Quartenson · Cognitive training products
Quartenson creates free browser exercises, mobile training apps, and evidence-informed guides for visual attention, memory, reaction, and focus practice.
01
Choose
Pick a focused exercise.
02
Practise
Repeat the same setup.
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Review
Use results and history as context.
Choose a free cognitive training exercise by goal: use Schulte tables for visual scanning and ordered search, visual search for target detection, visual memory for pattern recall, peripheral awareness practice for off-centre targets, or a reaction time test for response timing. No account is required.
Free Schulte Table Trainer
Find the numbers in order
Focus • Scanning • Speed
Goal: Cleaner 5x5 rounds with fewer mistakes
Practice Schulte tables online with a simple browser grid. Choose 3x3 through 7x7, track time and mistakes, and use pause, shuffle, and keyboard controls for quick focus sessions.
Start Free TrainerVisual Search Test
Find the target among distractors
Speed • Accuracy • Focus
Goal: Faster target spotting with better accuracy
Find one target among similar symbols, letters, or numbers. Complete ten short rounds and track median response time, accuracy, and clean results.
Start Visual Search TestVisual Memory Test
Remember sequences or patterns
Memory • Focus • Levels
Goal: Better visual sequence and pattern recall
Choose ordered sequence or 3-second pattern recall, progress through levels, choose difficulty, track your best level, and compare recent local sessions.
Start Memory TestStory Chain Memory Trainer
Link items into one connected story
Build • Recall • Repair
Goal: Recall a short ordered list through connected links
Build a connected story for 4 to 8 items, hide the list, recall it in order, identify the first broken link, and retest after focused repair.
Start Story Chain TrainerPeg System Memory Trainer
Link numbered pegs to temporary targets
Review • Recall • Repair
Permanent Peg System positions
Goal: Retrieve a short target list by numbered position
Learn 5 or 10 permanent memory pegs, attach a generated or custom list, test positions in random order, repair weak associations, and retest for free.
Start Peg System TrainerChunking Memory Trainer
Group, recall, and reconstruct
Meaningful groups • Exact order • Repair
Meaningful groups
Goal: Recall an ordered list through meaningful groups
Practise 6, 9, or 12 words, digits, or private custom items. Build useful groups, hide the list, reconstruct every position, compare chunks, and repair weak groups.
Start Chunking TrainerPeripheral Awareness Trainer
Notice brief off-centre targets
Awareness • Accuracy • Focus
Goal: Off-center awareness while holding focus
Keep attention near the centre while noticing brief off-centre targets. Complete a dual task and review central, peripheral, and combined accuracy.
Start Awareness ExerciseReaction Time Test
Respond to one visual signal
Median • Fastest • Spread
Goal: Response-speed measurement for one visual signal
Wait for an unpredictable visual signal, then respond as quickly as you can. Choose 1 to 10 trials and review your median, average, fastest time, and false starts.
Test Reaction TimeFor a more useful comparison, repeat the same tool, difficulty, grid size, and input method. Review median time, accuracy, mistakes, and consistency across several sessions instead of treating one fastest score as a complete benchmark.
For longer-term practice
Browser tools help you start quickly. Quartenson: Schulte Tables adds session history, pace patterns, heatmaps, achievements, and weekly review when you want to follow your Schulte-table practice over time.
How we approach practice
Quartenson is designed around repeatable practice and understandable progress - not exaggerated promises from one result.
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Open a free browser exercise and begin without creating an account.
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Keep the mode and setup consistent before interpreting a change.
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Use repeated sessions, medians, consistency, and history as context.
Understand your practice
Read practical explanations before changing your setup or drawing conclusions from one result.
Schulte Table Results
Schulte Table Results
8 minutes to read
See Quartenson’s aggregate 5×5 result data by mode, including the 25th percentile, median, and 75th percentile for matching Classic and Dynamic rounds.
Read article
Visual Memory Practice
Visual Memory Practice
10 minutes to read
Learn how pattern and sequence memory differ, try evidence-informed visual memory exercises, and follow a practical 14-day plan with repeatable progress tracking.
Read article
Schulte Table Progress
Schulte Table Progress
8 minutes to read
Learn how to track Schulte table progress with clean median time, mistakes, consistency spread, personal bests, and recent history instead of relying only on one fastest result.
Read article
