a training session, not an IQ test.
Series
- Number series
- Letter series
- Figure series
Analogies
- Verbal
- Numeric
- Figural
Matrices
- Figural matrix
- Number matrix
Classification
- Odd one out
Spatial
- Mental rotation
- Paper folding
- Cube nets
- Cube counting
- Dice rolls
- Solid turn
Visual search
- Hidden figures
- Hidden trace
- Symbol search
Recall
- Grid recall
- Symbol span
Nineteen games, grouped by what they train.
Beyond the daily session, Train holds a catalog of games and endless practice. Every game targets a named cognitive domain and generates its board fresh — you never replay the same one. Several run right here in the browser, no sign-up.
Processing speed
- Equation Rush
- Symbol Coding
- Math Sprint
Reaction time
Visual recall
- Pair Match
Pattern logic
- Pattern Matrix
- Triple Match
Spatial reasoning
- Spatial Blocks
- Cube Twist
Beyond Focus
- Color Sort
- Switchboard
- Block Nest
- Knowledge decks
- Chess puzzles
Played for the joy of it — and deliberately not scored into your Focus Index.
Change the light, not the room.
NEURA doesn't repaint itself when you switch theme. The canvas stays calm, the action stays black, and only the light in the room changes color. Pick one — this page follows.
Light and dark are peers — switch with the sun/moon in the header, exactly like in the app.
Good to know
How long does a session take?
About five minutes. A daily NEURA session is twenty short reasoning tasks, ready every morning — built to be finished, not started.
What is the Focus Index?
The Focus Index is one training score across the cognitive domains you work — attention, processing speed, working memory, visual recall, pattern logic, fluid intelligence. It opens after your third completed session and keeps a 14-day trend behind it. It is not an IQ score and not a diagnostic or medical measurement: it tracks your own trend, not a comparison to a population.
Is NEURA personalized?
Yes — NEURA personalizes by what you do, not by a questionnaire. Every answer moves the difficulty of the next task, by domain, and no session is ever assembled from the same tasks twice.
What is the difference between the daily session and the games?
The daily session is twenty reasoning tasks and is what the Focus Index is built on. The nineteen games and endless Practice live in Train for extra work on a specific domain — attention, recall, speed, logic — whenever you want more than five minutes. Beyond Focus (Knowledge decks, chess puzzles and three puzzle games) is played for its own sake and is not scored into the index.
Can I try before installing?
Yes. Thirteen cognitive tests — Reaction Time, Stroop, Schulte Table, Flanker, Trail Making, N-Back, Corsi Block, Digit Span, Number Series, Letter Series, Odd One Out, Number Analogy and Verbal Analogy — run right here on the NEURA site, free and without sign-up, with your result shown straight away.
Do brain training apps actually work?
Partly, and less than the category claims. Practice reliably makes you better at what you practice; the evidence that it lifts general intelligence is thin, and the study that made that promise famous — dual n-back training raising fluid reasoning — largely failed to replicate. We sell a brain training app, so we are the last people you should take that on trust from: the N-Back Test on this site lays the whole argument out, against our own interest. What NEURA measures is your own trend on the tasks you actually do, which is a smaller claim and a true one.
How much does it cost?
Your first session is free, no subscription needed. After that, NEURA continues with a Premium subscription — the first 3 days are free — which unlocks the whole app: daily sessions, games, practice and stats. Manage or cancel it any time in your Apple ID settings; your streak and your account are never behind the paywall.
Start with one session.
Five minutes today, a number in three days. Download NEURA and take your first session.