Choose by mechanism
Use the complete directory to filter tools by the action they require, not by a promise of general improvement. Each card opens a working browser task or focus aid with its own settings, metrics, limits, and local-history behavior.
28 tool entries in the current filter.
Find numbers in order on adjustable Schulte grids, then review completion time, errors, mode, and local browser history.
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Answer color-word, reverse, or shape rules and review accuracy, median timing by condition, and the page-defined interference difference.
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Complete a short Go/No-Go attention task and review target responses, misses, false taps, accuracy, and response timing.
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Wait for a visual signal across five rounds, then review average, best response, false starts, and local history.
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Find one target in symbol, letter, or number boards and review completion time, errors, difficulty, and local history.
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Test visual memory by recalling highlighted grid positions, then review accuracy, level, mistakes, and browser-only session history.
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Track several moving targets among identical distractors, adjust speed and target count, and compare accuracy across local sessions.
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Complete a timed vigilance task and review target hits, misses, false alarms, median response time, and response consistency.
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Scan symbol rows, decide whether a target appears, and review correct answers, errors, pace, and response consistency.
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Compare alternating scenes, find the changed detail, and review detection time, accuracy, hints used, and puzzle difficulty.
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Switch between number, color, or shape rules and compare accuracy and median response time on repeat and switch trials.
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Complete two simple tasks separately and together, then compare accuracy, missed events, response time, and dual-task cost.
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Identify two targets in a rapid visual sequence and explore how the spacing between targets changes second-target accuracy.
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Watch an ordered sequence on a 3×3 grid, reproduce it, and review level, attempts, accuracy, and local history.
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Repeat a four-pad color sequence that grows each round and review best length, mistakes, and average input delay.
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Recall digit strings from 3 to 20 digits with adjustable display time, strict matching, spacing, and local best length.
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Run a 1-, 2-, or 3-back position-and-letter task and review hits, misses, false alarms, and task accuracy.
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Complete congruent, incongruent, and neutral Flanker trials, then compare condition accuracy, median response time, and interference.
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Select only filled-circle targets on changing symbol boards and review hits, misses, false clicks, accuracy, and timing.
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Set focus, short-break, long-break, and cycle lengths, run the timer, and keep completed focus blocks in local history.
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Follow box, 4–6, or 3–3 visual breathing cues for one, three, or five minutes with optional sound.
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Open five date-based activities, mark each item manually, and keep the current-day completion state in local browser storage.
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Choose a goal, daily time, and difficulty label to create a seven-day rotation of site tools with local completion checkmarks.
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Use 3×3, 4×4, or 5×5 number grids with optional timer, color, sound, and next-number highlighting.
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Find the unique symbol among similar distractors, adjust grid difficulty, and review completion time, errors, streaks, and categories.
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Compare visual patterns, identify matches or differences, and review accuracy, response time, error types, and difficulty progression.
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Generate white, pink, or brown noise locally in your browser with volume, timer, gentle fade, and no audio upload.
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Review browser-only results across focus tools, compare recent sessions, export data, and clear your local history at any time.
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The full directory is organized by the action each tool requires. A shared “focus” label does not put search, memory, reaction, and timer results on one scale.
Use the cards to narrow the choice, then read the destination page's rule, denominator, local-storage behavior, and interpretation boundary.
Decide whether you want to search, inhibit, react, remember, track, monitor over time, or schedule work, then open the corresponding tool.
Values in the full directory use different denominators. Fix mode, device, and input only after opening one page; do not rank unlike tools.
These questions stay tied to the visible content on this page.